WO2019076164A1

WO2019076164A1 - Waveform splitter

Info

Publication number: WO2019076164A1
Application number: PCT/CN2018/104514
Authority: WO
Inventors: 肖伟峰
Original assignee: 广东东方电讯科技有限公司
Priority date: 2017-10-16
Filing date: 2018-09-07
Publication date: 2019-04-25
Also published as: CN108051622A

Abstract

The present invention relates to a waveform splitter, comprising a first electronic switch, a second electronic switch and a control module. The first electronic switch and the second electronic switch are separately connected to a current input end. The control module is separately connected to a control end of the first electronic switch and a control end of the second electronic switch. The control module is used for controlling either the first electronic switch or the second electronic switch to open in a random on/off maintenance period. The first electronic switch and the second electronic switch can split the sine-wave current inputted by the current input end into two non-linear waveform currents, thus enabling a tested meter to measure the non-linear waveform currents. A primary circuit can synthesize the non-linear waveform of two branches into the sine-wave waveform current. The measurement of a conventional standard meter on the primary circuit sine wave can be employed to check the measurement of the tested meter on the non-linear waveform, thus determining whether the measurement is credible or not. Because the conventional standard meter measures the sine wave with standard traceablility, and therefore standard traceablility for non-linear waveform measurement can be realized.

Description

Wave splitting device

Technical field

The present invention relates to the field of nonlinear waveform measurement techniques, and more particularly to waveform splitting devices.

Background technique

There is currently no traceability standard for direct measurement of electrical energy in non-linear load conditions, and the accuracy of a meter that measures non-linear waveforms cannot be verified.

China Metrology Institute has proposed two indirect test waveforms for the measurement of the dynamic accuracy of electric energy meters or devices, but since the test waveforms are no longer sinusoidal, the test waveforms of the traceability devices of the standard tables currently used for reference are Sine wave, so it is impossible to directly prove that the accuracy of this standard table under non-linear load conditions is "trustworthy".

Therefore, the measurement of nonlinear waveforms and the traceability of standards are currently needed.

Summary of the invention

Based on this, it is necessary to provide a waveform splitting device in a targeted manner.

A waveform splitting device includes: a first electronic switch, a second electronic switch, and a control module;

The first end of the first electronic switch and the first end of the second electronic switch are respectively connected to the current input end, and the second end of the first electronic switch is used for connecting with the first current output end, The second end of the second electronic switch is configured to be connected to the second current output end;

The control module is respectively connected to a control end of the first electronic switch and a control end of the second electronic switch;

The control module is configured to control only one of the first electronic switch and the second electronic switch to be turned on during any on-off maintenance time.

In one embodiment, the method further includes a current detecting module, one end of the current detecting module is configured to be connected to the current input end, and the other end of the current detecting module is respectively connected to the first end of the first electronic switch The first end of the second electronic switch is connected.

In one embodiment, the first electronic switch is a MOS tube.

In one embodiment, the second electronic switch is a MOS tube.

In one embodiment, the first electronic switch is an IGBT.

In one embodiment, the second electronic switch is an IGBT.

In one embodiment, the first electronic switch is a triode.

In one embodiment, the second electronic switch is a triode.

In one embodiment, further comprising a first resistor and a second resistor, the second end of the first electronic switch being connected to the first current output terminal through the first resistor, and the second end of the second electronic switch The second resistor is connected to the second current output terminal.

In one embodiment, the resistance of the first resistor and the resistance of the second resistor are the same.

The invention has the beneficial effects that the first electronic switch and the second electronic switch are periodically turned on and off by the control module to control the first electronic switch and the second electronic switch, and the sine wave current input from the current input terminal is segmented. For two copies, two non-linear waveform currents are formed, so that the test meter can measure the current of the nonlinear waveform in series with the first electronic switch, and synthesize the nonlinear waveform of the two branches into the sine wave waveform through the trunk. The current is measured by the traditional standard meter for the measurement of the sine wave of the trunk. The test of the nonlinear wave is verified by the test table. It is easy to measure the nonlinear wave, and the standard table is sinusoidal and is traceable by standard. Standard traceability for nonlinear wave measurements.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a circuit diagram of a waveform splitting apparatus according to an embodiment;

