This circuit is from a 1969 RE Experimenters Handbook. The circuit is powered by the voltage of the circuit being tested. Integrated circuits are current.
We find this circuit in an American publication of 1978. It is intended only for cars that have...
In fact, this dimmer can be used with currents up to 1.5 A according to the General Electric...
This 6-transistor transistor radio was manufactured in Japan in the 1960s. It is a portable...