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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: use also a 627 to replace the 5534? posted by ericpeters on April 3, 2002 at 13:28:10:
I didn't quite understand what is the compensation cap. There is a signal carryng (signal coupling) cap, and compensation circuit for op-amp's offset voltage usually don't use a cap (essentialy it is a potentiometer, sometimes includes resistors in series).Removal of signal coupling caps is possible just if DC offset is significantly close or equal to zero. But, because one coupling cap is enough for one connection, if your power amp has a coupling cap on input, you can safely remove cap on preamp's output. Generaly speaking, even the best caps are a relatively bad components (very unwelcome), but the fact they are necessary can not be simply ignored. In that case you'll rather get more troubles instead of solving them. If you're searching for output cap, one end of it is connected to the output of the preamp (presumably through the resistor).
See page 9 of OPA627's datasheet for information about offset voltage adjustement. Datasheets of most op-amps has such info.
Pedja
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Follow Ups
- Re: use also a 627 to replace the 5534? - Pedja R 15:38:15 04/03/02 (3)
- Re: use also a 627 to replace the 5534? - ericpeters 16:23:58 04/03/02 (2)
- Re: use also a 627 to replace the 5534? - Pedja R 18:10:45 04/03/02 (1)
- Re: use also a 627 to replace the 5534? - ericpeters 00:00:56 04/04/02 (0)
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