電壓監(jiān)測器設(shè)成“接通=1”，當電流超過大約80至100毫安時，電流監(jiān)測器設(shè)成“接通=1”。電壓監(jiān)測器用來檢查整個跳閘回路的狀態(tài),而電流監(jiān)測器可用于封閉輸出觸點直到外部觸點斷開電流。上面所說的A型輸出電路的結(jié)構(gòu)圖如下圖所示。其中，a)選用電壓監(jiān)測器b)選用電流監(jiān)測器c)無監(jiān)測

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