[sdiy] semi-beginner's op-amp question

[Tim Parkhurst]

> -----Original Message-----
> From: Kevin Lightner [mailto:synthfool at synthfool.com]
> Sent: Monday, April 04, 2005 12:53 PM
> To: synthdiy
> Subject: [sdiy] semi-beginner's op-amp question
> 
> Not to hijack this thread, but I have a small opamp question also.
> 
> What is a good choice for an opamp for driving a long run of wire?
> Dual opamp/single supply desired, but (like many people) could go
> bi-polar or use two.
> Mostly to be used as a DC follower/driver.
> Wire is about 22ga, solid copper, unshielded. Load is basically a
> vactrol: not very picky, but about 30 ma or so, max. Obviously the
> wire adds up to something also in resistance and capacitance, but
> it's overall not a very precision circuit.
> Maybe many opamps would work, but from the general "you probably have
> these in stock" types, what would be best?
> 
> Thanks for any input. :)
> 
> --
> Regards,
> Kevin Lightner
> 

I'll probably get yelled at for this, but my first choice would be the
LM324. Single supply, decent drive capability, cheap and readily available.


Tim (cheap but readily available only on the weekends) Servo

"SQUEAK, squeak, I tell you--SQUEAK!" - Ren (of Ren and Stimpy)

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