slightly OT, need some electronic circuit help

Ryan Byrd ryanbyrd at gmail.com
Sun Oct 7 19:47:00 MDT 2012


>Any ideas on how to get negative volts?  I have only one power source...
12V positive.  

Just add another 12v DC power supply and you're good to go. Most op amps have a wide input operating voltages.
See: http://www.sciencelobby.com/operational-amplifier/opamp-dual-power-supplies.html


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