This step of good gain was obtained in an American publication of the 1980s. The circuit can be powered by voltages from 3 to 9 V and the FET can be of almost any type.
In a voltage follower, the gain is unitary, and the input impedance is very high. The output...
This circuit can control two loads and is also equipped with a light sensor for its trip. The...
This inverter amplifier is from a 1992 publication. NPN transistors can be BC548 and PNP BC558....