Many thanks for your help. I now have my BK 1745 DC Power supply nearly working. My problem now is that when I try to adjust the voltage below 5 volts the voltage gradually drops to zero unless I add a load across the output posts. It seems like a capacitor is holding a charge. Is this normal? I have attached a schematic for a 1746 which is almost the same (only schematic I could find).
Any input would be greatly appreciated.
Thank you in advance,
Chuck