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Search results “Ripple rejection ratio definition”
How to Measure Power Supply Rejection Ratio (PSRR)
 
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A discussion about the methods used to measure the Power Supply Ripple Rejection (PSRR) of a linear regulator.
Views: 15705 Texas Instruments
Power Supply Rejection Ratio (PSRR) Measurements using an Oscilloscope
 
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Learn how to perform Power Supply Rejection Ratio measurements using an oscilloscope to test your power supply's ability to reject various components of frequency on the input of DC-to-DC converters. Learn more! ► http://www.keysight.com/find/scopes-power Click to subscribe! ► http://bit.ly/Scopes_Sub The mixed signal oscilloscope we used: https://keysight.com/find/3000T Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com Check out our blog: http://keysightoscilloscopeblog.com Like our Facebook page: https://www.facebook.com/keysightbench/ Download free 30-day trials of Keysight's design & test software at http://www.keysight.com/find/free_trials
Views: 3128 Keysight Labs
LDO as Ripple Suppressor
 
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If your application requires a supply voltage that is free of ripple and noise, you may want to use an LDO as voltage regulator. But how well can an LDO remove ripple and noise from an input supply rail? This is related to the LDO Power Supply Ripple Rejection (PSRR). Find out about PSRR vs. frequency and practical design tips for using a LDO as a ripple and noise filter in our tutorial video.
Performing Power Supply Rejection Ratio Measurements (PSRR) for Frequency Response Analysis
 
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Learn more about performing power supply rejection ratio measurements (PSRR) for frequency response analysis of a switch mode power supply by using a Keysight X-Series oscilloscope. Visit www.keysight.com/find/scopes-power
Views: 1699 Keysight Labs
FRA How to - Power Supply Rejection Ratio
 
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Use the Cleverscope Frequency Response Analyser to measure the Power Supply Rejection Ratio (PSRR) of a power supply with the CS1070 Power Amplifier. It can manage up to 1A output current over a voltage range of -18V to +30V over a frequency range of DC - 52 MHz. This is sufficient to directly measure many power supplies. If this is not enough, you can inject across a low value series resistor (eg 0.1 ohm). This video shows you how to connect up a CS328A-FRA and CS1070 to measure the PSRR of an LTC3589 over the frequency range 200 Hz - 10 MHz.
Views: 619 Cleverscope
EEVblog #441 - How To Track Down Common Mode Noise
 
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How to detect and hunt down common mode noise on your oscilloscope. With the example of testing the output noise on a linear bench power supply. The aside video for Analog vs Digital Scopes: http://www.youtube.com/watch?v=ImyUB3_n9fw EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 124027 EEVblog
Frequency Response Analysis using Oscilloscopes
 
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Bode gain & phase, power supply control loop response Get the Power Supply Testing Toolkit ► http://bit.ly/2bRwmcW Click to subscribe! ► http://bit.ly/Scopes_Sub Application note: http://bit.ly/ScopesBode Thanks for watching the Keysight Oscilloscopes Webcast Series! Learn more about using digital storage oscilloscopes: http://oscilloscopelearningcenter.com Check out our blog: http://keysightoscilloscopeblog.com Like our Facebook page: https://www.facebook.com/keysightbench/ More about Keysight scopes: http://www.keysight.com/find/scopes Agenda: Power Supply Design Trends 2:08 Output Ripple 3:11 (output noise, PARD, Power Integrity) -common probes used 4:10 -Probing techniques & example measurements 6:39 --10:1 passive probe 7:56 --10:1 passive probe with probe socket 9:06 -Using FFT analysis to measure ripple 10:31 --10:1 vs 1:1 probe 13:29 --Use a Power Rail Probe (N7020A) 14:10 Power Supply Rejection Ration 18:58 (Power Supply Ripple Rejection) -Physical Setup 21:21 -Setting up a PSRR measurement 22:47 -Measuring PSRR 24:40 -Oscilloscope vs Network Analyzer (VNA) 26:08 Control Loop response measurements 27:02 -Power supply transient response analysis 28:02 -DC-DC converter block diagram 28:19 -Typical Loop Gain Measurement 29:40 -Control loop response measurement configuration 31:42 -Control loop response physical test setup 34:00 -Setting up a control loop response measurement on the oscilloscope 34:46 -Control Loop Response (Bode plot) - Gain plot 36:17 -Control Loop Response (Bode plot) - Phase plot 37:47 -Manual phase margin measurement 38:52 -Oscilloscope vs Network Analyzer (VNA) 39:36 Oscilloscope vs Network Analyzer overview 40:30 Review & summary 44:31 Keysight Oscilloscope Portfolio 45:18 Recommended probes for power supply measurements 47:05 Additional Technical Resources 49:13 Live Q&A 50:28 2-Minute Guru playlist: https://www.youtube.com/playlist?list=PLzHyxysSubUkc5nurngzgkd2ZxJsHdJAb Download free 30-day trials of Keysight's design & test software at http://www.keysight.com/find/free_trials
Views: 4082 Keysight Labs
LDO basics: Dropout voltage
 
