| 摘要 |
<p>PURPOSE:To effectively inhibit generation of noise by inserting a detect-ion circuit of noise between a radio receiver mounted on an automobile and a high-voltage power source and changing the frequency of a high frequency oscillation circuit or impressed voltage for the high-voltage power source in accordance with the output sent from the detection circuit of noise. CONSTITUTION:In an air cleaner for an automobile equipped with a high voltage power source 1 incorporating a high frequency oscillation circuit 2 and a fly- back transformer 3, a detection circuit 4 of noise is connected between the high voltage power source 1 and a radio receiver 5 mounted on the automobile. The oscillation frequency in the high frequency oscillation circuit 2 or impressed voltage for the high-voltage power source 1 is changed in accordance with the output sent from the detection circuit 4 of noise. As a result, generation of noise in the air cleaner for the automobile effectively is inhibited.</p> |
