在電路板中，不管是什么類型的電路板基本上都是由: 電源給應(yīng)電路、輸入接口電路、微處理器控制電路、輸出接口電路、顯示電路、保護電路和通信電路等7大部分電路組成。只要咱們掌握了這七大類的電路組成結(jié)構(gòu)和控制原理，知道每類電路的結(jié)構(gòu)組成特點和關(guān)鍵部件，能在電路板中判斷出每部分電路是屬于那一類電路熟悉每一類電路的故障規(guī)律和特點、就可以針對各種類型的電路板進行維修了。
電源供應(yīng)電路: 電源供應(yīng)電路部分電路是向整個電路板中各個單元電路提供能量的一部分電路，它工作在高電壓、大電流的環(huán)境下是最容易出故障的一部分電路
電源供應(yīng)電路的功用是: 將220VAC或380VAC交流電轉(zhuǎn)換成電路板所需的各種不同等級、輸出電壓恒定的+5V 、12V、15V、18V、24V等級別的直流電

FM9925A-E

In the circuit board, no matter what type of circuit board is basically composed of: power supply circuit, input interface circuit, microprocessor control circuit, output interface circuit, display circuit, protection circuit and communication circuit, etc. As long as we master the circuit composition and control principle of these seven categories, know the structural composition characteristics and key components of each type of circuit, can determine in the circuit board that each part of the circuit belongs to that type of circuit familiar with the fault law and characteristics of each type of circuit, you can repair for various types of circuit boards.
Power supply circuit: The power supply circuit is a part of the circuit that provides energy to each unit circuit in the entire circuit board, and it works in the environment of high voltage and high current
The function of the power supply circuit is to convert 220VAC or 380VAC AC into a variety of different grades required by the circuit board, and the output voltage is constant +5V, 12V, 15V, 18V, 24V grade direct current

FM9925A-E