(Hint: more is better.) And then it’s off to build. The end result is a very simple unregulated power supply — just a diode bridge with some capacitors on the output — but by using really ...

A standard transformer, bridge rectifier and large capacitor produces an unregulated supply of about 14 volts. This is taken through a power transistor whose base is driven by the 723 output ...

#Circuit Operation: The unregulated power supply is connected to the series combination of ... Hence the output of the operational amplifier is zero and transistor T1 remains off. The relay, which is ...