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Visit the TI LDO homepage to learn more about the TI LDO Portfolio. http://ti.com/ldo This video will go over what an LDO is and discuss the importance of dropout voltage in an LDO. An application will demonstrate the importance of dropout voltage when designing as dropout voltage can affect the desired output of an LDO. The designer must keep the input voltage and dropout voltage in mind when using an LDO. Furthermore, PMOS and NMOS architectures used in LDO's will be covered as this has the most impact to the dropout voltage. The video will also show other variables such as pass element size, temperature, output current, temperature, and output accuracy that all can affect dropout voltage.  Need Help? Visit the support and training tab from the LDO homepage. http://www.ti.com/power-management/linear-regulators-ldo/support-training.html Read the corresponding blog post, LDO Basics: dropout. https://e2e.ti.com/blogs_/b/powerhouse/archive/2017/03/16/ldo-basics-dropout
Views: 3414 Texas Instruments
Cable noise -- differential vs. common-mode signaling
 
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A test performed on a signal cable, purposely placed near an AC noise source (a powered extension cord), comparing differential noise voltage versus common-mode noise voltage. Moral of the story: differential signals are more resistant to interfering noise.
Views: 13483 BTCInstrumentation
LDO Dropout Voltage Explained
 
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LDOs are Low Drop-Out Linear regulators. But what exactly does Low Dropout mean? How well does an LDO regulate the output voltage when the input voltage is very close to the output voltage? Our tutorial video will explain the LDO dropout operation and dropout curves, and gives a practical measurement example of the RT9187 LDO close to dropout operation.
Understanding Common Mode DMM Specifications
 
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Describes DC and AC common mode specifications (DC CMRR, AC CMR) for Keysight's DMMs and shows how they are calculated. For more information on Keysight Digital and Bench multimeter see: http://www.keysight.com/find/34401a http://www.keysight.com/find/34410a http://www.keysight.com/find/34411a
LDO basics: Capacitor vs. capacitance
 
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Visit the TI LDO homepage to learn more about the TI LDO Portfolio. http://ti.com/ldo In order for an LDO to operate normally, you need an output capacitor. A common issue when designing LDOs into an application is selecting the correct output capacitor. In this video, Wilson will explore the different considerations when selecting an output capacitor and how it may affect your LDO. Need Help? Visit the support and training tab from the LDO homepage. http://www.ti.com/power-management/linear-regulators-ldo/support-training.html Read the corresponding blog post, LDO Basics: dropout. https://e2e.ti.com/blogs_/b/powerhouse/archive/2017/03/16/ldo-basics-dropout
Views: 824 Texas Instruments
Power Supply Control Loop Response Measurements using an Oscilloscope
 
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Learn how to perform control loop response measurements (Bode gain and phase plots) to test the stability of closed-loop feedback networks of switch mode power supplies. Learn more! ► http://www.keysight.com/find/scopes-power Click to subscribe! ► http://bit.ly/Scopes_Sub The mixed signal oscilloscope we used: https://keysight.com/find/3000T Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com Check out our blog: http://keysightoscilloscopeblog.com Like our Facebook page: https://www.facebook.com/keysightbench/ Download free 30-day trials of Keysight's design & test software at http://www.keysight.com/find/free_trials
Views: 5352 Keysight Labs
Analysis, Design of a Flyback:Part 11 Common Mode Noise
 
