Multi-output exponential wave generation loop

Abstract

The utility model relates to a multi-output exponential wave generation loop, which relates to the technical field of output circuits and comprises a power supply capacitor, a distribution resistor, a load inductor and a wave modulation loop. The anode of the power supply capacitor is electrically connected with the input end of the wave modulation loop, and the cathode of the power supply capacitor is grounded; the output end of the wave modulation loop is electrically connected with the first end of the distributed resistor, the second end of the distributed resistor is electrically connected with the first end of the load inductor, and the second end of the load inductor is grounded; the output current of the exponential wave generation loop accords with the waveform of the exponential wave, and the output current is the current passing through the distributed resistor; and the wave modulation loop is used for adjusting the corresponding loop design according to the waveform output parameter of the output current. The method has the effect of outputting multiple different types of exponential waves.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of output circuit, in particular to a multi-output exponential wave generating circuit. BACKGROUND

[0002] Exponential waves have a wide range of applications in the fields of electronic engineering, signal processing, control systems, etc. Due to the unique growth or decay characteristics of exponential waveforms, they play a key role in various technologies. Therefore, how to obtain ideal exponential waves has become the goal of the majority of technical personnel.

[0003] The related technology uses an exponential function signal generating circuit to form an exponential wave, which includes a triangular wave adjusting circuit and a conversion circuit. The triangular wave adjusting circuit adjusts the triangular wave signal generated by the signal generator to be symmetric about the x-axis, and then the conversion circuit converts the adjusted triangular wave into an exponential function waveform output.

[0004] According to the related technology in the above, the inventors believe that there is a defect that it is difficult to output multiple different types of exponential waves. CONTENT OF THE UTILITY MODEL

[0005] In order to be able to output multiple different types of exponential waves, the present application provides a multi-output exponential wave generating circuit.

[0006] The multi-output exponential wave generating circuit provided by the present application adopts the following technical solution:

[0007] A multi-output exponential wave generating circuit, comprising a power supply capacitor, a distributed resistance, a load inductance and a wave adjusting circuit; the positive electrode of the power supply capacitor is electrically connected with the input end of the wave adjusting circuit, and the negative electrode of the power supply capacitor is grounded; the output end of the wave adjusting circuit is electrically connected with the first end of the distributed resistance, the second end of the distributed resistance is electrically connected with the first end of the load inductance, and the second end of the load inductance is grounded; the output current of the exponential wave generating circuit conforms to the exponential wave waveform, and the output current is the current through the distributed resistance; the wave adjusting circuit is used to adjust the corresponding circuit design according to the waveform output parameters of the output current.

[0008] By adopting the above technical solution, the wave adjusting circuit adjusts the circuit design, so that the output current of the exponential wave generating circuit can output the corresponding exponential wave according to the waveform output parameters on the premise of conforming to the exponential wave waveform, thereby realizing the requirement of outputting multiple different types of exponential waves.

[0009] Optionally, in the case that the waveform output parameter includes an exponential wave with a current peak value greater than 10 kA and a waveform of 6.4 / 69 us, the wave modulation circuit includes a first wave modulation resistor and a first wave modulation inductor; the input end of the wave modulation circuit corresponds to the first end of the first wave modulation resistor, the output end of the wave modulation circuit corresponds to the first end of the first wave modulation inductor, and the second end of the first wave modulation resistor and the second end of the first wave modulation inductor are electrically connected.

[0010] By adopting the above technical solution, by setting the first wave modulation resistor and the first wave modulation inductor, the exponential wave with a current peak value greater than 50 kA and a waveform of 6.4 / 69 us in the waveform output parameter is obtained, and the output demand is met.

[0011] Optionally, the resistance value of the distributed resistor is 20 mΩ, the inductance value of the load inductor is 3 uH, the resistance value of the first wave modulation resistor is 2.5 Ω, and the inductance value of the first wave modulation inductor is 1 uH.

[0012] By adopting the above technical solution, a setting mode of circuit element parameters is provided, so that the exponential wave generation circuit can output an exponential wave with a current peak value greater than 50 kA and a waveform of 6.4 / 69 us.

