BJT Constant Current Driver @ElectronXLab

BJT Constant Current Driver @ElectronXLab

Uploaded March 2017 | Updated September 2026, 2 weeks ago

See how to design a simple, low power constant current driver for LEDs. In this case, a single NPN transistor is used to create a current sink for an LED.

David Williams
elen.ca

BJT Constant Current Driver

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BJT Constant Current Driver