Fusing temperature control circuit

Details Fusing temperature control circuit Fusing temperature control circuit

1993-05-24

1994-12-13

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219481, 219501, 219505, 374163, 323369, H05B 102

Patent

active

053731417

ABSTRACT:
A circuit for controlling the temperature of a system by sensing a temperature is disclosed. The circuit includes a heater heated by a given control signal, a thermistor installed around the heater and having variable resistivity according to an environmental temperature, a temperature sensing circuit for supplying a supply voltage of a given level to either one terminal of the thermistor and generating a temperature detecting voltage corresponding to the variation of resistivity of the thermistor, a disconnection detecting circuit connected between the supply voltage and a ground voltage, for generating a disconnection state signal in response to the current cutoff of the other terminal of the thermistor, a temperature state detecting circuit for generating a temperature state signal by comparing the temperature detecting voltage with a preset reference voltage, and a heater control circuit connected to receive the disconnection state and temperature state signals generated respectively from the disconnection detecting and temperature state detecting circuits, for controlling the heater.

REFERENCES:
patent: 4467386 (1984-08-01), Wasson
patent: 4564748 (1986-01-01), Gupton
patent: 4613746 (1986-09-01), MacLaughlin
patent: 4793343 (1988-12-01), Cummins, Jr. et al.
patent: 4845341 (1989-07-01), Rae
patent: 5191191 (1993-03-01), St Aubyn
patent: 5229579 (1993-07-01), Ingraham et al.

Affiliated with

Also associated with

Rating

Fusing temperature control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1194668