Optical indicator device

Details Optical indicator device Optical indicator device

1984-01-27

1987-06-09

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

340648, 340635, 315136, G08B 2100

Patent

active

046723676

ABSTRACT:
An optical indication circuit in which a light-emitting diode is included in the feed current path of an IC which is energized via a dissipation resistor and a rectifier diode directly from the alternating voltage supply.

REFERENCES:
patent: 3636541 (1972-01-01), Genuit et al.
patent: 3838294 (1974-09-01), Leete
patent: 3969672 (1976-07-01), Wallander et al.
patent: 4017847 (1977-04-01), Burford et al.
patent: 4034369 (1977-07-01), Tanigawa et al.
patent: 4389124 (1983-06-01), Longnecker

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