Audio Amp Dc Servo

Website of Wayne Stegall - Simple DC Servos

http://waynestegall.com/audio/simpledcservos.htm

Servo Design Procedure Choose break frequency of 159.155mHz for even 1sec time constant. Choose LF411 operational amplifier. Want first stage of servo at 0V DC bias to drive C 2S of second stage to -7.5V V GS = V T + sqrt(I D /k n) = -402.516mV + sqrt(2.01944mA/37.8643mA/V 2) = -171.575mV I RS = 2 x I D = 4.03889mA Calculate R terminated to -7.5V:

What is a servo? - Universal Audio | Audio Interfaces

https://www.uaudio.com/webzine/2006/december/text/content2.html

Chapter 23 The Design of DC Servos - Audio Power …

https://www.oreilly.com/library/view/audio-power-amplifier/9780240526133/032_9780240526140_chapter23.html

Amazon.com: LM3886 DC servo amplifier board full ...

https://www.amazon.com/LM3886-servo-amplifier-independent-pre-finished/dp/B075M6W315

Please explain a servo circuit - diyAudio

https://www.diyaudio.com/community/threads/please-explain-a-servo-circuit.103703/

DC offset is affected by a few things. if you hook the opamp up with input shorted, you'll get some baseline offset. using feedback you can reduce this. a servo uses an opamp in the feedback path of another amplifier to increase the DC gain of the feedback loop to force this error closer to a zero. P ppcblaster Member 2006-07-22 2:55 am

Audio Power Amplifier.

https://www.lcaudio.com/pdfs/xpcookbook.pdf

board. A selectable DC Servo kepps DC error within 5 mV, and an effective short circuit protection keeps Your amp alive, even under extreme overloads. A BIAS system where any thermal load is within limits to a supply voltage of +/- 100V ensures long operational life in any application. Millennium is also stable with low supply