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:


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:


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

 

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.

 

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.

Hmm true it's a current issue, I tried lowering the inductances to get lower current but couldn't get the right value

 

You have Vcc, not -Vcc, as the negative supply to U7

 

You have Vcc, not -Vcc, as the negative supply to U7

Actually it's inverted, so -VCC is on top