Adjustable constant-current source I designed for things like laser diodes. Full details at: [ Ссылка ]
More details on the grounded-wiper potentiometer feedback network: [ Ссылка ]
This was used to power a 300mW 808nm laser diode on the AxiDraw drawing machine for some rudimentary laser cutting: [ Ссылка ]
Ещё видео!