Detector for controlled supply voltage
专利汇可以提供Detector for controlled supply voltage专利检索，专利查询，专利分析的服务。并且PURPOSE:To eliminate the effect of scattering of the Zener voltage and prevent a mercury contact relay from chattering, by energizing the mercury contact relay in the saturation region of a transistor, and providing a difference between the detection voltage and the reset voltage. CONSTITUTION:The controlled supply voltage is divided by means of resistors 4b, 4c and 4a and variable resistor 3 through a transformer 1 and a rectifier circuit 2. When the controlled supply voltage is normal, a transistor 8 is supplied with a base current sufficient to be saturated. Consequently, a mercury contact relay 6 is energized, and a contact 9 is closed, so that the voltage-dividing ratio of the voltage- dividing circuit becomes high. When the controlled supply voltage is lower than a given value, the divided voltage becomes lower than the Zener voltage of a Zener diode 5. Consequently, the transistor 8 is turned OFF, and the contact relay 6 is unenergized, so that the voltage-dividing ratio becomes low. Thereby, the detection voltage value can be readily set. Moreover, the mercury contact relay can be prevented from chattering.，下面是Detector for controlled supply voltage专利的具体信息内容。
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