Found in 1967 General Electric documentation this circuit appears elsewhere in this section. SCRs are common to the 106 Series and more steps can be added to the circuit.
This fast trigger circuit allows the counting of up to 300 pulses per minute. The circuit is from...
This intercom uses transistors from the 60s. It was found in a Japanese publication at the time....
This circuit is from an old publication from the 90s, but it can be adapted to operate with LEDs....