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.
Found in Harris' 90s documentation, this circuit uses a zener as a stabilizer. The signals...
The circuit presented is based on the National Semiconductor's LM3524, a component not common...
This circuit is from a 1970 General Electric documentation. It can be found with variations on this...