CPC H02M 1/126 (2013.01) | 10 Claims |
1. A noise filter comprising:
a noise detector which detects a common mode noise on an electrical path;
a cancellation signal output circuitry which generates a cancellation signal from the detected common mode noise and outputs the cancellation signal;
an injector which injects the cancellation signal into the electrical path; and
a grounded capacitor connected to the electrical path, wherein
the cancellation signal output circuitry includes
a filter part which generates the cancellation signal by filtering the detected common mode noise, and
an amplification part which amplifies the cancellation signal, and
a temperature dependence of a product of an inductance value and a capacitance value of a main circuit portion including the noise detector, the injector, and the grounded capacitor, and a temperature dependence of a product of an inductance value and a capacitance value of the filter part, are equal to each other.
|