Test circuit
    1.
    发明授权
    Test circuit 失效
    测试电路

    公开(公告)号:US4007713A

    公开(公告)日:1977-02-15

    申请号:US608552

    申请日:1975-08-28

    摘要: A test circuit for use with a boiler control circuit. A test switch and a lamp are connected between ground and a water level electrode. In the presence of a water path, a sufficient potential drop exists between ground and the electrode to light the lamp when the test switch is closed. If a ground or short exists, the lamp will not light.

    摘要翻译: 用于锅炉控制电路的测试电路。 测试开关和灯连接在地面和水位电极之间。 在水路存在的情况下,当测试开关闭合时,地面和电极之间存在足够的电位降低以点亮灯。 如果存在接地或短路,则指示灯不亮。