1-minute delay with Triac (CB21406E)

We found this circuit in a 1965 General Electric manual. The controlled load depends on the Triac and the 100 uF capacitor delay time.

| Clique na imagem para ampliar |

Temperature alarm (CB9476E)
Found in American documentation from the 90s, this circuit triggers a buzzer with a Sonalert-type...
Old power supply (CB23622E)
This power source with silicon diodes at a time when valves were still used was found in Radio...
Burned Lamp Detector (CB15721E)
This circuit causes a green LED to light up when we step on the brakes and the rear lamps to light...