We found this precision circuit in a manual from the 80's. The operational amplifier is of a common type at the time, and equivalents can be tested. Transistors are general purpose types.
This is a single IC voltage regulator that can acts in the range from 1.2 to 20 V. Output currewnt is up to...
This circuit is from a Hughes documentation from 1968. The components are of the time and the RC...
Found in Electronics now from the 90s, this circuit uses a sensor from the time, which is...