Moisture responsive system for removing condensation

Details Moisture responsive system for removing condensation Moisture responsive system for removing condensation

1972-07-24

1976-07-06

Envall, Jr., R. N.

Electric heating

Heating devices

Combined with diverse-type art device

219522, 317DIG3, B60L 102

Patent

active

039683427

ABSTRACT:
A device for controlling electric current flowing through a conductor-coated, condensation-free transparent glass sheet in response to the presence of moisture on the surface of the sheet. Moisture-detecting electrodes forming part of an oscillator are attached to the surface of the sheet and receive an AC voltage developed within the oscillator. The electrical resistance between the electrodes changes in response to the amount of moisture and alters the level of output from an oscillator. A relay circuit is controlled by the oscillator output to switch a power supply circuit on and off, thereby controlling the current flowing through the glass sheet.

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