2 is a circuit diagram of an application scenario of a waveform splitting apparatus according to an embodiment;

3 is a circuit diagram of an application scenario of a waveform splitting apparatus according to another embodiment;

4 is a waveform diagram of a first branch and a second branch after splitting by a waveform splitting device according to an embodiment.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 1 , a waveform splitting apparatus 100 according to an embodiment of the present invention includes: a first electronic switch 110, a second electronic switch 120, and a control module 130; a first end of the first electronic switch 110 and The first end of the second electronic switch 120 is respectively connected to the current input end, the second end of the first electronic switch 110 is used for connecting with the first current output end, and the second end of the second electronic switch 120 is The terminal is configured to be connected to the second current output end; the control module 130 is respectively connected to the control end of the first electronic switch 110 and the control end of the second electronic switch 120, and the control module 130 is used in any Periodically, only one of the first electronic switch 110 and the second electronic switch 120 is controlled to be turned on.

In this embodiment, the current input terminal is connected to the current output terminal of the standard power source, for example, the current input terminal is used for connecting with the current output terminal of the standard power source, and the standard power source is used for inputting the standard power to the waveform splitting device 100. The current, for example, a standard power source is used to input the sine wave current Isource.

In this embodiment, the second end of the first electronic switch 110 and the second end of the second electronic switch 120 are also used to connect to the common terminal Icom of the standard power source through a test circuit, wherein the test circuit is omitted in FIG.

Specifically, the control module 130 is configured to respectively control the on and off of the first electronic switch 110 and the second electronic switch 120. For example, the control module 130 is configured to respectively control the periodic switching of the first electronic switch 110 and the second electronic switch 120. For example, the control module 130 is configured to control only one of the first electronic switch 110 and the second electronic switch 120 to be turned on at any on-off maintenance time (t ₁ or t ₂ ), that is, at any on-off. Maintaining time (t ₁ or t ₂ ), only one of the first electronic switch 110 and the second electronic switch 120 is turned on, for example, the turn-on time of the first electronic switch 110 and the turn-on time of the second electronic switch 120 They are staggered from each other, for example, the first electronic switch 110 and the second electronic switch 120 are not turned on at the same time.

In this embodiment, the standard power source inputs current to the first electronic switch 110 and the second electronic switch 120 through the current input end, and the current input end is respectively connected to the first end of the first electronic switch 110 and the second electronic switch 120. One end is connected, that is, the first electronic switch 110 and the second electronic switch 120 are connected in parallel,

It is worth mentioning that the first electronic switch 110 and the second electronic switch 120 are not turned on at the same time. For example, the waveform splitting device 100 includes two electronic switches, and the two electronic switches are the first electronic switch 110 and the second electronic switch 120. At any on-off sustain time (t ₁ or t ₂ ), only one electronic switch is turned on, that is, at any cycle or any on-off sustain time, the controller 130 controls the first electronic switch 110 and the second electronic One of the switches 120 is turned on and controls the other of the first electronic switch 110 and the second electronic switch 120 to be turned off. The control module 130 sequentially turns on the first electronic switch 110 and the second electronic switch 120 in each of the on-off maintenance time, the on-off maintenance time includes a first maintenance time t ₁ and a second maintenance time t ₂ , and the control module 130 is configured to Controlling the first electronic switch 110 to be turned on at the first maintaining time, controlling the second electronic switch 120 to be turned off, and controlling the first electronic switch 110 to be turned off at the second maintaining time to control the second electronic switch 120 to be turned on, wherein the first maintaining time is The second maintenance time is equal, that is, the lengths of time of the first maintenance time and the second maintenance time are equal. Thus, the first sustain time and the second sustain time are continuously cycled, so that the first electronic switch 110 and the second electronic switch 120 are periodically turned on and off, thereby causing the current at the current input terminal to be split into two in different periods.

Specifically, referring to FIG. 2, the current input to the current input terminal is I _ref . During the first maintenance time t ₁ , the first electronic switch 110 is turned on, the second electronic switch 120 is turned off, and the current flowing through the first electronic switch 110 is I ₁ , at this time, the first current output terminal output current is I ₁ , the second current output terminal output current is 0; at the second maintenance time t ₂ , the second electronic switch 120 is turned on, the first electronic switch 110 is turned off, and flows through The current of the second electronic switch 120 is I _{2 , and the} output current of the second current output terminal is I ₂ , and the output current of the first current output terminal is 0. For a complete cycle, Isource = I ₁ + I ₂ .

