This circuit is one of many that the reader can find in this section for testing crystals. The circuit uses an indicator LED. Transistor Q1 determines the maximum crystal frequency that can be tested.
In this simulation we show how to implement a test circuit for BJT transistores. In the simulation we show a...
It actually consists of a tunable field strength meter. The circuit is of an old documentation and the...
This 7 W hybrid circuit with push-pull stage is from the Mullard transistors reference manual from...