Found in old American documentation, this circuit can use crystals between 27.5 and 33 MHz operating on the third harmonic. The transistor admits equivalent.
With this circuit it is possible to have a symmetrical source from a simple source with voltages from...
The basic idea of the circuit shown in the figure is to increase the brightness of an ordinary...
This regulator can use BD'136 as the main transistor and as a reference next to a BC548 zener. The...