Lightning arrester resistive current testing sensor
A technology of resistive current and lightning arrester, applied in the electronic field, to achieve strong anti-interference ability, ensure safe operation, and facilitate online detection
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[0034] The present invention will be described in detail below in conjunction with specific embodiments.
[0035] Such as figure 1 As shown, a lightning arrester resistive current test sensor includes a single-turn through-core current sensor circuit, the single-turn through-core current sensor circuit is connected to a power-taking circuit, and a bidirectional transient suppression diode is provided in the single-turn through-core current sensor circuit , Plays the role of over-voltage protection. It is equipped with resistors R1 and R6 to convert the current signal into voltage signal and sampled by dividing voltage. It is equipped with diode D1 and diode D2 for clamping the sampling voltage, and is used for instant lightning overvoltage. Rectified diode D3, diode D4, diode D5, diode D6, LM358 dual operational amplifier, the LM358 dual operational amplifier is used to adjust the rectified voltage, LM358 dual operational amplifier includes two independent, high gain, The dual op...
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