CN204068898U - A kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal - Google Patents
A kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal Download PDFInfo
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- CN204068898U CN204068898U CN201420538907.9U CN201420538907U CN204068898U CN 204068898 U CN204068898 U CN 204068898U CN 201420538907 U CN201420538907 U CN 201420538907U CN 204068898 U CN204068898 U CN 204068898U
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- 229910052708 sodium Inorganic materials 0.000 claims abstract description 5
- 239000011734 sodium Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
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Abstract
The utility model discloses a kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal, comprise high tension voltage regulated power supply, high-pressure sodium signal generating circuit second, duty ratio is adjustable square-wave generator and circuit of output terminal, described high tension voltage regulated power supply is connected with the power supply positive and negative terminal of described high-voltage nanosecond signal generating circuit, and the signal input part of described duty ratio is adjustable square-wave generator is connected with high-voltage nanosecond signal generating circuit input by differential circuit.Described circuit of output terminal is connected with snowslide transistor collector in high-voltage nanosecond generative circuit through match circuit.Compared with prior art, the utility model circuit is simple, and the pulse signal of generation is stable and amplitude is adjustable, adjustable pulse width, circuit, through trial-production, can obtain reasonable effect, if add frequency selection circuit, also can produce amplitude sine wave, there is the value promoted the use of.
Description
Technical field
The utility model relates to a kind of electron product circuit, particularly relates to a kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal.
Background technology
The pulse signal of high-voltage nanosecond level, has purposes more widely, as ground penetrating radar, biological cell decline, geologic prediction, Laser Power Devices etc. have been widely used in scientific experiment research.At present, use pulse signal to drive high-speed high-power switching tube method to produce the pulse of high-voltage nanosecond level, have very high requirement to power tube, and with high costs.If use sparkover method, can high voltage pulse be produced, but pulsewidth, and Waveform Control is more difficult, the pulse that gas spark switch produces is comparatively large with power, but volume is comparatively large, and equipment is complicated, uses magnetic switch, and same volume is comparatively large, and cost is higher.
Utility model content
The purpose of this utility model is just to use the avalanche characteristic additional peripheral common apparatus of avalanche transistor solve the problem and provide a kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises high tension voltage regulated power supply, high-pressure sodium signal generating circuit second, duty ratio is adjustable square-wave generator and circuit of output terminal, described high tension voltage regulated power supply is connected with the power supply positive and negative terminal of described high-voltage nanosecond signal generating circuit, the signal output part of described duty ratio is adjustable square-wave generator is connected with high-voltage nanosecond signal generating circuit by differential circuit, and described circuit of output terminal is connected with avalanche transistor collector electrode.
Above-mentioned physical circuit is by electric capacity C1, C2, resistance R1, R2, R3 and triode, one end of described resistance R1 is connected with positive source, with one end of described resistance R3 while of power cathode, one end of described resistance R2 is connected with the emitter of described triode, the other end of described resistance R1 is connected with the collector electrode of described triode and one end of described electric capacity C1 simultaneously, the other end of described electric capacity C1 is connected with the other end of described resistance R3 and is the signal output part of described avalanche transistor, the base stage of described triode is connected with the other end of described resistance R2 and one end of described electric capacity C2 simultaneously, the other end of described electric capacity C2 is the signal input part of described avalanche transistor.
Particularly, described triode is the avalanche transistor such as model 2N3033, ZTX415, FMMT417,3DB series.
The beneficial effects of the utility model are:
The utility model is a kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal, compared with prior art, the utility model circuit is simple, the pulse signal produced is stable and amplitude is adjustable, adjustable pulse width, and circuit is through trial-production, reasonable effect can be obtained, if add frequency selection circuit, also can produce amplitude sine wave, there is the value promoted the use of.
