Conductivity test device and electrical equipment

Conductivity test device and electrical equipment

  • CN 105,652,095 A
  • Filed: 11/14/2014
  • Published: 06/08/2016
  • Est. Priority Date: 11/14/2014
  • Status: Active Application
First Claim
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1. the test device of an electrical conductivity, it is characterised in that including:

  • Square wave occurring source, is used for producing square-wave signal;

    First filter circuit, is connected to described square wave occurring source, and the described square-wave signal for described square wave occurring source is produced is filtered processing, and is not comprised the sinusoidal signal of flip-flop, using by described sinusoidal signal as test voltage;

    Test electrode unit, including at least three group test electrodes being connected in parallel, described test electrode unit is connected to described first filter circuit, for described test voltage is applied to medium to be tested;

    Current detection circuit, for detecting the current signal flowing through described test electrode unit, and is converted into corresponding voltage signal by the current signal detected;

    On-off circuit, is connected between described test electrode unit and described current detection circuit, is used for the duty of often group test electrode at least three groups test electrodes described in controlling;

    Frequency multiplier circuit, is connected to described current detection circuit, for described voltage signal is carried out process of frequency multiplication;

    Signal processing circuit, is connected to described frequency multiplier circuit, for determining the electrical conductivity of described medium to be tested according to the voltage signal after described frequency multiplier circuit processes.

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