Power supply simulation issue

Thread Starter


Joined Feb 24, 2013
I have been working on a project titled GSM based remote monitoring of energy meter with power factor correction for which i need power supply with +5v, -5v,+12v,-12v
i am using isis proteus for simulation
and i need to use only one transformer
when i simulate a 5v power supply circuit individually output is right
but when i connect a 12v supply circuit with simulation both voltages i.e 5v and 12v comes out to be 3.1 volt
can anybody please look at it and solve?