Indirect current monitoring via voltage and impedance monitoring

Details Indirect current monitoring via voltage and impedance monitoring Indirect current monitoring via voltage and impedance monitoring

1982-09-30

1985-04-30

Paschall, M. H.

Electric heating

Heating devices

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

364483, 324 76R, 219497, 219202, 307 39, 244134D, H05B 102

Patent

active

045146195

ABSTRACT:
Electrical circuitry for monitoring the current flow through resistance elements on the leading edge of an aircraft wing or horizontal stabilizer. The resistance elements are individually and sequentially activated for heating to thereby effect a de-icing or anti-icing function. The non-activated elements are sensed by the circuitry to determine inferentially if there is a predetermined current flow through the heating elements to achieve the intended de-icing or anti-icing function.

REFERENCES:
patent: 3453415 (1969-07-01), Hermes et al.
patent: 3789190 (1974-01-01), O'rosy et al.
patent: 4161691 (1979-07-01), Vermeers
patent: 4315316 (1982-02-01), Boros et al.

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