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In this video, I discuss what Common Mode Noise is and how Common Mode is generated. Common Noise is typically a leakage of current to earth ground. I show how the primary MOSFET in a flyback forms a capacitor which contribute to the generation of Common Mode Noise. Questions and comments can be sent to [email protected]
Views: 3533 Robert Bolanos
Drives School (E2) - Common mode explained
 
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Common mode from drives and how to counter measure
Views: 6835 Reidar Berntsen
INA149—Highest Accuracy Diff Amp for High CMV Applications
 
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The INA149 is a precision unity-gain difference amplifier with the industry's highest Common-Mode Rejection Ratio (CMRR) for high input common mode voltage (CMV) applications. With 100dB (typ) CMRR, the INA149 can accurately measure small differential voltages in the presence of common-mode signals up to ±275V. The INA149 inputs are protected from momentary common-mode or differential overvoltage up to 500V making it the ideal solution for high accuracy, high voltage industrial applications.
Views: 1187 Texas Instruments
Lecture -11 IC Voltage Regulator
 
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Lecture Series on Analog ICs by Prof. K.Radhakrishna Rao , Department of Electrical Engineering,I.I.T.Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 42097 nptelhrd
Full wave Rectifier Explained
 
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In this video, the center tapped full wave rectifier and full wave bridge rectifier has been explained. The video also includes a brief discussion about the different Full wave rectifier parameters like Peak Inverse Voltage (PIV), ripple factor, efficiency, Average and RMS voltage etc. By watching this video, you will learn the following topics: 0:20 Introduction to Full-wave Rectifier 2:21 Center tapped full wave rectifier 6:16 Peak Inverse Voltage of Center tapped Full-wave Rectifier 8:04 Full-wave Bridge Rectifier 10:34 Peak Inverse Voltage of Full-wave Bridge Rectifier 12:07 Full wave rectifier with RC filter (Ripple voltage and Ripple factor) What is Full wave rectifier: The full wave rectifier is a very useful circuit for AC to DC conversion and it is designed using the diodes. Unlike the half-wave rectifier, the full wave rectifier gives output during both half cycles. Hence, the average or DC value of the output signal is more than the signal which is rectified using a half-wave rectifier. In this video, the following full wave rectifier circuits have been explained. 1) Center tapped full wave rectifier 2) Full wave bridge rectifier The output of the Full wave rectifier is pulsating DC. The ripple in the output waveform can be reduced using the filter. To remove or reduce the ripple from the output waveform, the RC time constant of the filter circuit should be much larger than the time period of the Full wave rectifier. Parameters of the Full wave rectifier: Average Value: 2Vm / π RMS Value: Vm/√2 Ripple Factor: 0.48 Efficiency: 81.2 % PIV: 2Vm (Center tapped Full-wave Rectifier) PIV: Vm (Full wave Bridge Rectifier) Output Frequency: 2f The link for the other useful videos related to diode: 1) Half-Wave Rectifier: https://youtu.be/Ll0IOk_Ltfc 2) How to solve the diode circuits: https://youtu.be/jkEVGQ2lneI 3) RMS and Average Value: https://youtu.be/qDHsokTcgck This video will be helpful to all students of science and engineering in understanding the Full Wave Rectifier Circuits. #FullWaveRectifier #FullWaveBridgeRectifier #CentertappedFullWaveRectifier Follow me on YouTube: https://www.youtube.com/allaboutelectronics Follow me on Facebook: https://www.facebook.com/ALLABOUTELECRONICS/ Follow me on Instagram: https://www.instagram.com/all_about.electronics/ Music Credit: http://www.bensound.com/
Views: 31639 ALL ABOUT ELECTRONICS
The Quantum Experiment that Broke Reality | Space Time | PBS Digital Studios
 
