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Commonly used control base transistor electronic relays

Source: InternetPublisher:containsmachine Updated: 2019/09/09

常用的控制基极的晶体管电子继电器 Figure a shows an electronic relay controlled by an NPN transistor using +Ec power supply. Figure b shows the NPN transistor grounding control circuit. Figure c shows an electronic relay controlled by a PNP transistor using -Ec. Figure d is an electronic relay with self-generated bias.

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