This is the circuit of a power supply supplied in a kit at the time. The circuit is in the September 1974 Radio Electronics magazine.
Found in an old Electronic Design, this circuit provides an output voltage that is the absolute...
Other operational amplifiers can be used in this circuit obtained from the manufacturer's own...
Frequency in this oscillator is controlled by a crystal. Any 1 MHz to 15 MHz can be used. The JFET can...