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The double slit experiment radically changed the way we understand reality. To check out any of the lectures available from The Great Courses Plus go to http://ow.ly/QVaz302duhX and get ready to learn about everything from cooking to calculus. Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g The double slit experiment radically changed the way we understand reality. Find out what the ramifications of this experiment were and how we can use it to better comprehend our universe. Written and hosted by Matt O’Dowd Made by Kornhaber Brown (www.kornhaberbrown.com) Previous Episode https://www.youtube.com/watch?v=eJ2RNBAFLj0 The Planck Length and the Origin of Quantum Mechanics https://www.youtube.com/watch?v=tQSbms5MDvY Veritasium and the Double Slit Experiment https://www.youtube.com/watch?v=GzbKb59my3U Is Quantum Tunneling Faster than Light? https://www.youtube.com/watch?v=-IfmgyXs7z8 Comments by: Jason Blank https://www.youtube.com/watch?v=_NqbRcwWwPw&lc=z13mhf0rcurtybftb23nf3yalruqvx2dm Deisisase https://www.youtube.com/watch?v=_NqbRcwWwPw&lc=z13uifuzxlr3xvc1022ly1jo4uijfjhgj04 Bike Jake https://www.youtube.com/watch?v=_NqbRcwWwPw&lc=z13mcnhbglncgpbc122wgxsabw31xdvqw04 An Imposter https://www.youtube.com/watch?v=_NqbRcwWwPw&lc=z12hyl5z4lvsjdihn04cgbhbsnnivhbgdqw0k
Views: 3575621 PBS Space Time
analog opamp optimization tool
 
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this tool can optimize most kinds of opamp, and achieve better performance than that of human design. this is only beta1 of this tool, more function like optimize noise, settling time, ripple number, psrr, cmrr and so on will add into the coming beta vision. if you have question or suggestion, please feel free to leave command below or email me: [email protected]
Views: 357 Minghua Li
LTspice IV:  Noise Simulations
 
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Tyler Hutchison, Applications Engineer LTspice IV (http://www.linear.com/ltspice) can perform frequency domain noise analysis which takes into account shot, thermal and flicker (1/f) noise. The resulting noise density (in units of volts per square root hertz) can then be plotted to aid in circuit analysis and understanding. This video covers how to setup a .noise simulation in LTspice to view both input and output referred voltage noise and discusses a couple of tricks to learn more about noise contributors.
Views: 28609 LinearTechnology
Lecture -28 Voltage Regulators
 
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Lecture Series on Electronics For Analog Signal Processing part-II by Prof.K.Radhakrishna Rao, Department of Electrical Engineering,IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 9977 nptelhrd
DC Voltage Regulators
 
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Analog Circuits and Systems 1 by Prof. K. Radhakrishna Rao, Prof (Retd), IIT Madras.Texas Instruments, India.For more details on NPTEL visit http://nptel.ac.in
Views: 928 nptelhrd
Passive vs Active Probes for Power Rail Measurements
 
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Does the probe you use really matter? Find out! Click to subscribe! ► http://bit.ly/Scopes_Sub Download the Keysight-exclusive Power Supply Testing Toolkit: http://bit.ly/2faxf00 Discover ways in which specialty probes can help you make better power measurements than general issue passive probes. Difficulties of making power measurements include: 1. Finding a measurement system that has low enough noise to catch the details and true signal from your power supply 2. Removing the DC offset so you can see your signal centered and zoomed in tight on the oscilloscope 3. Finding a probe that doesn’t load the circuit and distort the measurement 4. Having high enough bandwidth that you can observe high frequency switching loads. Learn how to overcome these measurement challenges. The video linked at the end will go into further detail on making power measurements and how these issues are addressed. https://www.youtube.com/watch?v=rVsenI36nRI The digital storage oscilloscope used in this video is an Infiniium S-Series oscilloscope: http://www.keysight.com/en/pcx-x205213/infiniium-s-series-oscilloscopes?cc=US&lc=eng The low-noise active probe used in this video is the N7020A power rail probe: http://www.keysight.com/en/pd-2471132-pn-N7020A/power-rail-probe?cc=US&lc=eng Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com More about Keysight oscilloscopes: http://bit.ly/SCOPES Check out our blog: http://bit.ly/ScopesBlog Like our Facebook page: https://www.facebook.com/keysightbench/
Views: 4052 Keysight Labs
Power Integrity Measurements: Using the N7020A Power Rail Probe
 
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Learn about Keysight's unmatched power integrity solution, the N7020A power rail probe. Click to subscibe! ► http://bit.ly/Scopes_Sub Learn more at www.keysight.com/find/N7020A
Views: 4263 Keysight Labs
Differential And Floating Voltage Measurements With Oscilloscope
 
