Temperature control in which the control parameter is the degree

Details Temperature control in which the control parameter is the degree Temperature control in which the control parameter is the degree

1986-12-19

1989-01-03

Paschall, M. H.

Electric heating

Heating devices

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

219504, 219501, 219494, 219 1075, 324 58B, H05B 102

Patent

active

047958863

ABSTRACT:
A temperature control system is disclosed for controlling heating current to a heater having an impedance which varies substantially with temperature. The change in impedance of the heater changes the degree of mismatch between the power transmission system and the heater resulting in a change in the voltage which is reflected back to the power transmission system. The reflected voltage is monitored and its magnitude compared to a reference source and the power to the heater is controlled in response to this comparison.

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