Circuit for measuring asymmetric waveform alternating current
By using a dual-path half-wave rectifier circuit structure, the problem of measuring asymmetrical waveform AC current in existing technologies is solved, and accurate measurement of current changes is achieved.
Patent Information
- Application Number
- CN202423304456.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing AC current acquisition circuits cannot effectively reflect asymmetrical AC current waveforms, resulting in the inability to accurately measure real current changes.
A dual-path half-wave rectifier circuit is adopted. Through a circuit structure consisting of a first switching diode, a second switching diode, a current-limiting resistor, and a capacitor, the asymmetrical alternating current is superimposed and integrated to reflect the true changes in current.
It effectively displays the changes in asymmetrical alternating current and accurately measures the true waveform of the current.
Smart Images
Figure CN223756806U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to current collection technical field especially relates to a circuit of measuring asymmetric waveform alternating current. BACKGROUND
[0002] The existing alternating current collection circuit can not effectively reflect asymmetric waveform alternating current, and the general alternating current collection circuit adopts amplification, filtering, shaping, and AC-DC conversion for measurement, but for asymmetric waveform alternating current, such processing will filter effective information and can not reflect the change of real current. SUMMARY
[0003] The utility model discloses a kind of circuits of measuring asymmetric waveform alternating current.
[0004] To achieve the above object, the technical scheme of the utility model is as follows:
[0005] A kind of circuit of measuring asymmetric waveform alternating current, characterized by, including first switch diode D1 and second switch diode D2, the anode of first switch diode D1 is connected with alternating current input end, the cathode of first switch diode D1 is connected with one end of first current-limiting resistor R1, the other end of first current-limiting resistor R1 is connected with one end of first capacitor C1, the other end of first capacitor C1 is grounded, the other end of first current-limiting resistor R1 is connected with alternating current output end, the cathode of second switch diode D2 is connected with alternating current input end, the anode of second switch diode D2 is connected with one end of second current-limiting resistor R2, the other end of second current-limiting resistor R2 is connected with one end of second capacitor C2, the other end of second capacitor C2 is grounded, the other end of second current-limiting resistor R2 is connected with alternating current output end.
[0006] Further, alternating current input end is connected with filter resistor R3.
[0007] The utility model adopts positive and negative two-way half-wave rectifier circuit, and superimposes integration to asymmetric alternating current, effectively shows the change of asymmetric alternating current, and can reflect the change of real current. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is the schematic diagram of the circuit of the utility model.
[0009] Reference signs:
[0010] D1 first switch diode, D2 second switch diode,
[0011] R1 first current-limiting resistor, R2 second current-limiting resistor, R3 filter resistor,
[0012] C1 is the first capacitor, and C2 is the second capacitor. Detailed Implementation
[0013] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0014] This utility model discloses a circuit for measuring asymmetrical waveform AC current, applied to an AC 0-100μA detection circuit, such as... Figure 1 As shown, it specifically includes a first switching diode D1 and a second switching diode D2, both of which use IN4148.
[0015] The AC current input terminal is connected to a filter resistor R3, which is 33KΩ, to filter out high-frequency signals that affect AC acquisition.
[0016] like Figure 1 As shown, the positive terminal of the first switching diode D1 is connected to the AC current input terminal, the negative terminal of the first switching diode D1 is connected to one end of the first current limiting resistor R1, which is 10KΩ, the other end of the first current limiting resistor R1 is connected to one end of the first capacitor C1, which is 47nF / 25V, the other end of the first capacitor C1 is grounded, and the other end of the first current limiting resistor R1 is connected to the AC current output terminal.
[0017] The negative terminal of the second switching diode D2 is connected to the AC current input terminal, and the positive terminal of the second switching diode D2 is connected to one end of the second current limiting resistor R2, which is 10KΩ. The other end of the second current limiting resistor R2 is connected to one end of the second capacitor C2, which is 47nF / 25V. The other end of the second capacitor C2 is grounded, and the other end of the second current limiting resistor R2 is connected to the AC current output terminal.
[0018] like Figure 1 As shown, the other end of the first current-limiting resistor R1 is equipped with test node A, and the other end of the second current-limiting resistor R2 is equipped with test node B, which can be used to measure the two half-wave rectifier circuits respectively.
[0019] This invention employs a first switching diode D1, a first current-limiting resistor R1, a first capacitor C1, and a second switching diode D2, a second current-limiting resistor R2, and a second capacitor C2. The positive and negative half-wave rectifier circuits superimpose and integrate the asymmetrical AC current to reflect the changes in the asymmetrical AC current.
[0020] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A circuit for measuring an asymmetrical waveform alternating current, characterized by, It comprises a first switch diode D1 and a second switch diode D2, the positive pole of the first switch diode D1 is connected with an alternating current input end, the negative pole of the first switch diode D1 is connected with one end of a first current-limiting resistor R1, the other end of the first current-limiting resistor R1 is connected with one end of a first capacitor C1, the other end of the first capacitor C1 is grounded, the other end of the first current-limiting resistor R1 is connected with an alternating current output end, the negative pole of the second switch diode D2 is connected with the alternating current input end, the positive pole of the second switch diode D2 is connected with one end of a second current-limiting resistor R2, the other end of the second current-limiting resistor R2 is connected with one end of a second capacitor C2, the other end of the second capacitor C2 is grounded, and the other end of the second current-limiting resistor R2 is connected with the alternating current output end.
2. The circuit for measuring an asymmetric waveform alternating current according to claim 1, characterized by, The alternating current input end is connected with a filter resistor R3.