We found this circuit that triggers an SCR in the Encyclopedia of Electronic Circuits volume 5 of 1995. The circuit is powered by voltage according to the warning load.
This sensitive Japanese mid-wave receiver from the 1960s has an output power of 45 mW and is...
This basic TTL watch and minute clock circuit was found in European documentation from the 1970s....
This circuit uses a pickup coil to take the signal from a telephone line without contacts. The circuit...