As shown in FIG. 4, the current Isource input at the current input terminal is I _ref , and the waveform of I _ref is a sine wave, and the period of the waveform of the current is T, and the first electronic switch 110 and the second electronic switch 120 are turned on and off. t is the duration of the current waveform of the current I ₂ t ₁ and _2, the electronic switch 110 through the first I ₁ and a second electronic switch 120 as shown in FIG, I ₁ and 4 I of ₂ are both linear current, I ₁ and I ₂ are one and a half I _ref and _{_{_{I ref = I 1 + I 2}}} . The periodic control of the first electronic switch 110 and the second electronic switch 120 by the control module 130 causes the current of the sine wave to be divided into nonlinear waveforms, such that when the test table is connected in series with the first electronic switch 110 or The second electronic switch 120 is connected in series to enable measurement of nonlinear waveforms.

In one embodiment, as shown in FIG. 1, the waveform splitting device 100 further includes a current detecting module 160. One end of the current detecting module 160 is connected to the current input terminal, and the other end of the current detecting module 160 is respectively connected to the first The first end of the electronic switch 110 and the first end of the second electronic switch 120 are connected, that is, the current input end passes through the current detecting module 160 and the first end of the first electronic switch 110 and the first end of the second electronic switch 120. The current detecting module 160 is connected to the control module 130. The current detecting module 160 is configured to detect the current input by the current input terminal, that is, the current detecting module 160 is used for the terminal connection. Detecting the current of the current input terminal; the current detecting module 160 is configured to provide a zero-crossing detection signal to the control module 130, and the control module 130 is further configured to synchronously control the first electronic switch 110 or the second after receiving the zero-crossing detection signal. The periodic switching of the electronic switch 120, that is, after the current detecting module 160 detects the zero crossing of the current input terminal, the control module 130 starts to the first The electronic switch 110 and the second electronic switch 120 perform periodic on-off control, so that the splitting operation of the waveform is synchronized with the current input of the standard power source, so that the split nonlinear waveform can be compared with the standard power source in each cycle. Waveform matching.

In order to realize the on/off control of the first electronic switch 110 and the second electronic switch 120, for example, the control module 130 is a control chip, for example, the control module 130 is a single chip microcomputer. For example, the first electronic switch 110 and the second electronic switch 120 are respectively semiconductor device switches.

In one embodiment, the waveform splitting device further includes a first resistor and a second resistor, the second end of the first electronic switch being coupled to the first current output through the first resistor, the second electronic switch The second end is coupled to the second current output through the second resistor.

In one embodiment, the first electronic switch 110 is a MOS (metal oxide semiconductor) field effect transistor, and the first electronic switch 110 includes two MOS transistors, the second The electronic switch 120 is a MOS tube, and the second electronic switch 120 includes two MOS tubes, so that for the sinusoidal current of the alternating current, the two MOS tubes of the first electronic switch 110 can be turned on and off in two directions. The two MOS transistors of the second electronic switch 120 can be turned on and off in two directions, so that the turn-off of the conduction in the positive and negative half-waves can be realized. For example, the MOS transistor is a PMOS transistor, for example, the The MOS transistor is an NMOS transistor. In this embodiment, the control end of the first electronic switch 110 is the gate of the first electronic switch 110, the control end of the second electronic switch 120 is the gate of the second electronic switch 120, and the first of the first electronic switch 110 The terminal may be a source or a drain. The first end of the second electronic switch 120 may be a source or a drain. The control module 130 inputs a signal to the gate of the first electronic switch 110. An electronic switch 110 is turned on to input a signal to the gate of the second electronic switch 120 such that the first electronic switch 110 is turned on. The MOS transistor has a very fast switching speed, enabling the control module 130 to quickly control the on and off of the first branch and the second branch, which can further improve the switching efficiency of the current and can make the on-off maintenance time shorter. In order to make the switching frequency higher, the accuracy of the nonlinear waveform current is higher. It should be understood that the connection between the two MOS tubes of the first electronic switch 110 and the two MOS tubes of the second electronic switch can be set according to actual needs, and those skilled in the art can realize the connection of two MOS tubes according to the prior art. And to achieve conduction and deactivation in both directions, which is not cumbersome in this embodiment.

