This static switch circuit or solid-state contactor was found in a Motorola documentation from 1968. The circuit can control a 5 A load with the indicated transistor.
This configuration was found in a 1970s American magazine. The circuit uses both CMOS logic and...
Found in the August 1982 issue of Radio Electronics magazine, this circuit lights LEDs in sequence...
This flasher with a well-known configuration was suggested by a 1977 publication by Radio Shack. The...