Driving method of ceramic heating element for an infrared ray so

Details Driving method of ceramic heating element for an infrared ray so Driving method of ceramic heating element for an infrared ray so

1997-07-21

1999-06-01

Paschall, Mark H.

Electric heating

Heating devices

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

219494, 219505, 338 22R, H05B 102

Patent

active

059085720

ABSTRACT:
A ceramic heating element has been conventionally driven by direct-current voltage, but the direct-current voltage causes a problem in the heating element. Therefore, in a method of the present invention, an alternating current is supplied to the heating element by changing a direct current, so that deformation of the heating element can be prevented and reliability can be improved.

REFERENCES:
patent: 4282422 (1981-08-01), Payne et al.
patent: 4606306 (1986-08-01), Caron et al.
patent: 5260548 (1993-11-01), Todd et al.
patent: 5369246 (1994-11-01), Nanos
patent: 5451747 (1995-09-01), Sullivan et al.
patent: 5493101 (1996-02-01), Innes

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