Accompanying drawing explanation
Fig. 1 is circuit structure theory diagram of the present utility model;
Fig. 2 is the utility model circuit structure schematic diagram;
Fig. 3 is the circuit structure schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model the utility model comprises high tension voltage regulated power supply, high-pressure sodium signal generating circuit second, duty ratio is adjustable square-wave generator and circuit of output terminal, described high tension voltage regulated power supply is connected with the power supply positive and negative terminal of described high-voltage nanosecond signal generating circuit, and the signal output part of described duty ratio is adjustable square-wave generator is by being connected with high-voltage nanosecond signal generating circuit with the differential circuit of resistant series by electric capacity.The match circuit that described circuit of output terminal forms through L6 with L7 is connected with snowslide transistor collector in high-voltage nanosecond generative circuit.Regulate adjustable DC high pressure and add to pulse generator, the avalanche transistor that triode Q is formed is in critical condition, now input input square-wave signal, through differential circuit, trigger triode enters avalanche condition, produce high-voltage pulse signal, because output signal spectrum enriches, output signal through output impedance matching.As shown in Figure 2: specifically by electric capacity C1, C2, resistance R1, R2, the triode Q of R3 and model 2N3033, one end of resistance R1 is connected with positive source VCC, with one end of resistance R3 while of power cathode GND, one end of resistance R2 is connected with the emitter of triode Q, the other end of resistance R1 is connected with the collector electrode of triode Q and one end of electric capacity C1 simultaneously, the other end of electric capacity C1 is connected with the other end of resistance R3 and is the signal output part of avalanche transistor, the base stage of triode Q is connected with the other end of resistance R2 and one end of electric capacity C2 simultaneously, the other end of electric capacity C2 is the signal input part of avalanche transistor.
As shown in Figure 2: when energized, Q is in cut-off state, and electric current is charged to C1 by R1, R3, when C1 both end voltage rises to critical closure state, extraneous pulse arrives, and by C2, R2 differential circuit, produces spike triggering Q and enters avalanche condition, C1 electric charge is immediately by the electric discharge of Q, R3 loop, when C1 both end voltage be discharged to be not enough to puncture Q time, Q recovers cut-off state, and power supply charges to C1 again, repeat said process, and then produce high-frequency and high-voltage burst pulse.Changing C1, R3 numerical value can the regulation output deration of signal and amplitude.
Embodiment:
As shown in Figure 3: circuit is by 1000 volts of VCC power inputs, and input is function generator signal input trigger end, and output is 50 ohm of pulse signal output ends, and has more pair of terminal to oscilloscope, when being convenient to work, monitoring output parameter.Q1 and R1 in circuit, R2 forms constant-current circuit, ensure not burn out other pipes because electric current is excessive in circuit working, resistance R10-R15 forms equalizer circuit, ensure that electric voltage equalization penetrated by 6 2N3033 collection, R4-R8 forms triode auto bias circuit, the size of this resistance has influence on, avalanche breakdown voltage, the micro-inductance of L1-L5 is serially connected in base radio road, during guarantee avalanche condition, each pipe is stable, the pipe being operated in avalanche condition is Q2---Q7, C5, R9 forms differential circuit, produce spike triggering Q7 and enter avalanche condition, be stored in electric capacity C1-C4, the electric charge of C6 passes through Q2-Q7, Q8, R16, R17 discharges, form nanosecond pulse, wherein Q8 plays blocking effect, ensure C1-C4, C6 discharges end of a period, when being not enough to puncture Q2-Q7, truncated signal, ensure the pure of output signal, L6, L7 is micro-band inductance, ensure hf and hv pulse and the load matched of output, do not produce reflection.Wherein 4 sections of toggle switchs, can select the electric capacity quantity participating in electric discharge, and then regulate electric discharge pulsewidth and amplitude, and when capacitance increases, pulsewidth broadens, amplitude increases, otherwise, then pulsewidth narrow, amplitude reduction.When supply voltage significantly regulates, when supply voltage is away from snowslide pipe puncture voltage, by regulating K1-K4 tetra-short circuit caps, can ensure that supply voltage is coordinated mutually with pipe puncture voltage.
