[sdiy] Op Amp LED driver / Current Source problem/solution

Tim Ressel timr at circuitabbey.com
Thu Apr 2 20:36:08 CEST 2015


 Ack!  The link to the original schematic seems to have went away. Does anyone have a copy of the bipolar version they can send me?  Thanks!

Tim Ressel
Circuit Abbey
503-750-9331
timr at circuitabbey.com




________________________________
From: Justin Owen <juzowen at gmail.com>
To: SDIY List <synth-diy at dropmix.xs4all.nl> 
Sent: Wednesday, November 26, 2014 11:09 AM
Subject: Re: [sdiy] Op Amp LED driver / Current Source problem/solution


-----Original Message-----
From: Needham, Alan [Alan.Needham at centrica.com]

> Can you confirm that the op amp has +/- supplies here.

Yes the op amps are supplied by +/-12V. The input signal I'm working with on the circuit in question <http://www.sdiy.org/juz/unipolar_LED.png> will only be receiving a signal in the range of 0 to +5V - so it doesn't need to deal with negative inputs.

- J 

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