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松下NV—G30录像机早期在社会上有一定的拥有量,和其他机型一样电源部分的故障率较高,现就该机型介绍一下电源电路原理与维修技术。一、NV—G30录像机的电源电路工作原理与分析 NV—G30录像机的电源电路如图1、图2所示。该机采用的是串联式稳压电源电路,主要由电源变压器T_(1101)、多路稳压厚膜集成电路IC_(1101)及部分分立元件组成。该机电源变压器及部分分立元件安装在电源电路板上,电路见图1。而多路稳压厚膜集成电路及部分分立元件安装在主电路板上,电路见图2。
Panasonic NV-G30 VCR early in the community have a certain amount of ownership, and other parts of the same high-power failure rate is high, the aircraft is introduced to the power circuit principle and maintenance techniques. First, NV-G30 VCR power supply circuit works and analysis NV-G30 VCR power supply circuit shown in Figure 1, Figure 2 shows. The machine uses a series of regulated power supply circuit, mainly by the power transformer T_ (1101), multi-channel regulator IC_ (1101) thick film and some discrete components. The machine power transformer and some discrete components installed in the power circuit board, the circuit shown in Figure 1. The multi-channel regulator thick film integrated circuits and some discrete components installed on the main circuit board, the circuit shown in Figure 2.