This adjustable frequency circuit was found in December 1986, Radio Electronics magazine. The base frequency is given by C1 and the power supply must be 5 V.
This transmitter has a range of approximately 50 meters and operates in the FM range with a...
This switch is bounce free and is recommended for the control of CMOS circuits. The switch must be...
This circuit controls two relays from a single temperature sensor. The first fires when the...