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Mjerenje diferencijalnog i plivajućeg napona. Ti naponi su prisutni u svim modernim aparatima. Diferencijalni naponi su prisutni kod svih modernih protokola: USB, ADSL, VLDS, CAN i sl. Dok plivajući naponi su ne zaobilazni kod svih mrežnih impulsnih napajanja, inverterskih sklopova, motornih pogona i sl. Da bi zaštitili mjernu opremu, tehničke aparate i vlastiti život potrebno je mjerenje izvoditi sa adekvatnom opremom.
Views: 457 Dioda servis
Alexis Ohanian: "Without Their Permission" | Talks at Google
 
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"In WITHOUT THEIR PERMISSION, Alexis Ohanian shows you how to share your great ideas with an unlimited world online. Ohanian charts a course for you to build a business, or create a following, or just expand your world and those of people you haven't even met. What you'll lean from Ohanian isn't taught in any school or in any modern curricula. It is the knowledge of the future-to create a better world." - Soledad O'Brien, Journalist, CEO, Starfish Media Group "Alexis talking about the internet is like Sid Vicious talking about punk. Analysts merely adopted it, but Ohanian was born in it, molded by it, and is the voice of it. A fascinating story, but more importantly: a crucial insight into the healthy proactive mindset of the tech startup world that will keep defining the future." - Derek Sivers, founder of CD Baby, author of Anything You Want About the Author: In addition to starting Reddit.com, Alexis Ohanian has also been instrumental in other successful online ventures, including HipMunk and BreadPig. He lives in Brooklyn but remains a diehard fan of the Washington Redskins.
Views: 35502 Talks at Google
Comparison of Permanent Magnet Electric Motor Technology
 
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AVID Technology has prepared this in-depth look at electric motor technology used in applications from electric vehicles to robotics and aerospace. More electric powertrains are transforming the automotive industry, from Mild Hybrid systems which typically use use radial flux electric motors to control ancillaries such as pumps, fans and provide some torque assistance and regenerative braking to full electric vehicle drive trains. AVID created this video to explain the key different types of permanent magnet motor and how they differ. More information on our high efficiency EVO axial flux motors can be found here: https://avidtp.com/product/evo-motors/ We look at how radial flux motors work and compare radial flux vs axial flux motors. We also look at internal rotor vs external rotor radial flux motors. More information about our radial flux motors can be found here: https://avidtp.com/product/pm-radial-flux-motors/ Our motors and power electronics can also be used in applications such as collaborative robot actuation systems and propulsion systems for UAV's and other types of aircraft. More information on our award winning electric and hybrid vehicle powertrain systems can be found on our website: https://avidtp.com Don't forget to subscribe and hit like !
Views: 28436 AVID Technology
AFD27 - Common-mode Feedback , examples of Common-mode Detectors.
 
