Temperature responsive apparatus employing a thermocouple
    32.
    发明授权
    Temperature responsive apparatus employing a thermocouple 失效
    使用热电偶的温度响应装置

    公开(公告)号:US4188623A

    公开(公告)日:1980-02-12

    申请号:US819993

    申请日:1977-07-28

    摘要: A temperature responsive apparatus includes a thermocouple producing a thermoelectric e.m.f. depending on the temperature difference between a temperature to be detected and a circumferential temperature and a first winding supplied with current from the thermocouple to generate a first magnetic field. A second winding is connected to a voltage source to generate a second magnetic field in the opposite direction to that generated by the first winding and a reed switch is positioned in the total magnetic field generated by the first and the second windings so as to respond to the intensity of the total magnetic field to make and break its contacts. A diode is also connected to the voltage source, and the second winding is always excited in accordance with the voltage drop across the diode to maintain said second magnetic field.

    摘要翻译: 温度响应装置包括产生热电偶的热电偶 取决于要检测的温度与圆周温度之间的温度差和提供有来自热电偶的电流的第一绕组以产生第一磁场。 第二绕组连接到电压源以产生与由第一绕组产生的方向相反的方向的第二磁场,并且簧片开关位于由第一和第二绕组产生的总磁场中,以响应于 总磁场的强度使其触点断开。 二极管也连接到电压源,并且第二绕组总是根据二极管两端的电压降激励,以保持所述第二磁场。