This circuit shows how to add a 1st regulator to a source that already has a step for this purpose. The circuit was found in an American power supply documentation.
The two amplifiers are practically the same, except for the gain. They have the following...
This simple two-transistor FM transmitter was found in the November 1991 issue of Radio...
We can assemble this circuit from a 1988 publication using more modern transistors. Thus, for Q1...