Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay intermittently. Triggering is done by a reed switch, but other types of sensors can be used.
The integrated circuit used in this circuit is not common today, because it is a configuration obtained in...
This Siliconix circuit was found in a 1980s documentation. The coil consists of 18 turns of 22...
In the figure we show how to implement an audio oscillator with the 741 integrated circuit by...