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本刊今年第4期曾介绍了HG—9301EN/EP多制式附加板的原理,收到广大读者的欢迎,本期继续就两块附加板各接口的加装部位作一介绍。表1中列举了目前常见彩电机芯机型具体加装部位。两种附加板主要元器件分布参看图1。 CZ1接口。①②③脚是色差信号输出脚,其引线可分别接至彩电3只视放管E极。彩电视放电路常见组成形式如图2所示,其加装部位用“△”记号表示。对于图2d所示的电路,因3只共射管的E极是在一起连接的,加装时,将3只管子E极断开。分别与其公共电路接3只100～150Ω电阻,再将CZ1①②③脚接至相应E极部位即可。图2a、2b、2c在PAL制彩电较常见,图2d、2e、2f在单N制彩电中是较常见的。 CZ2接口。①脚电源地,②脚是14.5～18V直流电压输入端。一般彩电行变压器与开关电源电路都有此电压输出。有
This issue No. 4 of this year has introduced the principle of HG-9301EN / EP multi-standard add-on board, received the majority of readers welcome, this issue continue to add two additional board interface to introduce an introduction. Table 1 lists the current common color TV models specific parts installed. The main components of the two additional board distribution see Figure 1. CZ1 interface. ① ② ③ feet is the color difference signal output pin, the lead can be connected to the color TV respectively 3 tubes put E pole. Common TV circuit components shown in Figure 2, the installation of parts marked with “△”. For the circuit shown in Figure 2d, the E poles of the three common-emitter tubes are connected together, and when installed, the three tubes are severed E pole. Respectively with its public circuit then three 100 ~ 150Ω resistor, and then CZ1 ① ② ③ feet connected to the corresponding E pole position can be. Figures 2a, 2b and 2c are more common in PAL color televisions and FIGS. 2d, 2e and 2f are more common in mono N color televisions. CZ2 interface. ① foot power, ② feet is 14.5 ~ 18V DC voltage input. The general color TV line transformers and switching power supply circuits have this voltage output. Have