[0013] Optionally, in the case that the waveform output parameter includes an exponential wave with a current peak value greater than 30 kA and a waveform of 6.4 / 69 us, the wave modulation circuit includes a second wave modulation resistor, a second wave modulation inductor, and a first parallel wave modulation branch; the input end of the wave modulation circuit corresponds to the first end of the second wave modulation resistor, the output end of the wave modulation circuit corresponds to the first end of the second wave modulation inductor, and the second end of the second wave modulation resistor and the second end of the second wave modulation inductor are electrically connected; the first end of the first parallel wave modulation branch is connected to the output end of the wave modulation circuit, and the second end of the first parallel wave modulation branch is grounded.

[0014] By adopting the above technical solution, by setting the second wave modulation resistor, the second wave modulation inductor, and the first parallel wave modulation branch, the exponential wave with a current peak value greater than 30 kA and a waveform of 6.4 / 69 us in the waveform output parameter is obtained, and the output demand is met.

[0015] Optionally, the first parallel wave modulation branch includes a parallel wave modulation resistor and a parallel wave modulation inductor; the first end of the parallel wave modulation inductor corresponds to the first end of the first parallel wave modulation branch, the second end of the parallel wave modulation inductor is electrically connected to the first end of the parallel wave modulation resistor, and the second end of the parallel wave modulation resistor corresponds to the second end of the first parallel wave modulation branch.

[0016] By adopting the above technical solution, a circuit structure of the first parallel wave modulation branch is disclosed.

[0017] Optionally, the distributed resistance has a resistance of 20 mΩ, the load inductor has an inductance of 5 uH, the second wave-shaping resistance has a resistance of 2.5 Ω, the second wave-shaping inductor has an inductance of 1 uH, the parallel wave-shaping resistance has a resistance of 20 mΩ, and the parallel wave-shaping inductor has an inductance of 5 uH.

[0018] By adopting the technical scheme, the circuit element parameter setting manner is provided, so that the exponential wave generation circuit can output an exponential wave with a current peak value greater than 30 kA and a waveform of 6.4 / 69 us.

[0019] Optionally, in the case that the waveform output parameter includes an exponential wave with a current peak value greater than 100 kA and a waveform of 10 / 1000 us, the wave-shaping circuit includes a third wave-shaping resistance and a second parallel wave-shaping branch, the input end of the wave-shaping circuit corresponds to a first end of the third wave-shaping resistance, and the output end of the wave-shaping circuit corresponds to a second end of the third wave-shaping resistance; a first end of the second parallel wave-shaping branch is connected to the output end of the wave-shaping circuit, and a second end of the second parallel wave-shaping branch is grounded.

[0020] By adopting the technical scheme, the third wave-shaping resistance and the second parallel wave-shaping branch are set, so that the exponential wave with a current peak value greater than 100 kA and a waveform of 10 / 1000 us in the waveform output parameter is obtained, and the output requirement is met.

[0021] Optionally, the second parallel wave-shaping branch includes a Crowbar switch, a positive electrode of the Crowbar switch is grounded, and a negative electrode of the Crowbar switch is connected to the output end of the wave-shaping circuit.

[0022] By adopting the technical scheme, a circuit structure of the second parallel wave-shaping branch is disclosed.

[0023] Optionally, the distributed resistance has a resistance of 8 mΩ, the load inductor has an inductance of 10 uH, and the third wave-shaping resistance has a resistance of 1 Ω.

[0024] By adopting the technical scheme, the circuit element parameter setting manner is provided, so that the exponential wave generation circuit can output an exponential wave with a current peak value greater than 100 kA and a waveform of 10 / 1000 us.

[0025] Optionally, the power supply capacitor has a capacitance of 40 uF.

