This low frequency sinusoidal oscillator was obtained in documentation from the 1970s. Operational equivalents can be used. The FET is a general-purpose type.
November 2016 - Mouser Electronics already has the new Microchip MCP1810 Low Dropout (LDO)...
This bistable touch sensor circuit uses a relay and is very sensitive. We found it in a 1990...
This transmitter has a few watts of output power, having been found in a 1997 documentation. L1...