This circuit is one of many that can be found in this section using the 555. This circuit was found in old American documentation being applied to cars that use contact breaker.
When the sensor X1 is opened, the relay is energized. When waiting, the current drained is very...
Based on the LF256 operational amplifier, this circuit was found in the September 1989 issue of...
This circuit was found in a 1968’s Motorola documentation. The transistor is from that time. The...