This circuit was found in a documentation from 1948. There are 5 valves with push-pull output. The source uses a transformer, and the indicated application is with turntables.
This circuit can be used to activate the lamp when it gets dark. We found the circuit in old...
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
This circuit generates slow interval steps for controlling stepper motors. The circuit has two...