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 experimental amplifier was found in the 1960 Mullard transistor reference manual. The...
This circuit from Motorola is from 1968, appearing elsewhere on this site. The transistors admit...
This circuit triggers the LED when the monitored battery voltage drops below 9 V for 12 V...