CN102938554A - High-power adjustable clamping circuit for automobile jammer - Google Patents
High-power adjustable clamping circuit for automobile jammer Download PDFInfo
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- CN102938554A CN102938554A CN2011102335595A CN201110233559A CN102938554A CN 102938554 A CN102938554 A CN 102938554A CN 2011102335595 A CN2011102335595 A CN 2011102335595A CN 201110233559 A CN201110233559 A CN 201110233559A CN 102938554 A CN102938554 A CN 102938554A
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Abstract
The invention relates to a high-power adjustable clamping circuit for an automobile jammer. The clamping circuit comprises a metal oxide semiconductor field effect transistor (MOSFET) drive module Us, an MOSFET Q1, a surge generator, a first resistance R1, a second resistance R2, a sampling resistance, a comparator, a triode Q2 and a given host, wherein the MOSFET Q1 is provided with a grid, a source and a drain, the grid is connected with the MOSFET drive module Us through the first resistance R1, the source is connected with the surge generator, and the drain is connected with the sampling resistance through the second resistance R2; the triode Q2 is provided with a base, a collector and an emitter, the base is connected with the comparator, the collector is connected between the MOSFET drive module Us and the first resistance R1, and the emitter is grounded; and the comparator is connected with the sampling resistance and the given host.
Description
Technical field
The present invention relates to a kind of clamp circuit, especially relate to a kind of high-power adjustable clamping circuit for the automobile interference unit.
Background technology
Clamp circuit is application circuit more common in the EMC industry, mainly is that the amplitude clamp with waveform is set to the Set arbitrarily value, can be from 0V to Set arbitrarily several hectovolts, and can guarantee waveform stablizing on any amplitude, smoothly, do not have burr, and can keep for a long time.
Prior art is to utilize some voltage-stabilizing devices to carry out voltage stabilizing, and one is that parameter is single, can not realize multistage seamless link, if another high pressure surpasses the limiting voltage of voltage-stabiliser tube, voltage-stabiliser tube will be breakdown, causes wave distortion.In addition, the speed ratio of surge generator is very fast, and certain destructiveness is arranged, and it also is one of the problem that will consider that the how to do well protection is unlikely to damage device.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of high-power adjustable clamping circuit for the automobile interference unit for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of high-power adjustable clamping circuit for the automobile interference unit is characterized in that, comprises metal-oxide-semiconductor driver module Us, metal-oxide-semiconductor Q1, surge generator, the first resistance R 1, the second resistance R 2, sampling resistor, comparator, triode Q2 and given main frame;
Described metal-oxide-semiconductor Q1 is provided with grid, source electrode, drain electrode, and its grid is connected with metal-oxide-semiconductor driver module Us by the first resistance R 1, and its source electrode is connected with surge generator, and its drain electrode is connected with sampling resistor by the second resistance R 2;
Described triode Q2 is provided with base stage, collector electrode, emitter, and its base stage is connected with comparator, and its collector electrode is connected between metal-oxide-semiconductor driver module Us and the first resistance R 1, its grounded emitter;
Described comparator is connected with sampling resistor, and described given main frame is connected with comparator.
Described metal-oxide-semiconductor Q1 is that a plurality of metal-oxide-semiconductors are formed in parallel.
Compared with prior art, the present invention has the following advantages:
1, can set free voltage, reach continuously adjustable.
2, can effectively accomplish high-power clamp, precision can control in the 0.5V, and without burr.
3, can do an integrated chip, as circuit brake, more obvious for some Millisecond broad pulse interference effects.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of high-power adjustable clamping circuit for the automobile interference unit comprises metal-oxide-semiconductor driver module Us, metal-oxide-semiconductor Q1, surge generator L, the first resistance R 1, the second resistance R 2, sampling resistor R, comparator B1, triode Q2 and given host B 2;
Described metal-oxide-semiconductor Q1 is provided with grid, source electrode, drain electrode, and its grid is connected with metal-oxide-semiconductor driver module Us by the first resistance R 1, and its source electrode is connected with surge generator L, and its drain electrode is connected with sampling resistor R by the second resistance R 2;
Described triode Q2 is provided with base stage, collector electrode, emitter, and its base stage is connected with comparator B1, and its collector electrode is connected between metal-oxide-semiconductor driver module Us and the first resistance R 1, its grounded emitter;
Described comparator B1 is connected with sampling resistor R, and described given host B 2 is connected with comparator B1.
