Increasing temperature warning device

Details Increasing temperature warning device Increasing temperature warning device

1988-10-11

1990-02-13

Tokar, Michael J.

Communications: electrical

Condition responsive indicating system

Specific condition

307310, 340635, G01K 700

Patent

active

049010603

ABSTRACT:
An increasing temperature warning device for protecting an item from high temperature or fire damage comprising a thyristor connected in parallel with a reference voltage source. An audible or visual warning means is connected in series with the thyristor. When the temperature of the thyristor exceeds a specified temperature, the thyristor switches on and the warning means is activated. A series combination of a diode and a resistor can be connected in parallel with the gate of the thyristor to cause the reference voltage to be a function of the ambient temperature of the protected device. A diode connected in series with the thyristor allows the increasing temperature warning device to be powered by an alternating current source and a pair of thin wire fuses protect the warning device from excess current situations.

REFERENCES:
patent: 3277460 (1966-10-01), Heckman
patent: 3469250 (1969-09-01), Voigt
patent: 4087848 (1978-05-01), Hyink
patent: 4331888 (1982-05-01), Yamauchi
patent: 4438348 (1984-03-01), Casper

Affiliated with

Also associated with

Rating

Increasing temperature warning device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Increasing temperature warning device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Increasing temperature warning device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1171233