In one embodiment, the first electronic switch is an IGBT (Insulated Gate Bipolar Transistor), and the first electronic switch includes two IGBTs. In one embodiment, the second electronic switch is The IGBT, the second electronic switch comprises two IGBTs, the two IGBTs of the first electronic switch and the two IGBTs of the second electronic switch can also achieve conduction and closing respectively on the positive and negative half waves of the sine wave. Specifically, in this embodiment, the control end of the first electronic switch 110 is the gate of the first electronic switch 110, and the first end of the first electronic switch 110 may be a drain or a source, and the second electronic The control terminal is a gate of the second electronic switch 120, and the first end of the second electronic switch 120 can be a drain or a source, such that the control module 130 is directed to the gate of the first electronic switch 110 and The gate input signal of the second electronic switch 120 can realize the control of the on and off of the first electronic switch 110 and the second electronic switch 120.

In one embodiment, the first electronic switch 110 is a triode, the first electronic switch 110 includes two triodes, the second electronic switch 120 is a triode, and the second electronic switch 120 includes two triodes. In this embodiment, the control end of the first electronic switch 110 is the base of the first electronic switch 110, and the first end of the first electronic switch 110 may be a collector or an emitter, and the second electronic switch 120 controls The first end of the second electronic switch 120 may be a collector or an emitter. Thus, the control module 130 is directed to the base of the first electronic switch 110 and the second electron. The base input signal of the switch 120 can realize the control of the on and off of the first electronic switch 110 and the second electronic switch 120.

As shown in FIG. 2, it is a non-linear load power and energy measuring device 10 according to an embodiment of the present invention, which includes a waveform splitting device 100 and a test circuit. The waveform splitting device 100 includes a first electronic switch 110 and a second electronic switch 120. a first resistor R1, a second resistor R2, and a control module 130; the first end of the first electronic switch 110 and the first end of the second electronic switch 120 are respectively connected to a current input end, a second end of the electronic switch 110 is connected to the first end of the first resistor R1, and a second end of the second electronic switch 120 is connected to the second end of the second resistor R2, the first resistor a second end of the R1 and a second end of the second resistor R2 are respectively connected to the current output end; the control module 130 is respectively connected to the control end of the first electronic switch 110 and the second electronic switch 120 The console connection.

In this embodiment, the first electronic switch 110 is connected in series with the first resistor R1, the second electronic switch 120 is connected in series with the second resistor R2, and the first electronic switch 110 and the first resistor R1 are in the first branch and the second electronic The circuit where the switch 120 and the second resistor R2 are located is the first branch. Thus, when the control module 130 controls the first electronic switch 110 to be turned on and the second electronic switch 120 is controlled to be turned off, the first branch is turned on, and the current at the current input terminal is turned on. From the first branch to the current output terminal, when the control module 130 controls the second electronic switch 120 to be turned on, and controls the first electronic switch 110 to be turned off, the second branch is turned on, and the current at the current input terminal is transmitted from the second branch. To the current output.

In order to enable uniform current division of the current at the power input end, in one embodiment, the resistance of the first resistor R1 and the resistance of the second resistor R2 are the same, such that the first branch and the second branch Having the same resistance value, so that the current of the current input terminal can be quickly switched in the first branch and the second branch, and the current of the first branch and the second branch is more accurate, that is, the first branch The currents of the road and the second branch are respectively one-half of the current at the current input.

In order to achieve detection of the non-linear energy meter, in one embodiment, as shown in FIG. 2, the non-linear load power and energy measuring device 10 further includes a test table 140 in which the test table 140 is connected in series. The electronic switch 110 and the first branch where the first resistor R1 is located. In this embodiment, the test table 140 is connected in series in the first branch, and the test table 140 is a non-linear load electric energy meter, because the test table 140 is connected in series in the first branch. Therefore, the current detected by the test table 140 is the current of the nonlinear waveform on the first branch, that is, the current of the waveform after the sine wave is split, and the electric energy meter measures The current is one-half the current supplied to the current input.

