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35D2型电视机采用两块线性集成电路,减少了整机电路的调整,故深受电视技术爱好者的喜爱,成为目前业余制作中最多的机种之一.电源电压低而调不上去,是自制35D2型机常见的故障之一.35D2型机稳压电源的一个特点是具有过载保护能力,不易烧断2A熔丝,除非12V或整流输出直接短路。当整机电流超过1.5A左右时,稳压电源输出即下跌,使整机电流因电源电压下跌而降低。所以,在大多数清况下,12V电压低是整机电流过大所致。该
35D2-type TV with two linear integrated circuits, reducing the adjustment of the whole circuit, so by the love of television enthusiasts, become the most amateur production models one of the low power supply voltage is not adjustable, is Homemade 35D2 machine one of the common failures .35D2 machine power supply is a characteristic of overload protection, easy to blow 2A fuse, unless 12V or rectifier output direct short circuit. When the total current exceeds about 1.5A, the output of the regulated power supply drops, causing the current of the whole machine to decrease due to the drop of the power supply voltage. Therefore, under most conditions, 12V low voltage is due to the current machine is too large. This