This circuit uses opposing MOSFETs operating on a 6 to 15 V input voltage. The circuit is from 1997 Linear Technology Applications and uses common components at the time.
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...
This circuit with the 555, was obtained in a 90s American documentation. The signal must be...
This project makes use of a technology without many digital components and that can be easily...