This circuit was found in Motorola's 1968 documentation. The SCRs are then replaceable with current equivalents. The lamp is 24 V according to the power supply.
July 2016 - It can be obtained from Mouser Electronics new trinkets Adafruit. These trinkets are...
We found this mains-powered switch circuit in Electronics Now magazine from July 1994. It could be...
This circuit uses a current regulator from the 90's. This component is uncommon nowadays. The...