Zero inrush alarm circuit

Details Zero inrush alarm circuit Zero inrush alarm circuit

1996-09-05

1997-09-30

Hofsass, Jeffrey

Communications: electrical

Condition responsive indicating system

Specific condition

323303, 323901, 323908, 328278, 363 89, G08B 2100

Patent

active

056730306

ABSTRACT:
A zero inrush visual or visual/audible alarm circuit which includes a transistor switch and resistor combination connected in series with a storage capacitor provides inrush resistance for a period following initial power-on. The transistor switch may be controlled by a microcontroller or a simple timer.

REFERENCES:
patent: 4628431 (1986-12-01), Kayser
patent: 4719553 (1988-01-01), Hinckley
patent: 4952906 (1990-08-01), Buyak et al.
patent: 5010293 (1991-04-01), Ellersick
patent: 5087871 (1992-02-01), Losel
patent: 5121033 (1992-06-01), Kosich
patent: 5122724 (1992-06-01), Criss
patent: 5128591 (1992-07-01), Bocan
patent: 5374887 (1994-12-01), Drobnik
patent: 5400009 (1995-03-01), Kosich et al.

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