| 摘要 |
PURPOSE:To improve the noise eliminating effect with use of a noise preventing filter put into a power supply circuit and to reduce the noise level, by connecting a filter coil for prevention of noise to a high voltage generating circuit of a TV receiver. CONSTITUTION:A rectifying circuit 3 is connected to an AC power supply AC100V of a TV receiver via a noise preventing filter 1. The rectified voltage is converted into the DC voltage 116V through a stabilizing circuit 4 and supplied to a horizontal deflecting circuit. A filter coil 5 for prevention of noise is connected to a flyback transformer for generation of high voltage of the horizontal deflecting circuit and between the primary side of a BT6 and the circuit 4. Thus the filter 5 eliminates noise components the same in phase to each other. In such a way, the noise eliminating effect with the filter 1 is improved the noise level is reduced. |