In order to detect the current of the main circuit, that is, to detect the current input by the standard power source, in one embodiment, as shown in FIG. 2, the non-linear load power and energy measuring device 10 further includes a standard electric energy meter 150, the current output end. For connecting with the traditional standard electric energy meter 150, the traditional standard electric energy meter 150 is connected to the current output end, that is, the traditional standard electric energy meter 150 is connected in series in the trunk road, and the traditional standard electric energy meter 150 and the common power source common end Icom The connection is such that the waveform splitting device 100 is connected to a standard power source through a conventional standard power meter 150 to form a loop. The conventional standard electric energy meter 150 is a standard meter that has been traced by a sine wave. The conventional linear standard meter is used to detect a linear sine wave current, so that the conventional standard electric energy meter 150 can measure the sinusoidal current input at the current input end. The test table 140 is compared with the current of the standard electric energy meter 150 to detect whether the current of the test table 140 is one-half of the traditional standard electric energy meter 150, and the accuracy of the test of the test table 140 can be detected. And, the two non-linear waveforms of the first branch and the second branch are combined into a sinusoidal waveform current through a trunk road, and the conventional standard table measures the sine wave of the trunk road to check the measurement of the nonlinear wave by the test table. It is verified whether it is credible, and because the traditional standard meter measures sine waves and is standard traceable, the standard traceability of nonlinear wave measurement is realized.

In another embodiment, as shown in FIG. 3, the nonlinear standard electric energy meter 180 is connected in series with the first electronic switch 110 and the first branch where the first resistor R1 is located, that is, the test table 140. And the non-linear standard electric energy meter 180 is connected in series with the first electronic switch 110 and the first branch where the first resistor R1 is located. The nonlinear standard electric energy meter 180 in this embodiment is a nonlinear standard after traceability. The non-linear standard table is used to provide a standard for non-linear waveform detection, so that the accuracy of the detection of the test table 140 can be detected by detecting whether the currents detected by the test table 140 and the nonlinear standard electric energy meter 180 are equal. In this embodiment, since the non-linear standard electric energy meter 180 can provide a standard for non-linear waveform detection, thereby eliminating the need to connect a conventional standard electric energy meter in the main road, the detection of the test table 140 can be realized in the first branch.

For example, the test table 140 and the standard electric energy meter 150 are also connected to a voltage input terminal, which is a voltage output terminal of a standard power source, and provides a voltage Vsource of a standard voltage source for the test table 140 and the standard electric energy meter 150.

In order to enable a uniform splitting of the current at the input of the power supply, in one embodiment, as shown in FIG. 2, a balanced impedance 170 is also included, the balanced impedance 170 being connected in series with the second electronic switch and the second resistor R2. The second leg. The balanced impedance 170 has the same impedance as the test table 140, so that the first branch and the second branch can have the same impedance, and the current at the current input can be realized in the first branch and the second branch. The current balance during fast switching and the first branch and the second branch current are more accurate, that is, the currents of the first branch and the second branch are respectively one-half of the current at the current input.

In order to further reduce the influence of the measured meter and the balanced impedance 170 on the current, for example, the resistance of the test table 140 is smaller than the resistance of the first resistor R1, for example, the resistance of the balanced impedance 170 is smaller than that of the first resistor R2. The resistance value, that is, the resistance value of the test table 140 is less than one tenth of the resistance value of the first resistor R1, or the resistance value of the first resistor R1 is greater than ten times the resistance value of the test table 140. The resistance of the balanced impedance 170 is less than one tenth of the resistance of the second resistor R2, or the resistance of the second resistor R2 is greater than the resistance of the balanced impedance 170 of ten times.

In the above embodiments, the control of the first electronic switch 110 and the second electronic switch 120 by the control module 130 causes the first electronic switch 110 and the second electronic switch 120 to be periodically turned on and off, and the current input to the current input terminal is Divided into two, a current of two non-linear waveforms is formed, so that the test table 140 can measure the current of the nonlinear waveform after being connected in series with the first electronic switch 110.