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video lectures from iit professors.... not available in NPTEL..... video Lectures on "Active Filter Design" by Dr.Shanthi Pavan , IIT Madras for more videos .... www.satishkashyap.com for free ebooks.....www.ebook29.blogspot.com Lecture 1 - Course overview and introduction. Lecture 2 - The Butterworth approximation Lecture 3 - The Chebyshev approximation Lecture 4 - The Chebyshev approximation (contd) Lecture 5 - The Chebyshev approximation (contd), the Inverse Chebyshev approximation Lecture 6 - The Inverse Chebyshev approximation (contd). Lecture 7 - Synthesis of doubly terminated all-pole LC ladders filters Lecture 8 - Synthesis of doubly terminated LC ladders (contd). Lecture 9 - Synthesis of doubly terminated LC ladders with finite zeros of transmission. Lecture 10 - Network sensitivity - low sensitivity of doubly terminated ladders Lecture 11 - Introduction to frequency transformations. Lecture 12 - Frequency (reactance) transformations (contd) - properties of the driving impedance of lossless LC networks- Tellegen's theorem and positive real functions. Lecture 13 - Driving point impedance of LC networks (contd), Low Pass-to-Low Pass, Low Pass-to-Band Pass, Low Pass-to-High Pass and Low Pass-to-Band Stop transformations Lecture 14 - The Richard's Transformation, RC-CR transformation Lecture 15 - Emulation of an inductor with a capacitor and controlled sources, the gyrator, a second order transconductor capacitor filter. Lecture 16 - Cascade of biquads realization of high order low pass filters, equivalence of the parallel RLC and series RLC circuits with their Gm-C counterparts. Lecture 17 - The idea of Dynamic Range in active filters - impedance scaling and its effect on dynamic range Lecture 18 - Introduction to noise in electrical networks. Lecture 19 - Introduction to noise in electrical networks (contd), the idea of node scaling. Lecture 20 - Dynamic range scaling in active filters. Lecture 21 - Biquad Ordering. Lecture 22 - Active Ladder Emulation / Leapfrog Filters, Effect of Transconductor nonidelaities (parasitic capacitance/output resistance). Lecture 23 - Effect of Transconductor Nonidealities (contd) - parasitic poles. Lecture 24 - Viewing the Gm-C biquad as a Double Integrator Loop, Revisiting the Effect of Finite Gain of the Transconductors. Lecture 25 - Single-ended Versus Differential Filters, Introducing the Differential-pair Based Fully Differential Transconductor, the Need for Common-mode Feedback Lecture 26 - Common-mode Feedback (continued). Lecture 27 - Common-mode Feedback (continued), examples of Common-mode Detectors. Lecture 28 - Stability of the Common-mode Feedback Loop Lecture 29 - Common-mode Positive Feedback in Gyrators. Lecture 30 - Common-mode Positive Feedback in Gyrators (contd), Noise in the Differential Pair. Lecture 31 - Noise in the Differential Pair (contd), Linearity of the Differential Pair, Cascoding to Improve Output Impedance Lecture 32 - Noise in Cascodes, Layout Considerations and Multi-finger Transistors. Lecture 33 - Linearizing the Differential Pair, Resistive Degeneration. Lecture 34 - Noise in Degenerated Transconductors, The Folded Cascode and Noise Analysis Lecture 35 - Stabilizing filter bandwidth over process and temperature - the resistor servo loop, master-slave loops. Lecture 36 - Turning the filter into a VCO to estimate center frequency, example of a practical precision fixed-gm bias circuit. Lecture 37 - Introduction to accurate measurement and characterization techniques for active filters. Lecture 38 - Introduction to Active-RC filters. Lecture 39 - Active-RC filters (contd), the use of an OTA instead of an opamp, swing and noise considerations, single stage OTAs Lecture 40 - Multistage OTAs for use in CMOS Active-RC filters. Lecture 41 - The Miller compensated opamp in active-RC filters, noise considerations, noise in active-RC filters . Lecture 42 - Distortion and Intermodulation in filters, miscellaneous discussion on fixed gm-bias circuits
Views: 3071 Satish Kashyap
Common mode noise.
 
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Eliminating common mode noise at my radio station.
Views: 109 Jaan Jurgenson
Passive Electronic Devices for Analog Signal Processing
 
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Analog Circuits and Systems 1 by Prof. K. Radhakrishna Rao, Prof (Retd), IIT Madras.Texas Instruments, India.For more details on NPTEL visit http://nptel.ac.in
Views: 1012 nptelhrd
Phase-locked loop
 
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A phase-locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is related to the phase of an input signal. While there are several differing types, it is easy to initially visualize as an electronic circuit consisting of a variable frequency oscillator and a phase detector. The oscillator generates a periodic signal. The phase detector compares the phase of that signal with the phase of the input periodic signal and adjusts the oscillator to keep the phases matched. Bringing the output signal back toward the input signal for comparison is called a feedback loop since the output is 'fed back' toward the input forming a loop. Keeping the input and output phase in lock step also implies keeping the input and output frequencies the same. Consequently, in addition to synchronizing signals, a phase-locked loop can track an input frequency, or it can generate a frequency that is a multiple of the input frequency. These properties are used for computer clock synchronization, demodulation, and frequency synthesis, respectively. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 2505 Audiopedia
Ripple (electrical)
 
