Found in the July 1994 Electronics Now magazine, this circuit drives a relay up to 12 V depending on the power supply. The transistor can be general purpose.
This traditional unijunction transistor configuration was found in a 1980s documentation. The functions are...
Found in a 1964 Electronic Design, this circuit uses transistors from that time. Equivalent...
Operating in the FM range, this is one of the many versions of FM transmitter that the reader can...