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Distortion compensation method for class-D audio amplifier ...
https://www.freepatentsonline.com/9887672.html#:~:text=A%20distortion%20compensation%20method%20for%20a%20class-D%20audio,the%20main%20loop%20of%20the%20class-D%20audio%20amplifier.
Audio Amplifier Feedback - Lead Compensation
https://blog.easychipamp.com/2021/02/audio-amplifier-feedback-lead.html
Textbooks say that the properly placed zero should cancel one of the amplifier's poles. The reality is more complex. First, lead compensation only works when the crossover frequency (where the loop gain become unity) occurs …
Temperature drift compensation for audio power …
https://www.edn.com/temperature-drift-compensation-for-audio-power-amplifiers/
Temperature drift compensation for audio power amplifiers. This article describes a technique to compensate the DC voltage drift in the output of …
Temperature drift compensation for audio power amplifiers ...
https://www.ednasia.com/temperature-drift-compensation-for-audio-power-amplifiers/
This article describes a technique to compensate the DC voltage drift in the output of a directly-coupled AB-Class audio power amplifier. The …
Some Ideas on Temperature Compensation for Audio Amplifier ...
http://hifisonix.com/audio-amplifier-temperature-compensation/
October 27, 2013 · by Bonsai · in Audio Design Library. Temperature compensating an EF3 audio power amplifier output stage is not a trifling task. There are 6 Vbe junctions, running at 3 different current densities, different temperatures and neither is the thermal performance of the heatsink assembly characterized In most DIY cases. This makes deploying a conventional …
Amplifier Compensation. - Angelfire
http://www.angelfire.com/electronic/funwithtubes/Amp-Compensation.html
Step-by-step Amplifier Compensation. Open the negative feedback loop and remove all compensating capacitors. Configure the amplifier as shown in figure 4. Decide how much feedback, in dB, you want to apply to the amplifier. Calculate loop gain AB from, AB = 10^(dB/20) - …
Audio Amplifier Feedback - Lag Compensation
https://blog.easychipamp.com/2021/03/audio-amplifier-feedback-lead-lag.html
The compensation network adds to the loop gain a pole at ω p = 1 ( R N + R I | | R F) C N and a zero at ω z = 1 R N C N; note that ω p < ω z ( green is the forward gain of the amplifier, blue is 1 / B ): The loop gain is reduced by 3dB at ω p and keeps falling until the zero cancels the effect of the pole, including the extra phase lag. The crossover shifts to a lower …
Amplifier Input Compensation - Learn About Electronics
https://www.learnabout-electronics.org/Amplifiers/amplifiers41.php
Providing Inputs for Different Signal Sources. Pre amplifiers are designed to increase the signal voltage amplitude of input devices to a level suitable for the input to a power amplifier. Pre-amplifiers often need a number of different inputs, each with a different gain and/or different input impedance. This is to ensure that each device connected to the various inputs provides …
Discrete audio amplifier project PT16.1 Miller …
https://www.youtube.com/watch?v=3z_wlYXvRIU
As discussed in the previous project video, this amplifier is using what is called Miller compensation to keep it stable. In this video I try different capac...
Basic OpAmp Design and Compensation
https://www.d.umn.edu/~htang/ECE5211_doc_files/ECE5211_files/Chapter6_part1.pdf
6.2 OpAmp compensation Optimal compensation of OpAmps may be one of the most difficult parts of design. Here a systematic approach that may result in near optimal designs are introduced that applies to many other OpAmps. Two most popular approaches are dominant-pole compensation and lead compensation. Chapter 6 Figure 08 A further increase in phase
Miller compensation vs collector shunt compensation | diyAudio
https://www.diyaudio.com/community/threads/miller-compensation-vs-collector-shunt-compensation.332143/
If by loading the VAS you get improved stability, I’d say the amplifier compensation design is sub-optimal in the first place. The important thing is to ensure that at the loop UGF you have c. > 60 degrees of phase margin in a practical amplifier and c. >10 dB gain margin
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