This circuit is from the 1990 Motorola Data Databook. The circuit can be implemented with equivalent transistors. The power supply must be symmetrical.
Found in an Electronic Design from the 90's, this circuit uses common components. The circuit is...
When the sensor receives light, the relay closes its contacts and remains so even after the light...
This circuit produces pulses of 90 V at intervals that can reach 5 minutes. The circuit is from a...