The following is a specific embodiment:

The current loop of the test circuit is connected as shown in FIG. 2, and the broken line frame is a waveform splitting device. The waveform splitting device controls the electronic switches A and B through the control module, and divides the measuring current into two parts, which are respectively sent to the instrument to be tested and the balance circuit. The test waveform is shown in Fig. 4. The current flowing through the instrument under test is the waveform of the electronic switch A. The current flowing through the balanced impedance is the waveform of the electronic switch B. The standard flow is the synthesis of the two. When the error of the control module's switching control of the electronic switch is negligible, the current flowing through the standard meter can be considered to be a complete sine wave.

Figure 4 depicts the current waveform applied during the experiment. The time T is the period of the sine wave, t is the on-off maintenance time of the electronic switch, and the magnitude of the control t can control the frequency characteristic of the nonlinear waveform required by the test, wherein an on-off maintenance time t is equal to the first maintenance time. The sum of t ₁ and the second maintenance time t ₂ . By adjusting the time t, the test condition of the nonlinear response characteristic of the test object can be changed, and the smaller value of the time t corresponds to a higher test switching frequency.

The control principle of the electronic switch is that there is only one electronic switch in the on state at any on-off maintenance time, and the current flowing through the standard meter is the sum of the currents flowing through the two electronic switches. The typical control of the two currents is 1/2 of the waveform of the current flowing through the standard meter. Calculating the difference between the current of the test instrument and the current of the standard meter is 1/2 to obtain the measurement error of the test instrument.

(1) The waveform splitting device shown in FIG. 1 is characterized in that the sinusoidal current is divided into two complementary parts by an electronic switch, and only one of the current flows through the instrument or device under test for measurement. The energy metering characteristics of the instrument under test under non-linear load conditions; while the other current flows through the balanced impedance, and the resultant current flows through the standard table.

(2) The waveform splitting device shown in Fig. 1 is characterized in that the current flowing through the standard meter is still a complete sine wave, thus solving the traceability problem of the standard meter and solving the accuracy of the tested instrument. The "trustworthiness" problem of traceability.

(3) The waveform splitting device shown in Fig. 1 is characterized in that the sinusoidal current is divided into two parts of higher frequency, and the frequency of the divided power can be changed to change the nonlinearity of the test waveform of the power/electric energy measurement in the nonlinear working condition. .

(4) The present invention proposes to construct a waveform splitting device based on FIG. On the basis of the traditional verification equipment, the device can be used to verify the energy metering characteristics of the non-linear load conditions of the electric energy meter or device, without modifying the original test standard power source and standard table.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A waveform splitting device, comprising: a first electronic switch, a second electronic switch, and a control module;

The first end of the first electronic switch and the first end of the second electronic switch are respectively connected to the current input end, and the second end of the first electronic switch is used for connecting with the first current output end, The second end of the second electronic switch is configured to be connected to the second current output end;

The control module is respectively connected to a control end of the first electronic switch and a control end of the second electronic switch;

The control module is configured to control only one of the first electronic switch and the second electronic switch to be turned on during any on-off maintenance time.
The waveform splitting device according to claim 1, further comprising a current detecting module, one end of the current detecting module is connected to the current input end, and the other end of the current detecting module is respectively connected to the first A first end of an electronic switch and a first end of the second electronic switch are coupled.
The waveform splitting device according to claim 1 or 2, wherein the first electronic switch is a MOS transistor.
The waveform splitting apparatus according to claim 3, wherein said second electronic switch is a MOS transistor.
The waveform splitting device according to claim 1 or 2, wherein the first electronic switch is an IGBT.
The waveform splitting apparatus according to claim 5, wherein said second electronic switch is an IGBT.
The waveform splitting device according to claim 1 or 2, wherein the first electronic switch is a triode.
The waveform splitting apparatus according to claim 7, wherein said second electronic switch is a triode.
The non-linear load power output device according to claim 1 or 2, further comprising a first resistor and a second resistor, wherein the second end of the first electronic switch passes the first resistor and the first current The output terminal is connected, and the second end of the second electronic switch is connected to the second current output terminal through the second resistor.
The waveform splitting device according to claim 9, wherein the resistance of said first resistor and the resistance of said second resistor are the same.