With the capacitor used, this circuit provides delays of 40 to 60 seconds. Larger capacitors can be used, and the SCR supports an equivalent. The circuit is from the 1977 RC semiconductor manual.
This is one of the channels of an amplifier suggested by Westinghouse in 1970s documentation. The circuit...
This circuit shuts off and locks the power to a load in the event of a failure. The circuit is from...
August 2017 - STMicroelectronics' BlueCoin development environment is available at Mouser...