Heating element

Details Heating element Heating element

H - Electricity

05

B

309/98

H05B 3/14 (2006.01) H01C 7/04 (2006.01)

Patent

CA 1220807

4881-145 ABSTRACT OF THE DISCLOSURE A heating element comprises a resistor formed from fine particles or thin films having a negative temperature coefficient of electrical resistance, and highly resistant region layers interposed between the fine particles or thin films. At least two separate electrodes are arranged in con- tact with different particles or layers of the resistor. An AC voltage is applied across the electrodes at a frequency which is sufficiently high that the independance between the electrodes is substantially independent of interface capacitances between the electrodes and the surface of the resistor. This heating element is meritorious in that it can be formed into an optional shape, is low in power consumption, can be rapidly heated, has temperature self-adjusting perfor- mance and temperature detecting performance and is extremely durable. Case No. 56-77.920

403508

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