[0026] By adopting the technical scheme, the capacitance of the power supply capacitor is disclosed.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The wave adjustment circuit is adjusted to adjust the circuit design, so that the output current of the exponential wave generation circuit can output the corresponding exponential wave according to the waveform output parameters on the premise of meeting the exponential wave form, thereby realizing the requirement of outputting various types of exponential waves;

[0029] 2. By adjusting the wave adjustment circuit, the current peak value in the waveform output parameter is greater than 50kA and the exponential wave with a waveform of 6.4 / 69us, or the current peak value in the waveform output parameter is greater than 30kA and the exponential wave with a waveform of 6.4 / 69us, or the current peak value is greater than 100kA and the exponential wave with a waveform of 10 / 1000us;

[0030] 3. The circuit element parameters are provided for implementation, so that the exponential wave generation circuit can adjust the waveform output parameters of the exponential wave according to the actual demand. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a circuit diagram of a multi-output exponential wave generation circuit provided by an embodiment of the present application.

[0032] Figure 2 is a circuit diagram of a multi-output exponential wave generation circuit provided by an embodiment of the present application Figure One .

[0033] Figure 3 is a schematic diagram of an exponential wave output waveform provided by an embodiment of the present application Figure One .

[0034] Figure 4 is a circuit diagram of a multi-output exponential wave generation circuit provided by an embodiment of the present application Figure Two .

[0035] Figure 5 is a schematic diagram of an exponential wave output waveform provided by an embodiment of the present application Figure Two .

[0036] Figure 6 is a circuit diagram of a multi-output exponential wave generation circuit provided by an embodiment of the present application Figure Three .

[0037] Figure 7 is a schematic diagram of an exponential wave output waveform provided by an embodiment of the present application Figure Three .

[0038] Reference signs: 1, power supply capacitor; 2, distributed resistance; 3, load inductance; 4, wave adjustment circuit; 41, first wave adjustment resistance; 42, first wave adjustment inductance; 43, second wave adjustment resistance; 44, second wave adjustment inductance; 45, parallel wave adjustment resistance; 46, parallel wave adjustment inductance; 47, third wave adjustment resistance; 48, Crowbar switch. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and not to limit the present application. Figures 1 to 7 and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and not to limit the present application.

[0040] The present application discloses a multi-output exponential wave generating circuit. Referring to Figure 1 , the multi-output exponential wave generating circuit comprises a power supply capacitor 1, a distributed resistance 2, a load inductance 3 and a wave modulation circuit 4; the positive electrode of the power supply capacitor 1 is electrically connected with the input end of the wave modulation circuit 4, and the negative electrode of the power supply capacitor 1 is grounded; the output end of the wave modulation circuit 4 is electrically connected with the first end of the distributed resistance 2, the second end of the distributed resistance 2 is electrically connected with the first end of the load inductance 3, and the second end of the load inductance 3 is grounded; the output current of the exponential wave generating circuit conforms to the exponential wave shape, and the output current is the current passing through the distributed resistance 2; the wave modulation circuit 4 is used for adjusting the corresponding circuit design according to the waveform output parameter of the output current.

[0041] Optionally, the load inductance 3 comprises a circuit distributed inductance.

[0042] The power supply capacitor 1 plays the role of power supply in the exponential wave generating circuit, and the power supply capacitor 1 is discharged in the exponential wave generating circuit. Optionally, the capacitance value of the power supply capacitor 1 is 40uF. Illustratively, the power supply capacitor 1 is composed of several capacitors, and the total capacitance value reaches 40uF. Further, the maximum charging voltage of the power supply capacitor 1 is 160kV, and the rated charging voltage is 140kV.

[0043] After the power supply capacitor 1 is charged to the preset voltage, the distributed resistance 2, the load inductance 3 and the wave modulation circuit 4 are connected in series in turn to form a circuit. The power supply capacitor 1 starts to discharge, and in the discharging process, the electric energy of the capacitor 1 will be converted into heat energy and magnetic field energy through the distributed resistance 2, the load inductance 3 and the wave modulation circuit. With the passage of time, the voltage of the power supply capacitor 1 will gradually decrease until the discharging is completed. During the discharging process, due to the setting of the wave modulation circuit 4, the output current passing through the distributed resistance 2 will form a specific waveform, which presents an exponential wave in the present application. On the other hand, the wave modulation circuit 4 can adjust the specific waveform of the output current, so that the output current meets the design requirements.

[0044] The implementation principle of the multi-output exponential wave generating circuit of the present application is that when the exponential wave generating circuit needs to output an exponential wave, the wave modulation circuit 4 will adjust the corresponding circuit design according to the output waveform of the output current, so that the output current presents an exponential wave, and each parameter of the output current meets the preset design requirements.

