This is the power supply circuit for the amplifier in the previous circuit. The source is adjustable and uses power transistors of the time. The AC transistor must be mounted on a heat sink.
This is a shunt circuit to be used on a multimeter, expanding its scales to measure high currents....
This circuit from an old documentation includes the power supply for the 117 V power grid. It can be...
Although MOSFETs of the type indicated are not very easy to obtain, one can have the circuit as a...