Found in a 1967 Ferranti documentation, this circuit uses a LDR from that time as a sensor. Transistors can be replaced with modern equivalents.
This circuit generates a pulse of approximately 1 second when the light incident on the sensor...
We found this powerful amplifier that uses common transistors in a 1998 documentation. The power...
This circuit is from 1994 documentation. It consists of a control for several DC motors that are...