[0045] Embodiment 1

[0046] In the SAE5412 standard, etc., it is generally provided that when the direct lightning induced indirect effect A wave is performed, the output waveform is required to be a 6.4 / 69us exponential wave, and the A wave exponential wave output can be achieved. The peak value of the exponential wave is 200kA±20kA, the action integral is 2.0×106A2S, and the duration is ≤500us.

[0047] Therefore, with reference to the above standard, it is referred to Figure 2 In the case where the waveform output parameter includes a current peak value greater than 50kA and a waveform of a 6.4 / 69us exponential wave, the wave modulation circuit 4 includes a first wave modulation resistor 41 and a first wave modulation inductor 42; the input end of the wave modulation circuit 4 corresponds to the first end of the first wave modulation resistor 41, the output end of the wave modulation circuit 4 corresponds to the first end of the first wave modulation inductor 42, and the second end of the first wave modulation resistor 41 and the second end of the first wave modulation inductor 42 are electrically connected.

[0048] In one aspect of the embodiment, the multiple-output exponential wave generation circuit adopts a CRL discharge circuit.

[0049] Optionally, the resistance value of the distributed resistor 2 is 20mΩ, the inductance value of the load inductor 3 is 3uH, the resistance value of the first wave modulation resistor 41 is 2.5Ω, and the inductance value of the first wave modulation inductor 42 is 1uH. Further, please refer to Figure 3 The peak value of the output current of the exponential wave generation circuit of the embodiment is greater than 50kA.

[0050] The implementation principle of the embodiment 1 is that when the exponential wave waveform output of a large load inductance is achieved, when the maximum load inductance (i.e. the load inductor 3) of the wave modulation circuit is 3uH, the first wave modulation resistor 41 is 2.5Ω, and the distributed resistor 2 of the circuit is 20mΩ, an A wave exponential wave waveform of more than 50kA can be output, which meets the requirement of the output waveform 6.4 / 69us, and the output waveform conforms to the form of the exponential wave.

[0051] Embodiment 2

[0052] Please refer to the SAE5412 standard shown in the embodiment 1, and refer to Figure 4 In the case where the waveform output parameter includes a current peak value greater than 30kA and a waveform of a 6.4 / 69us exponential wave, the wave modulation circuit 4 includes a second wave modulation resistor 43, a second wave modulation inductor 44, and a first parallel wave modulation branch; the input end of the wave modulation circuit 4 corresponds to the first end of the second wave modulation resistor 43, the output end of the wave modulation circuit 4 corresponds to the first end of the second wave modulation inductor 44, the second end of the second wave modulation resistor 43 and the second end of the second wave modulation inductor 44 are electrically connected; the first end of the first parallel wave modulation branch is connected to the output end of the wave modulation circuit 4, and the second end of the first parallel wave modulation branch is grounded.

[0053] The first parallel wave-shaping branch includes a parallel wave-shaping resistor 45 and a parallel wave-shaping inductor 46; a first end of the parallel wave-shaping inductor 46 corresponds to a first end of the first parallel wave-shaping branch, a second end of the parallel wave-shaping inductor 46 is electrically connected with a first end of the parallel wave-shaping resistor 45, and a second end of the parallel wave-shaping resistor 45 corresponds to a second end of the first parallel wave-shaping branch.

[0054] The resistance value of the distributed resistor 2 is 20 mΩ, the inductance value of the load inductor 3 is 5 uH, the resistance value of the second wave-shaping resistor 43 is 2.5 Ω, the inductance value of the second wave-shaping inductor 44 is 1 uH, the resistance value of the parallel wave-shaping resistor 45 is 20 mΩ, and the inductance value of the parallel wave-shaping inductor 46 is 5 uH. Further, please refer to Figure 5 The peak value of the output current of the exponential wave generation circuit of the embodiment is greater than 30 kA, and the output waveform conforms to the form of an exponential wave.