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The most common meaning of ripple in electrical science is the small unwanted residual periodic variation of the direct current (dc) output of a power supply which has been derived from an alternating current (ac) source. This ripple is due to incomplete suppression of the alternating waveform within the power supply. As well as this time-varying phenomenon, there is a frequency domain ripple that arises in some classes of filter and other signal processing networks. In this case the periodic variation is a variation in the insertion loss of the network against increasing frequency. The variation may not be strictly linearly periodic. In this meaning also, ripple is usually to be considered an unwanted effect, its existence being a compromise between the amount of ripple and other design parameters. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 542 Audiopedia
Disaster Preparedness: Public Health Infrastructure and Perspectives on Community Resilience
 
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Mid-Atlantic Public Health Training Center - October 16, 2013. Presenters: Randolph Rowel, PhD, Chair and Associate Professor, Department of Behavioral Health Sciences, Morgan State University School of Community Health and Policy; and Daniel J. Barnett, MD, MPH, Assistant Professor Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health.
USDA ReConnect Program - Application Walkthrough on Financials
 
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Financial section walkthrough on the ReConnect Application Portal. Originally recorded on April 30, 2019. More information is available at https://reconnect.usda.gov USDA is an equal opportunity provider, employer, and lender.
How to Design for Power Integrity: Selecting a VRM
 
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To download the project files referred to in this video visit: http://www.keysight.com/find/eesof-how-to-vrm For more information about Picotest visit: https://www.picotest.com Many signal and power integrity issues are the result of poor VRM selection. This critical selection is often made arbitrarily due to insufficient, incomplete or incorrect data. Costly design time and multiple board spins can be minimized by following a few simple guidelines and performing a few simple simulations and measurements early in the process. This video explains why one should avoid Voltage mode VRMs and shunt compensation for the VRM Error Amplifier. The better performance of a current mode VRM with series compensation for the Error Amplifier is clearly demonstrated with simulations and measurements.
Views: 9699 Keysight EEsof EDA
Tom Standage: "Writing on the Wall: Social Media - The First 2,000 Years" | Talks at Google
 
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Tom Standage is The Economist's digital editor; his latest book, Writing on the Wall, is out this month and describes the history of social media from the Romans to the Internet. For more details, see http://tomstandage.wordpress.com/books/writing-on-the-wall/
Views: 11554 Talks at Google
PSYCHOPATHY - WikiVidi Documentary
 
