CN201051716Y - An integrated electrode peak voltage absorption and voltage clamp circuit - Google Patents
An integrated electrode peak voltage absorption and voltage clamp circuit Download PDFInfo
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- CN201051716Y CN201051716Y CNU2007201103867U CN200720110386U CN201051716Y CN 201051716 Y CN201051716 Y CN 201051716Y CN U2007201103867 U CNU2007201103867 U CN U2007201103867U CN 200720110386 U CN200720110386 U CN 200720110386U CN 201051716 Y CN201051716 Y CN 201051716Y
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Abstract
The utility model relates to an electron collector crest voltage absorption and voltage clamp-on circuit, wherein an L1 and an L2 are a main coil and a secondary coil in a transformer B, the L2 is connected in series with D01 and is connected with an accumulator, a diode D3 is connected between the L1 and an electron collector of a transistor T1, and the diode D3 is connected in series with a capacitance C4 and then is connected in parallel with the L1. A resistance R3, a voltage stabilization diode ZD2, and a resistance R4 are respectively connected in series and are connected in parallel with the capacitance C4, the grid electrode of a field effect amplifier tube T2 is connected between the resistance C4 and the voltage stabilization diode ZD2, the drain of the field effect amplifier tube T2 is connected between the resistance R3 and the voltage stabilization diode ZD2, and the source polarity of the field effect amplifier tube T2 is connected with the resistance R4 and the capacitance C4. The beneficial effect is that when the load is changed suddenly, the utility model discharges the energy which is stored in the L1 coil through the absorption of the relatively big capacitance C4 and through the constant voltage big current flow of the field effect amplifier tube T2 and, and the frequency is variable, and the circuit is stable and reliable and the absorption consumption is the smallest adopting the method of absorption of relatively big capacitance and constant voltage clamp-on absorption of discharging electric quantity in constant voltage.
Description
Technical field
The utility model relates to peak pressure and absorbs and voltage clamp circuit, mainly is that a kind of collector electrode peak pressure absorbs and voltage clamp circuit.
Background technology
Original technology as shown in Figure 1, after driving pulse is added in transistor T 1 grid, transistor T 1 conducting, power supply V+ gives the L1 energy storage by coil L, transistor T 1; When driving pulse stopped, transistor T 1 turn-offed, and is stored in the most of energy among the coil L1, discharges accumulators by coil L2, diode D01; But the self induction electromotive force crest voltage that produces because of coil L1 leakage field is very high, jeopardize transistor T 1, must select for use one group of absorption circuit that the peak pressure that L1 produces is absorbed.Select for use fixed RC to absorb circuit in the past and absorbed peak pressure, R, the bad selection of C parameter in more powerful anti exciting converter, when C selects too greatly, R reduces thereupon, and the energy of normally strikeing back conversion also can be absorbed by C and release from R, makes it loss and strengthens, heating increases, C selects too hour, and the B point voltage still will get on, and is difficult to reach the requirement of high reliability.
The utility model content
The utility model will solve above-mentioned existing shortcoming, provides a kind of collector electrode peak pressure to absorb and voltage clamp circuit.
The utility model solves the technical scheme that its technical problem adopts: this collector electrode peak pressure absorbs and voltage clamp circuit, L1 and L2 are the masters among the transformer B, secondary coil, coil L2 serial connection D01 is connected with storage battery, diode D3 is connected between the collector electrode of coil L1 and transistor T 1, diode D3 be connected in parallel on the coil L1 after capacitor C 4 is connected, resistance R 3, voltage stabilizing didoe ZD2, resistance R 4 is connected in parallel on the capacitor C 4 after connecting successively, the grid of fet power pipe T2 is connected between resistance R 4 and the voltage stabilizing didoe ZD2, fet power pipe T2 drain electrode is connected resistance R 3, between the voltage stabilizing didoe ZD2, fet power pipe T2 source electrode and resistance R 4, capacitor C 4 connects.
Capacitor C 3 one ends are connected on the tie point of diode D3, capacitor C 4 and resistance R 3, other end ground connection.
