This circuit is from a 1968 Electronic Design. The characteristics of the output transformer are not given and the transistors are of the time. The circuit provides a power of a few watts.
This simple injector circuit can actually be powered by voltages from 3 to 9 V. The frequency is...
This common metronome configuration has already appeared in several of our articles and projects. This...
The purpose of this 1-transistor amplifier is to allow the use of a milliammeter in an application...