This circuit was found in a 1970 American publication. The FETs are power types according to the desired output current. The operational can be replaced for modern equivalents.
Toshiba is selling through Mouser Electronics its high current SSM3 MOSFETs Series for mobile...
This lamp flasher configuration using an astable multivibrator is from a 1968 publication. The...
This approach alarm was found in Radio Electronics from July 1990. The circuit must be powered by a...