Found in a 1968 EEE, this circuit uses transistors from that time. The output is 300 ns. Transistors can be replaced with modern equivalents.
This two-channel bargraph meter uses a single KAA2281 integrated circuit. Found in the January 1991...
This circuit generates a signal corresponding to the harmonic of the crystal used. The frequency is...
The circuit shown makes it possible to power CD-players, tape players and other devices that use 2...