A Frequency Response Measurement Method of Leakage Current and Touch Current
A technology of frequency response and contact current, applied in frequency measurement devices, frequency-to-amplitude conversion, measurement using digital measurement technology, etc., can solve problems such as limiting the high-frequency characteristics of operational amplifiers, and achieve enhanced capabilities, reliability, and safety Guaranteed effect
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[0026] A method for measuring the frequency response of leakage current and contact current, comprising the steps of:
[0027] Step 1. Perform hardware compensation for high-frequency analog signal attenuation through the frequency response measurement circuit:
[0028] The frequency response measurement circuit is as figure 1 Shown: Vin+ of the signal under test is connected to the non-inverting input terminal of the fourth ADI operational amplifier chip (ADI4) through the seventh resistor (R7), and Vin- of the signal under test is connected to the fifth ADI op-amp chip through the eighth resistor (R8). The non-inverting input end of the put chip (ADI5), the inverting input end and the output end of the fourth ADI op-amp chip ADI4 are connected to the inverting input end of the sixth ADI op-amp chip ADI6 through the ninth resistor R9 and the sixth ADI op-amp The inverting input terminal of the chip ADI6 is connected to its output terminal through the twelfth resistor R12, th...
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