Heated glazing panel and a circuit for controlling the heat output as a function of the resistance of the heater element and voltage of the power source
First Claim
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1. A glazing panel, comprising:
- at least one sheet of vitreous material;
a conductive transparent coating which is provided on at least one face of at least one sheet of the at least one sheet of vitreous material and which constitutes a heating element for the glazing panel when connected to an electrical power source; and
a control circuit for controlling heating power output of the glazing panel, the control circuit comprising adjustable means for controlling the heating power output to a preselected level as a function of voltage of the electrical power source and electrical resistance of the heating element.
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Abstract
A glazing panel includes at least one sheet of vitreous material; a conductive transparent coating which is provided on at least one face of at least one sheet of the at least one sheet of vitreous material and which constitutes a heating element for the glazing panel when connected to an electrical power source; and a control circuit for controlling heating power output of the glazing panel, the control circuit including adjustable means for controlling the heating power output to a preselected level as a function of voltage of the electrical power source and electrical resistance of the heating element.
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Citations
21 Claims
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1. A glazing panel, comprising:
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at least one sheet of vitreous material; a conductive transparent coating which is provided on at least one face of at least one sheet of the at least one sheet of vitreous material and which constitutes a heating element for the glazing panel when connected to an electrical power source; and a control circuit for controlling heating power output of the glazing panel, the control circuit comprising adjustable means for controlling the heating power output to a preselected level as a function of voltage of the electrical power source and electrical resistance of the heating element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A control circuit for controlling heating power output of a glazing panel comprising at least one sheet of vitreous material;
- and a conductive transparent coating which is provided on at least one face of at least one sheet of the at least one sheet of vitreous material and which constitutes a heating element when connected to an electrical power source, the control circuit comprising;
adjustable means for controlling the heating power output to a preselected level as a function of voltage of the electrical power source and electrical resistance of the heating element. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
- and a conductive transparent coating which is provided on at least one face of at least one sheet of the at least one sheet of vitreous material and which constitutes a heating element when connected to an electrical power source, the control circuit comprising;
Specification