Balanced bridge
A technology of balancing electric bridges and electric bridges, which is used in the measurement of electrical variables, resistance/reactance/impedance, measurement devices, etc. problem, to achieve the effect of low cost, few originals, and fast balancing speed
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[0024] The specific implementation of the balanced bridge of the present invention will be described below with reference to the accompanying drawings, but it should be pointed out that the embodiments of the present invention are preferred embodiments for the purpose of explanation, and are not intended to limit the scope of the present invention.
[0025] See attached figure 1 , a balanced electric bridge, using a single-chip microcomputer as a hardware platform, adopts an analog-digital hybrid method to realize electric bridge balance and impedance measurement, which includes an input signal source M11, a reference impedance M12, an impedance to be measured M13, and an electric bridge balance module M14 and a balance control module M15. The bridge balance module M14 includes a measured impedance current extraction unit M141 and a reference impedance current extraction unit M142. The balance control module M15 includes a voltage detection module M151, a feedback circuit mod...
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