Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1991-07-12
1993-09-07
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
Specific condition
340310CP, 340538, G08B 1314
Patent
active
052433285
ABSTRACT:
A power distribution and anti-theft alarm system for monitoring a plurality of electronic equipment utilizes existing front-end noise suppressor capacitors to provide a return path along the power supply lines of an injected RF current back to the system monitoring. Accordingly, removal or cutting of the power supply cords to the various electronic equipment can be monitored to provide a theft deterrent. Corresponding LEDs are utilized to provide status of the various channels coupled to the power distribution and anti-theft alarm system. Accordingly, power on/off, alarm on/off and electronic equipment status is indicated.
REFERENCES:
patent: 3553674 (1968-10-01), Head
patent: 3633199 (1972-01-01), Curry
patent: 4121201 (1978-10-01), Weathers
patent: 4695788 (1987-09-01), Marshall
Lee Jung K.
Lee Yong H.
Ng Jin F.
Oda Christine K.
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