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在交流电网电压较低的地方,使用电视机时将出现幅度明显缩小、同步严重不稳、亮度和清晰度下降的现象,影响正常收看。当电源电压为220 V 时,12英寸电视机的次级电压约为18 V。保证电视机正常工作的最低电源电压一般不得低于170 V,这时次级电
In places where the voltage of the AC power grid is low, there will be a noticeable decrease in amplitude when using the TV, a serious and unstable synchronization, and a decrease in brightness and sharpness, which will affect normal viewing. The secondary voltage of a 12-inch TV is about 18 V when the supply voltage is 220 V. To ensure the normal operation of the TV the minimum power supply voltage generally not less than 170 V, then the secondary power