Today I had a few minutes and tried a little test by placing a 4 ohm resistor across the output for the variable voltage. Measured the variable voltage setting at 5 volts with a DMM before connecting it to the resistor. I expected to see the analog ammeter read about 1 amp but it didn't move. Then I measured the voltage drop across the resistor and it was less than half a volt.
Looks like I have a problem
I liken this to a weak battery that without load reads a proper voltage but as soon as a load is applied the voltage drops to almost nothing.
I placed a 10 ohm resistor across the outputs of the + 12V output (I haven't made all the changes that Joe suggested, yet) and sure enough the ammeter showed over 1 amp of DC currrent.
Therefore something isn't right with my variable voltage circuit. Capacitors? Voltage regulator? Any help would be appreciated.
