The light-test circuit with functions of power supply maintenance and auto cutoff

Published:2011/8/23 22:06:00 Author:Borg | Keyword: light-test circuit, power supply maintenance, auto cutoff | From:SeekIC

In the circuit, both R1 and R2 are used in shutter adjustment, both R3 and R4 are used in halo adjustment, R5 is the linearity adjuster, capacitor C and R6 are the time delay element. The circuit has the functions of power supply maintenance and auto cutoff, which can keep lighting for 15s after the finger leaves the key while light testing, and then turns off automatically.



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