Current transformer capable of broadband wide-width measurement and magnetic interference resistance
The invention discloses a current transformer capable of broadband wide-width measurement and magnetic interference resistance, and belongs to the technical field of transformers. A signal conditioning circuit comprises an induction circuit, a differential amplification circuit and a power amplifica...
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Main Authors | , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
07.01.2020
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a current transformer capable of broadband wide-width measurement and magnetic interference resistance, and belongs to the technical field of transformers. A signal conditioning circuit comprises an induction circuit, a differential amplification circuit and a power amplification circuit; a Hall chip of the induction circuit is fixed in an air gap formed in the magnetic core; the output end of the power amplification circuit is connected with one end of a secondary coil; the other end of the secondary coil is connected in series with a first sampling resistor Rm1 and then is grounded; the point where the first sampling resistor Rm1 is grounded serves as a negative signal output end M1-; the point where the first sampling resistor Rm1 is connected with the secondarycoil serves as a positive signal output end M1+; the signal conditioning circuit further comprises a constant voltage source circuit; and the output end of the constant voltage source circuit is connected with the Hall chip. |
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Bibliography: | Application Number: CN201911109810 |