[0055] The implementation principle of the embodiment 2 is that, when the load inductance (i.e., the load inductor 3) of the wave-shaping circuit is 5 uH, the second wave-shaping resistor 43 is 2.5 Ω, the distributed resistor 2 is 20 mΩ, and the parallel wave-shaping inductor 45 is 5 uH, an A-wave exponential wave waveform with a peak value greater than 30 kA can be output, which meets the requirement of the output waveform 6.4 / 69 us.

[0056] Embodiment 3

[0057] For special products such as communication and railway, the output waveform is required to be 10 / 1000 us, the general pulse amplitude is 100 kA, and an output overdamped exponential wave is generally required. The typical waveform is a 10 / 1000 us waveform, i.e., the wave front time T1 is 10 us, and the half-peak wave tail time T2 is 1000 us. This waveform is a double exponential waveform, and the circuit resistance for generating such a waveform is small, and the waveform peak value is 100 kA±10 kA.

[0058] Therefore, in order to meet the requirements of the above-mentioned special products such as communication and railway, please refer to Figure 6 In the case that the waveform output parameters include a current peak value greater than 100 kA and an exponential wave with a waveform of 10 / 1000 us, the wave-shaping circuit 4 includes a third wave-shaping resistor 47 and a second parallel wave-shaping branch. The input end of the wave-shaping circuit 4 corresponds to the first end of the third wave-shaping resistor 47, and the output end of the wave-shaping circuit 4 corresponds to the second end of the third wave-shaping resistor 47. The first end of the second parallel wave-shaping branch is connected to the output end of the wave-shaping circuit 4, and the second end of the second parallel wave-shaping branch is grounded.

[0059] The second parallel wave modulation branch includes a Crowbar switch 48, the positive pole of the Crowbar switch 48 is connected to the ground, and the negative pole of the Crowbar switch 48 is connected to the output end of the wave modulation circuit 4. The Crowbar switch 48 can achieve the function of prolonging the discharge time based on the discharge process of the power supply capacitor 1 to the load inductor 3. For example, during the discharge process of the discharge capacitor 1, the Crowbar switch 48 is triggered to be closed to prevent current from passing through the Crowbar switch 48, thereby achieving rapid discharge. For example, after the power supply capacitor 1 is charged to a preset voltage, the distributed resistance 2, the load inductor 3 and the wave modulation circuit 4 are connected in series to form a loop. The power supply capacitor 1 starts to discharge, and during the discharge process, when the output current reaches a preset peak value, the Crowbar switch 48 is closed, thereby achieving rapid discharge.

[0060] The resistance value of the distributed resistance 2 is 8 mΩ, the inductance value of the load inductor 3 is 10 uH, and the resistance value of the third wave modulation resistance 47 is 1 Ω. Further, please refer to Figure 7 The peak value of the output current of the exponential wave generation circuit of the embodiment is greater than 100 kA, and the output waveform conforms to the form of an exponential wave.

[0061] The implementation principle of the embodiment 3 is that when the 10 / 1000 us waveform output is achieved, the Crowbar switch 48 is used, the circuit uses a 40 uf power supply capacitor 1, the resistance value of the third wave modulation resistance 47 is 1 Ω, and when the inductance value (i.e. the load inductor 3) of the circuit is 10 uH, the 10 / 1000 us wave with a maximum of 100 kA or more can be output by the power supply capacitor 1 charged to 140 kV.

[0062] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in the specification (including the abstract and the drawings) can be replaced by other equivalent or similar features unless specifically described. That is, each feature is only an example of a series of equivalent or similar features unless specifically described.

Claims

1. A multiple output exponential wave generating circuit, characterized by comprising: The power supply capacitor (1), the distributed resistance (2), the load inductor (3) and the wave modulation circuit (4); the positive electrode of the power supply capacitor (1) is electrically connected with the input end of the wave modulation circuit (4), and the negative electrode of the power supply capacitor (1) is grounded; the output end of the wave modulation circuit (4) is electrically connected with the first end of the distributed resistance (2), the second end of the distributed resistance (2) is electrically connected with the first end of the load inductor (3), and the second end of the load inductor (3) is grounded; the output current of the exponential wave generation circuit conforms to the exponential wave waveform, and the output current is the current passing through the distributed resistance (2); the wave modulation circuit (4) is used for adjusting the corresponding circuit design according to the waveform output parameter of the output current.

