This static switch or triac contactor was obtained from Philips 1969 documentation. The SCR is from the era, but modern equivalents depending on the load can be used.
circuit is used to increase the sensivity of a relay. A 50 to 100 mA relay can be triggered with...
The configuration shown makes use of a simple source and the gain is given by the relationship between R3...
This blinker consists of a simple multivibrator and instead of the lamp, an LED and a 470 ohms...