0.1v to 50v variable power supply 30v shema regulated 2ma constant trimming masy zasilaczu doesnt variable psu resistor suggestion elektroda qsl Power supply circuit diagram dc 30v 3a adjustable laboratory variable 2a current voltage 12v eleccircuit transformer output protection figure transistor
0.1V to 50V Variable Power Supply
0-30v 2ma
Operational amplifier
30v regulated 2ma limiting .
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