This news group business is a hard path to tread what with cranky australians and americans with money and magical Radio Shacks that have just what you want. Most of the replies were courteous and may have been helpful if I were into design My existing power supply I made over fourty years ago with some ca130 op amps and a 3055. I did not design the circuit [it came from radio and hobbies or electronics australia or some such magazine] I wound the transformer myself on c laminations [I had access to a winding shop then]. I etched the circuit board myself made my own case out of sheet steel Calibrated my own meter face.Only paid for components. It was 0-20 V and 0-2.5 A [you could choose volts or amps to control] I have lost this circuit and this power supply is starting to become unstable so I thought now would be the time to make something beefier. As you can gather I like making things myself from scratch Perhaps I was silly thinking newsgroups might be where I might find some clues to a suitable circuit
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15 years ago