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Psychopathy, sometimes considered synonymous with sociopathy, is traditionally defined as a personality disorder characterized by persistent antisocial behavior, impaired empathy and remorse, and bold, disinhibited, egotistical traits. Different conceptions of psychopathy have been used throughout history. These conceptions are only partly overlapping and may sometimes be contradictory. Hervey M. Cleckley, an American psychiatrist, influenced the initial diagnostic criteria for antisocial personality reaction/disturbance in the Diagnostic and Statistical Manual of Mental Disorders , as did American psychologist George E. Partridge. The DSM and International Classification of Diseases subsequently introduced the diagnoses of antisocial personality disorder and dissocial personality disorder respectively, stating that these diagnoses have been referred to as psychopathy or sociopathy. The creation of ASPD and DPD was driven by the fact that many of the classic traits of psychopathy w... http://www.wikividi.com ____________________________________ Shortcuts to chapters: 00:02:19: Conceptions 00:03:18: Measurement 00:05:01: Personality dimensions 00:06:34: Criticism of current conceptions 00:07:28: Signs and symptoms 00:08:31: Criminality 00:11:05: Violence 00:16:09: Other offending 00:17:47: Childhood and adolescent precursors 00:19:41: Conduct disorder 00:22:42: Cognition 00:25:08: Emotion recognition and empathy 00:26:38: Moral judgment 00:28:20: Cause 00:29:00: Genetic 00:29:52: Environment 00:30:52: Brain injury 00:32:37: Evolutionary explanations 00:35:00: Psychological 00:36:23: Neurological 00:40:51: Biochemical 00:45:13: Psychopathic Personality Inventory 00:46:27: DSM and ICD 00:47:52: Other tools 00:48:40: Comorbidity 00:50:20: Clinical 00:54:21: Legal 00:56:18: United Kingdom 00:59:22: Prognosis 01:00:39: Frequency 01:02:06: In the workplace 01:05:25: In fiction 01:07:34: Etymology 01:09:50: Sociopathy 01:11:44: Precursors ____________________________________ Copyright WikiVidi. Licensed under Creative Commons. Wikipedia link: https://en.wikipedia.org/wiki/Psychopathy
Counterculture of the 1960s | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Counterculture_of_the_1960s 00:03:07 1 Background 00:03:16 1.1 Post-war geopolitics 00:05:42 1.2 Social issues and calls to action 00:08:26 1.3 Emergent media 00:08:35 1.3.1 Television 00:09:37 1.3.2 New cinema 00:10:40 1.3.3 New radio 00:11:08 1.4 Changing lifestyles 00:13:58 1.4.1 Emergent middle-class drug culture 00:15:08 1.5 Law enforcement 00:16:41 1.6 Vietnam War 00:17:32 1.7 In Western Europe 00:20:05 1.8 In Eastern Europe 00:22:59 1.9 In Australia 00:23:53 1.10 In Latin America 00:26:36 2 Movements 00:26:45 2.1 Civil Rights Movement 00:27:24 2.2 Free Speech 00:28:13 2.3 New Left 00:33:24 2.4 Anti-war 00:34:45 2.5 Anti-nuclear 00:36:30 2.6 Feminism 00:37:49 2.7 Free school movement 00:37:59 2.8 Environmentalism 00:40:12 2.9 Producerist 00:41:17 2.10 Gay liberation 00:42:05 3 Culture and lifestyles 00:42:15 3.1 Hippies 00:46:03 3.2 Marijuana, LSD, and other recreational drugs 00:48:18 3.2.1 Psychedelic research and experimentation 00:52:06 3.2.2 Ken Kesey and the Merry Pranksters 00:54:15 3.2.3 Other psychedelics 00:54:57 3.3 Sexual revolution 00:55:50 3.4 Alternative media 00:56:35 3.5 Alternative disc sports (Frisbee) 00:57:26 3.6 Avant-garde art and anti-art 01:01:33 3.7 Music 01:14:45 3.8 Film 01:20:58 3.9 Technology 01:21:53 3.10 Religion, spirituality and the occult 01:27:17 4 Criticism and legacy 01:37:27 5 Key figures 01:38:43 6 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services/invoke/uid/0000001a130b3f91 Other Wikipedia audio articles at: https://www.youtube.com/results?search_query=wikipedia+tts Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts Speaking Rate: 0.8561133717150213 Voice name: en-US-Wavenet-B "I cannot teach anybody anything, I can only make them think." - Socrates SUMMARY ======= The counterculture of the 1960s was an anti-establishment cultural phenomenon that developed throughout much of the Western world between the mid-1960s and the mid-1970s. The aggregate movement gained momentum as the Civil Rights Movement continued to grow, and would later become revolutionary with the expansion of the US government's extensive military intervention in Vietnam. As the 1960s progressed, widespread social tensions also developed concerning other issues, and tended to flow along generational lines regarding human sexuality, women's rights, traditional modes of authority, experimentation with psychoactive drugs, and differing interpretations of the American Dream. Many key movements related to these issues were born or advanced within the counterculture of the 1960s.As the era unfolded, new cultural forms and a dynamic subculture which celebrated experimentation, modern incarnations of Bohemianism, and the rise of the hippie and other alternative lifestyles, emerged. This embracing of creativity is particularly notable in the works of British Invasion bands such as the Beatles, and filmmakers whose works became far less restricted by censorship. In addition to the trendsetting Beatles, many other creative artists, authors, and thinkers, within and across many disciplines, helped define the counterculture movement. Several factors distinguished the counterculture of the 1960s from the anti-authoritarian movements of previous eras. The post-World War II "baby boom" generated an unprecedented number of potentially disaffected young people as prospective participants in a rethinking of the direction of the United States and other democratic societies. Post-war affluence allowed many of the counterculture generation to move beyond a focus on the provision of the material necessities of life that had preoccupied their Depression-era parents. The era was also notable in that a significant portion of the array of behaviors and "causes" within the larger movement were quickly assimilated within mainstream society, particularly in the US, even though counterculture participants numbered in the clear minority within their respective national populations.The counterculture era essentially commenced in earnest with the assassination of John F. Kennedy in November 1963. It became absorbed into the popular culture with the termination of US ...
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