The circuit shown is from the 1977 GE semiconductor manual. More modern equivalent SCRs can be used. R1 must be wire type.
This well-crafted speed game setup for two competitors was found in a 1998 Poptronics. The circuit...
September 2017 - Microchip is making available through Mouser Electronics the ARM Cortex® M +...
This power source with silicon diodes at a time when valves were still used was found in Radio...