Bandpass filtering type multifunctional power tester based on voltage comparison circuit
A technology of voltage comparison circuit and band-pass filter, which is applied in the direction of electric power measurement through current/voltage, measurement of current/voltage, and components of electrical measuring instruments, etc., which can solve problems such as single function, avoid misjudgment, and have high precision , The effect of improving test efficiency
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[0023] Such as figure 1 Shown, a kind of band-pass filter type multifunction power tester based on the voltage comparator circuit of the present invention mainly consists of a single-chip microcomputer, a voltage sensor, a current sensor, a signal conversion module connected to the single-chip microcomputer, a phase detection circuit and a display, respectively A voltage sampling and holding circuit and a current sampling and holding circuit connected to the signal conversion module, a current comparison circuit and a voltage comparison circuit respectively connected to the phase detection circuit, and a belt connected in series between the current comparison circuit and the phase detection circuit The voltage sensor is connected in series between the voltage sampling and holding circuit and the voltage comparison circuit; the current sensor is connected in series between the current sampling and holding circuit and the current comparison circuit.
[0024] Wherein, single-chip...
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