Described metal-oxide-semiconductor Q1 is that a plurality of metal-oxide-semiconductors are formed in parallel, can be according to what of the energy quantification of electric current.The response time of control high-voltage control circuit is very fast at the nanosecond order of magnitude.Can make a response rapidly when having surge to flow through, protection device is unlikely to damage.
Operation principle: by sampling resistor, produce the small-signal feedback voltage.This feedback voltage is delivered to comparator, and feedback voltage compares with the given magnitude of voltage that given main frame sends again, turn-offs if equate then to control metal-oxide-semiconductor Q1, makes lower voltage, if on the low sidely metal-oxide-semiconductor Q1 is opened, Real Time Monitoring is controlled in real time so again.So can reach the function of voltage clamp, with the level of voltage stabilization a balance.
Claims (2)
1. a high-power adjustable clamping circuit that is used for the automobile interference unit is characterized in that, comprises metal-oxide-semiconductor driver module Us, metal-oxide-semiconductor Q1, surge generator, the first resistance R 1, the second resistance R 2, sampling resistor, comparator, triode Q2 and given main frame;
Described metal-oxide-semiconductor Q1 is provided with grid, source electrode, drain electrode, and its grid is connected with metal-oxide-semiconductor driver module Us by the first resistance R 1, and its source electrode is connected with surge generator, and its drain electrode is connected with sampling resistor by the second resistance R 2;
Described triode Q2 is provided with base stage, collector electrode, emitter, and its base stage is connected with comparator, and its collector electrode is connected between metal-oxide-semiconductor driver module Us and the first resistance R 1, its grounded emitter;
Described comparator is connected with sampling resistor, and described given main frame is connected with comparator.
2. a kind of high-power adjustable clamping circuit for the automobile interference unit according to claim 1 is characterized in that, described metal-oxide-semiconductor Q1 is that a plurality of metal-oxide-semiconductors are formed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102335595A CN102938554A (en) | 2011-08-15 | 2011-08-15 | High-power adjustable clamping circuit for automobile jammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102335595A CN102938554A (en) | 2011-08-15 | 2011-08-15 | High-power adjustable clamping circuit for automobile jammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102938554A true CN102938554A (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102335595A Pending CN102938554A (en) | 2011-08-15 | 2011-08-15 | High-power adjustable clamping circuit for automobile jammer |
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| CN (1) | CN102938554A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591115A (en) * | 2003-08-29 | 2005-03-09 | 罗姆股份有限公司 | Power supply apparatus |
| CN101056054A (en) * | 2007-02-12 | 2007-10-17 | 深圳安凯微电子技术有限公司 | DC-DC power conversion circuit |
| CN101123392A (en) * | 2006-08-09 | 2008-02-13 | 矽创电子股份有限公司 | Charge pump circuit without additional voltage stabilizer |
| CN101425755A (en) * | 2008-09-18 | 2009-05-06 | 上海三基电子工业有限公司 | Accurate voltage regulating and stabilizing device |
| CN201536253U (en) * | 2009-09-18 | 2010-07-28 | 深圳市同洲电子股份有限公司 | USB overcurrent detection and control circuit |
| CN202218197U (en) * | 2011-08-15 | 2012-05-09 | 上海普锐马电子有限公司 | High-power adjustable clamping circuit |
-
2011
- 2011-08-15 CN CN2011102335595A patent/CN102938554A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591115A (en) * | 2003-08-29 | 2005-03-09 | 罗姆股份有限公司 | Power supply apparatus |
| CN101123392A (en) * | 2006-08-09 | 2008-02-13 | 矽创电子股份有限公司 | Charge pump circuit without additional voltage stabilizer |
| CN101056054A (en) * | 2007-02-12 | 2007-10-17 | 深圳安凯微电子技术有限公司 | DC-DC power conversion circuit |
| CN101425755A (en) * | 2008-09-18 | 2009-05-06 | 上海三基电子工业有限公司 | Accurate voltage regulating and stabilizing device |
| CN201536253U (en) * | 2009-09-18 | 2010-07-28 | 深圳市同洲电子股份有限公司 | USB overcurrent detection and control circuit |
| CN202218197U (en) * | 2011-08-15 | 2012-05-09 | 上海普锐马电子有限公司 | High-power adjustable clamping circuit |
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Application publication date: 20130220 |