This circuit was found in an ancient American documentation. The power supply is not given, but we have the voltages used. The relay is sensitive type for high voltage.
This circuit for a simple alarm system was suggested in an article in Electronics Now magazine. The...
This circuit checks the oscillation capacity of a transistor. The circuit can be used with fixed...
This oscillator that operates at 80 kHz was found in the July 1993 issue of Electronics Now...