...sonic）三星（SAMSUNG）飞利浦（PHILIPS）夏普（SHARP）兄弟（BROTHER）赛杰（SAGEM）枫叶（CJT）丰达（Photar）光电通（GTLED）等系列传真机的维修服务。
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提出一种串联电池组电压测量新方法：光电继电器取代机械继电器选通各节电池电压；
The paper puts forward a new method to measure series battery voltage, mechanical relay is replaced by photoelectric relay to select each battery voltage.
利用反射式光电开关的电路的通断来控制报警电路，有灵敏度高、隐蔽性好的特点。
The paper provides us with the idea of using photoelectricity reflective on-off switch to control alarm circuit with the characteristics of high sensitivity and favourable concealment.
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