The maximum input voltage of this circuit is 20V and the output current is 250 mA. The circuit is from old documentation. The integrated circuit used is no longer common in our time.
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...