Without regulation, this basic circuit has the output current, and voltage determined by the transformer. The input can be 110 V and 220 V if the transformer used is of the indicated type.
Found in American documentation from the 90's, this circuit consists of a solid state relay with...
In a voltage follower, the voltage gain is unitary, the input impedance is very high, and the...
Found in an English Maplin magazine in 1983, this circuit has an RIAA equalization. We suggest its...