Suggested by General Electric in 1965 documentation, this circuit controls the current at a load from half to maximum power. The circuit is for loads up to 900 W with the indicated components.
This circuit that uses only transistors indicates when the voltage in the circuit has the voltage...
This circuit serves as an audio output for AM or even FM radios and was found in a Radio...
This configuration is suggested by Mullard (Philips) in an old manual of 555 integrated circuits....