I've got a project that has a 84VDC unregulated power supply on it. I need 12VDC,3A for another part of the project.
Is there a simple way to get 12VDC from that supply ? Regulated ? Like maybe a PWM circuit driving a chopper transistor with a capacitor to smooth out the waveform ? I say regulated because the 84VDC supply is heavily loaded and it droops.