This circuit was found in RCA documentation from the 90s. It consists of a power control for a load based on a thermocouple. The integrated circuits are uncommon today.
This increased voltage regulator is from a 1980 publication, but it can be mounted using a BD136...
This circuit activates a garage door by the car headlights car or a lantern. The circuit is from a...
This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and...