2. The multiple output exponential wave generating circuit according to claim 1, wherein In the case that the waveform output parameter includes an exponential wave with a current peak value greater than 50kA and a waveform of 6.4 / 69us, the wave modulation circuit (4) includes a first wave modulation resistance (41) and a first wave modulation inductor (42); the input end of the wave modulation circuit (4) corresponds to the first end of the first wave modulation resistance (41), the output end of the wave modulation circuit (4) corresponds to the first end of the first wave modulation inductor (42), and the second end of the first wave modulation resistance (41) is electrically connected with the second end of the first wave modulation inductor (42).

3. The multiple output exponential wave generating circuit according to claim 2, wherein The resistance value of the distributed resistance (2) is 20mΩ, the inductance value of the load inductor (3) is 3uH, the resistance value of the first wave modulation resistance (41) is 2.5Ω, and the inductance value of the first wave modulation inductor (42) is 1uH.

4. The multiple output exponential wave generating circuit according to claim 1, wherein In the case that the waveform output parameter includes an exponential wave with a current peak value greater than 30kA and a waveform of 6.4 / 69us, the wave modulation circuit (4) includes a second wave modulation resistance (43), a second wave modulation inductor (44) and a first parallel wave modulation branch; the input end of the wave modulation circuit (4) corresponds to the first end of the second wave modulation resistance (43), the output end of the wave modulation circuit (4) corresponds to the first end of the second wave modulation inductor (44), and the second end of the second wave modulation resistance (43) is electrically connected with the second end of the second wave modulation inductor (44); the first end of the first parallel wave modulation branch is connected to the output end of the wave modulation circuit (4), and the second end of the first parallel wave modulation branch is grounded.

5. The multiple output exponential wave generating circuit according to claim 4, wherein The first parallel wave modulation branch includes a parallel wave modulation resistance (45) and a parallel wave modulation inductor (46); the first end of the parallel wave modulation inductor (46) corresponds to the first end of the first parallel wave modulation branch, the second end of the parallel wave modulation inductor (46) is electrically connected with the first end of the parallel wave modulation resistance (45), and the second end of the parallel wave modulation resistance (45) corresponds to the second end of the first parallel wave modulation branch.

6. The multiple output exponential wave generating circuit according to claim 5, wherein The resistance value of the distributed resistance (2) is 20mΩ, the inductance value of the load inductor (3) is 5uH, the resistance value of the second wave modulation resistance (43) is 2.5Ω, the inductance value of the second wave modulation inductor (44) is 1uH, the resistance value of the parallel wave modulation resistance (45) is 20mΩ, and the inductance value of the parallel wave modulation inductor (46) is 5uH.

7. The multiple output exponential wave generating circuit according to claim 1, wherein In the case that the waveform output parameter includes a current peak value greater than 100kA and an exponential waveform of 10 / 1000us, the waveform adjusting circuit (4) includes a third waveform adjusting resistor (47) and a second parallel waveform adjusting branch, an input end of the waveform adjusting circuit (4) corresponds to a first end of the third waveform adjusting resistor (47), and an output end of the waveform adjusting circuit (4) corresponds to a second end of the third waveform adjusting resistor (47); a first end of the second parallel waveform adjusting branch is connected to the output end of the waveform adjusting circuit (4), and a second end of the second parallel waveform adjusting branch is grounded.

8. The multiple output exponential wave generating circuit according to claim 7, wherein The second parallel waveform adjusting branch includes a Crowbar switch (48), a positive electrode of the Crowbar switch (48) is grounded, and a negative electrode of the Crowbar switch (48) is connected to the output end of the waveform adjusting circuit (4).

9. The multiple output exponential wave generating circuit according to claim 8, wherein The resistance value of the distributed resistor (2) is 8mΩ, the inductance value of the load inductor (3) is 10uH, and the resistance value of the third waveform adjusting resistor (47) is 1Ω.

10. The multiple output exponential wave generating circuit according to claim 1, wherein The capacitance value of the power supply capacitor (1) is 40uF.

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