This LED special effects circuit was found in the February 1992 Radio Electronics magazine. The circuit uses 4 LEDs and is controlled by R3.
This circuit was found in a 1980s documentation. The low voltage circuit uses a PUT. Transistors can...
June 2017 - Mouser Electronics has a broad line of Cree products for use in horticulture, such as...
The TDA2040 is not a common IC these days, but if you find one you can build this high quality...