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Chip Amps Amplifiers based on integrated circuits

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Old 5th October 2006, 12:05 AM   #1
diyAudio Member
 
Join Date: Oct 2004
Location: The high-five state
Default Newb question

I was reading this thread: BPA300 mono block finished and measured

I can't seem to find much information to satisfy my curiosity about what a DC servo is in an amplifier.
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Old 6th October 2006, 04:50 PM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi,
I am about to stir up a hornets nest.
The chipamp section are a lot of wallies.
If you want real information restrict most of your searches to solid state. That's where most of the knowledge lies.

Wait for it!

BTW.
a DC servo tries to cancel the output offset by measuring the DC on the output and applying a cancelation voltage to the input to minimise the output offset.
If components and values are selected well, the remaining offset can be held to less than 1mV for most conditions.
__________________
regards Andrew T.
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Old 6th October 2006, 05:03 PM   #3
diyAudio Member
 
Join Date: Jul 2006
Default What is a "wallie" ?

I have great respect for the forum members and how they help

each other. I do wish an experienced member could start a "New

to DIY section" to help welcome the inexperienced into the world

of DIY by answering questions, designing circuits as they do for

their peers, instead of being told; as they say

"Don't go away mad, just go away"
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Old 6th October 2006, 05:31 PM   #4
diyAudio Member
 
Join Date: Oct 2004
Location: The high-five state
Thanks for the replies. Now I need to find some examples to get my head around the practical application of it.
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