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Article #11585

Re: 0to24v to -12to+12v c

#11585
From: Cyberman
Date: Wed, 11 Nov 1992 02:13
24 lines
1546 bytes
   Seaney@engr.wisc.edu was espousing about '0to24v to -12to+12v conve',
   on [11-05-92  20:19] to All!
 Se> I'm in a bind.  The gradstudents before me goofed an purchased a 0 to
 Se> 24 Volt Power Supply (15Amps) to drive a Power OpAmp.  After close
 Se> inspection it became apparent the the OpAMp needs -12to+12V.  Since the
 Se> OpAmp drives a motor we need as much current as possible.

    Uh they didn't goof.  You see +-12v is no different to the
    motor as is 24 volts.  You need to make a virtual ground
    however.  If you don't need reversability there shouldn't be
    a problem.  Another easy solution is 2 0-24v supplies.  Be
    sure the power suppies can SINK current! :)

 Se> Is there a cheap way to convert 0 to 24 Volts (Floating) to -/+ 24
 Se> Volts.  The hard part seems to be the 15 Amp current requirement.

    Ussually is when you get above 10amps.  You could make your
    own :)

        Cyberman
... Life happens between 9am a 5pm for most poeple, no wonder there bored!
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From: cyberman@toz.buffalo.ny.us (Cyberman)
Newsgroups: sci.electronics
Subject: Re: 0to24v to -12to+12v c
Message-ID: <gate.kPy2TB1w165w@toz.buffalo.ny.us>
Date: 11 Nov 92 02:13:43 GMT
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