Found in the November 1999 issue of Electronics Now magazine, this circuit generates a 6.67 Hz signal from a 4.1952 Hz crystal.
Assembled with SMD components this circuit can be very small. The range is a few tens of meters. We...
With the circuit shown, obtained in a 1980 publication, a reed-relay is activated with a resistive...
This circuit is a shield for microcontrollers and computers drivind high power loads. In the...