[sdiy] Bi-colour LED

[Rob Keeble]

Hi,
I have found some rather nice blue/red bi-colour LED's (3 lead common
cathode) which I'd like to use for monitoring CV/signal amplitude in my
Modular synth. Red for + and blue for - voltages. Any ideas on how I can use
an Op Amp to drive these LED's, all the circuits I have seen are single LED
or 2 lead bi-colour.

Many Thanks for any ideas on or off list...
Rob
www.emulatorarchive.com