Manufacturing process: adopt the accurate regulated power supply one of 6 2N3033 triodes, finished product 1000V1A, finished product function generator one designed and produced an adjustable pulse width, the pulse generator of the nanosecond that amplitude is adjustable, uses the object of finished product to be omitted loaded down with trivial details power supply, drive singal design.Before the use, need to select, method is triode, pipe is placed in 200 degrees Celsius of insulating boxs and toasts 24 hours, carry out burin-in process, after taking out cooling, with transistor curve tracer contrast test between two in half an hour, the pipe that selectivity characteristic is consistent, eliminates nonconforming triode.
The foregoing describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal, it is characterized in that: comprise high tension voltage regulated power supply, high-pressure sodium signal generating circuit second, duty ratio is adjustable square-wave generator and circuit of output terminal, described high tension voltage regulated power supply is connected with the power supply positive and negative terminal of described high-voltage nanosecond signal generating circuit, the signal output part of described duty ratio is adjustable square-wave generator is connected with high-voltage nanosecond signal generating circuit input by differential circuit, described circuit of output terminal is connected with snowslide transistor collector in high-voltage nanosecond generative circuit through match circuit.
2. a kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal according to claim 1, it is characterized in that: described high tension voltage regulated power supply, high-pressure sodium signal generating circuit second, duty ratio is adjustable square-wave generator and circuit of output terminal, specifically by electric capacity C1, C2, resistance R1, R2, R3 and triode, one end of described resistance R1 is connected with positive source, with one end of described resistance R3 while of power cathode, one end of described resistance R2 is connected with the emitter of described triode, the other end of described resistance R1 is connected with the collector electrode of described triode and one end of described electric capacity C1 simultaneously, the other end of described electric capacity C1 is connected with the other end of described resistance R3 and is the signal output part of described avalanche transistor, the base stage of described triode is connected with the other end of described resistance R2 and one end of described electric capacity C2 simultaneously, the other end of described electric capacity C2 is the signal input part of described avalanche transistor.
3. a kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal according to claim 1, is characterized in that: described triode is the avalanche transistor such as model 2N3033, ZTX415, FMMT417,3DB series.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538907.9U CN204068898U (en) | 2014-09-18 | 2014-09-18 | A kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal |
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| CN201420538907.9U CN204068898U (en) | 2014-09-18 | 2014-09-18 | A kind of circuit using avalanche transistor to produce high-voltage nanosecond level pulse signal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898946A (en) * | 2017-01-20 | 2017-06-27 | 华东师范大学 | For the turnable pulse width formula pulse generating circuit of semiconductor laser |
| CN110247644A (en) * | 2019-06-26 | 2019-09-17 | 清华大学 | Micro EDM nanosecond pulse power supply based on avalanche transistor |
| CN112713797A (en) * | 2020-12-02 | 2021-04-27 | 清华大学 | Cascaded regulation nanosecond pulse power supply based on double avalanche triodes and control method thereof |
-
2014
- 2014-09-18 CN CN201420538907.9U patent/CN204068898U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898946A (en) * | 2017-01-20 | 2017-06-27 | 华东师范大学 | For the turnable pulse width formula pulse generating circuit of semiconductor laser |
| CN110247644A (en) * | 2019-06-26 | 2019-09-17 | 清华大学 | Micro EDM nanosecond pulse power supply based on avalanche transistor |
| WO2020258640A1 (en) * | 2019-06-26 | 2020-12-30 | 清华大学 | Avalanche triode-based nanosecond pulse power supply for micro electric discharge machining |
| CN112713797A (en) * | 2020-12-02 | 2021-04-27 | 清华大学 | Cascaded regulation nanosecond pulse power supply based on double avalanche triodes and control method thereof |
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Effective date of registration: 20151029 Address after: 230601 Anhui University, 111 Jiulong Road, Hefei economic and Technological Development Zone, Anhui Patentee after: Anhui University Address before: 236061 Anhui University, No. 111 Jiulong Road, Hefei, Anhui Patentee before: Wang Diebing Patentee before: Lu Feng Patentee before: Hu Bangjun |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150918 |
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| EXPY | Termination of patent right or utility model |