This circuit can provide constant currents adjustable between 1 and 10 mA. The transistors can be BC548 and BC558. The circuit is from a 1991 publication. The components can be changed to operate on other current ranges.
This circuit can provide constant currents adjustable between 1 and 10 mA. The transistors can be BC548 and BC558. The circuit is from a 1991 publication. The components can be changed to operate on other current ranges.