Patent ID: 7176698

Claim:
A voltage transformer circuit comprising: a primary winding around a core, the primary winding being coupled to receive a voltage to be sensed; a first center-tapped secondary winding around a core, the first secondary winding being coupled to a first output terminal; a second center-tapped secondary winding around a core, the second secondary winding being coupled to the first output terminal; and a bridge circuit for minimizing temperature dependence on an output voltage, the bridge circuit comprising a first resistor and a second resistor, the first resistor having a first and second end, the first end of the first resistor coupled to the first secondary winding and the second resistor having a first and second end, the first end of the second resistor coupled to the second secondary winding and the second end of the first resistor and the second end of the second resistor coupled to a second output terminal.