When the power is cut off, this circuit keeps the flashlight on for a while, allowing it to be located. The circuit is from a Radio Electronics from September 1992.
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...