Direct current micro voltage/micro current detection device and detection method thereof
A detection device, micro-current technology, applied in directions such as indicating the presence of current/voltage, using digital measurement technology for measurement, etc. , micro-current detection technology blank and other problems, to achieve the effect of effective detection device and detection method
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[0019] Examples, see figure 1 As shown, a kind of DC microvoltage / microcurrent detecting device of the present invention comprises an oscillating circuit, a digital signal amplifying circuit, a subtractor 5 and a value conversion circuit 6; the oscillating circuit comprises two completely identical parameters A voltage-controlled oscillator 1 and a second voltage-controlled oscillator 2; the digital signal amplifying circuit includes two first counters 3 and second counters 4 with identical parameters; the input of the first voltage-controlled oscillator 1 is output by the detection signal Terminal, the input of the second voltage-controlled oscillator 2 is grounded, that is, connected to the 0 input terminal; the outputs of the first voltage-controlled oscillator 1 and the second voltage-controlled oscillator 2 correspond to the first counter 3 and the second counter 4 respectively. The input is connected; the outputs of the first counter 3 and the second counter 4 are respec...
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