This circuit was found in an American documentation from the 80's. The components are from that time. It provides a variable output of 18 to 30 V with a current of 200 mA.
This circuit was found in an 1888 publication. However, since it uses common components, it can...
The input impedance of this circuit is about 700 k ohm and the output impedance is about 1 k ohm....
This circuit appeared in the 1991 Electronics Experimenter Handbook. The circuit is for remote...