This precision bench test circuit can deliver currents in a range of 10 uA to 10 mA. The circuit is from an 80's documentation. The components are from the time.
This circuit allows 220 / 240V shavers to be used in the 110V network. The diodes can be general...
Found in July 1975, Radio Electronics magazine this circuit can use any operating circuit,...
Here we have in the figure the configuration of the circuit as a conventional Darlington. In this...