Automotive burglar alarm that recycles after its initial alarm p

Details Automotive burglar alarm that recycles after its initial alarm p Automotive burglar alarm that recycles after its initial alarm p

1991-01-09

1992-07-07

Ng, Jin F.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

180287, 307 102, 340426, B60R 2510

Patent

active

051286505

ABSTRACT:
An alarm system for an automotive vehicle including direct coupled input connections which provide a voltage proportional to the amount of current interchanged between, the battery and the electrical system of the vehicle. An arming circuit is responsive to the voltage and arms the burglar alarm only when less than a predetermined current is interchanged between the battery and the electrical system. An alarm circuit produces an alarm when the alarm system is armed and more than a predetermined amount of current is drawn from the battery.

REFERENCES:
patent: 3706966 (1972-12-01), So et al.
patent: 3831141 (1974-08-01), Bowman
patent: 3891967 (1975-06-01), Betts
patent: 3930226 (1975-12-01), Plumberg
patent: 3956732 (1976-05-01), Teich
patent: 4205300 (1980-05-01), Ho et al.
patent: 4539548 (1985-09-01), Crites
patent: 5003287 (1991-03-01), Peters et al.

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