This continuity test was found in a 90s Electronic Engineering. Transistors are types of general use of the time with equivalents such as BC548 and BC558.
This circuit, which can be used safely, has been obtained in a 1987 documentation. It consists of a...
Suggested by Fairchild in a 1980s publication, this multiplier uses operational amplifiers from that...
We found this circuit in an old 1980s documentation. The circuit can be implemented with modern...