Low voltage LED driver circuit

Details Low voltage LED driver circuit Low voltage LED driver circuit

1988-10-03

1989-09-12

Moore, David K.

Communications: electrical

Land vehicle alarms or indicators

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

340762, 340811, 315307, G09G 332

Patent

active

048664308

ABSTRACT:
A low voltage LED driver circuit utilizes a small magnitude inductor in combination with an astable multivibrator to supply sufficient operating voltage to illuminate an LED from a supply voltage source less than the LED's typical operating voltage. By use of the high pulse rate of multivibrator in conjunction with the small magnitude inductor, the LED is turned on and off at a rate at which it appears to be continuously illuminated to the human eye.

REFERENCES:
patent: Re32365 (1987-03-01), Sebestyen
patent: 3740570 (1973-06-01), Kaelin et al.
patent: 3813664 (1974-05-01), Geyer
patent: 3828547 (1974-08-01), Fujita
patent: 4060752 (1977-11-01), Walker
patent: 4190836 (1986-02-01), Kimura et al.
patent: 4633141 (1986-12-01), Weber

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