dual +-12V source not outputting correct voltage when added to circuit

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nadirEatsKoukies

Joined Dec 11, 2020
17
Hi guys,

I'm trying to design a power supply circuit that outputs 12V and -12V. I works very well on its own as you can see:
1612783027795.png

But when I incorporate the rest of the circuit, which it is supposed to supply, the voltage VCC goes down to 9.8V and the -VCC goes to -4V:
1612782979944.png

Not sure why it is behaving this way, any input is welcome, thanks :)
 

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AlbertHall

Joined Jun 4, 2014
11,309
Use the simulation to measure the supply currents from each 12V supply.
I don't know how well LTspice will simulate the op-amp supply current.
 
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