Dynamic drive circuit for light-emitting diodes

Details Dynamic drive circuit for light-emitting diodes Dynamic drive circuit for light-emitting diodes

1977-11-02

1980-02-26

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

307246, 340166EL, 340782, 340802, 340811, G09F 932

Patent

active

041908368

ABSTRACT:
In a dynamic drive circuit for light-emitting diodes, at least one of the rise and fall times of the current flowing through the light-emitting diode is elongated to reduce the higher harmonic components contained in the current.

REFERENCES:
patent: 3388292 (1968-06-01), Burns
patent: 3564135 (1971-02-01), Weimer
patent: 3742260 (1973-06-01), Boudry
patent: 3833833 (1974-09-01), Nelson
patent: 3990070 (1976-11-01), Spence
patent: 4011557 (1977-03-01), Chetelat et al.
patent: 4070663 (1978-01-01), Kanatani et al.
patent: 4110662 (1978-08-01), Greeneich et al.

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