This 1965 Philips circuit uses old company transistors like the BFY51 and BFY50. The circuit is powered by 12 V and the power gain is 8.9 dB.
This circuit is from a current regulator up to 1 A, ie a constant current source. The LM320...
This useful power supply was found in an 1985 Italian publication, but can still be assembled...
This circuit can provide constant currents adjustable between 1 and 10 mA. The transistors can be...