The effect that the utility model is useful is: 1, when load changing, the capacitor of 1-10nF is difficult to sponge the energy of the inverse peak voltage that transformer produces, absorption by big capacitor C 4, and level pressure heavy-current discharge that can be by transistor T 2 discharges the energy that is stored among the coil L1 (be originally and discharge by load); 2, the frequency of frequency sweep anti exciting converter described in the utility model is variable, scope is between 10-50KHZ, be difficult to select the RC of a reasonable set to absorb network to satisfy the circuit working needs, have only and adopt big electric capacity to absorb, level pressure discharges the method for the level pressure clamper absorption of electric weight, it is reliable and stable that circuit is obtained, and the absorption loss minimum.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of prior art;
Fig. 2 is a circuit theory schematic diagram of the present utility model;
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in the figure, this collector electrode peak pressure absorbs and voltage clamp circuit, L1 and L2 are the masters among the transformer B, secondary coil, coil L2 serial connection D01 is connected with storage battery, diode D3 is connected between the collector electrode of coil L1 and transistor T 1, diode D3 be connected in parallel on the coil L1 after capacitor C 4 is connected, resistance R 3, voltage stabilizing didoe ZD2, resistance R 4 is connected in parallel on the capacitor C 4 after connecting successively, the grid of fet power pipe T2 is connected between resistance R 4 and the voltage stabilizing didoe ZD2, fet power pipe T2 drain electrode is connected resistance R 3, between the voltage stabilizing didoe ZD2, fet power pipe T2 source electrode and resistance R 4, capacitor C 4 connects.Capacitor C 3 one ends are connected on the tie point of diode D3, capacitor C 4 and resistance R 3, other end ground connection.
Operation principle: after driving pulse is added in transistor T 1 grid, transistor T 1 conducting, power supply V+ gives the L1 energy storage by coil L, transistor T 1; When driving pulse stopped, transistor T 1 turn-offed, and is stored in the energy among the coil L1, discharges accumulators by coil L2, diode D01; The self induction electromotive force that coil L1 leakage field produces is absorbed by capacitor C 4 by diode D3, the C4 capacity big than big hundreds of times of general absorption circuit, can be located at μ F level and can absorb bigger peak pressure energy energy.When surpassing ZD2 voltage stabilizing value, C4 voltage just on resistance R 3, produces pressure drop to the power supply of transistor T 2 grids, transistor T 2 electric weight among the electric capacity C4 of just releasing, and the pulse voltage that is lower than clamp voltage can not be absorbed.
Clamp voltage is located at about 230V, even V+ voltage also unlikely transistor T 1 collector voltage when 370V surpasses 600V.This circuit, the voltage in counterattack conversion efficient transformation interval can not absorbed (below ZD2 voltage stabilizing value) by capacitor C 4, have only other just to be absorbed, and release by transistor T 2 by capacitor C 4 by the crest voltage that surpasses transistor T 1 predefined operating voltage that unusual factor produces.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (2)
1. a collector electrode peak pressure absorbs and voltage clamp circuit, L1 and L2 are the masters among the transformer B, secondary coil, coil L2 serial connection D01 is connected with storage battery, it is characterized in that: diode D3 is connected between the collector electrode of coil L1 and transistor T 1, diode D3 be connected in parallel on the coil L1 after capacitor C 4 is connected, resistance R 3, voltage stabilizing didoe ZD2, resistance R 4 is connected in parallel on the capacitor C 4 after connecting successively, the grid of fet power pipe T2 is connected between resistance R 4 and the voltage stabilizing didoe ZD2, fet power pipe T2 drain electrode is connected resistance R 3, between the voltage stabilizing didoe ZD2, fet power pipe T2 source electrode and resistance R 4, capacitor C 4 connects.
2. collector electrode peak pressure according to claim 1 absorbs and voltage clamp circuit, and it is characterized in that: capacitor C 3 one ends are connected on the tie point of diode D3, capacitor C 4 and resistance R 3, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201103867U CN201051716Y (en) | 2007-06-07 | 2007-06-07 | An integrated electrode peak voltage absorption and voltage clamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201103867U CN201051716Y (en) | 2007-06-07 | 2007-06-07 | An integrated electrode peak voltage absorption and voltage clamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051716Y true CN201051716Y (en) | 2008-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201103867U Expired - Fee Related CN201051716Y (en) | 2007-06-07 | 2007-06-07 | An integrated electrode peak voltage absorption and voltage clamp circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN201051716Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826720A (en) * | 2010-05-27 | 2010-09-08 | 中南大学 | Clamping absorption integrated circuit for two-stage matrix converter |
| CN101902126A (en) * | 2009-05-25 | 2010-12-01 | 同方威视技术股份有限公司 | Power supply device for sputter ion pumps |
| CN102565504A (en) * | 2010-11-09 | 2012-07-11 | 波音公司 | Sample and hold circuit for voltage measuring |
| CN101989330B (en) * | 2009-08-07 | 2013-01-09 | 上海华虹Nec电子有限公司 | High-frequency radio frequency identification device (RFID) tag circuit and chip |
| CN102565504B (en) * | 2010-11-09 | 2016-12-14 | 波音公司 | Cell telemetry sampling and hold amplifier |
| CN108809108A (en) * | 2018-07-26 | 2018-11-13 | 无锡光磊电子科技有限公司 | A kind of flyback power supply circuit with leakage inductance energy absorbing circuit |
| CN105892540B (en) * | 2014-11-04 | 2018-11-13 | 恩智浦美国有限公司 | Voltage clamp circuit |
| CN109067228A (en) * | 2018-08-06 | 2018-12-21 | 西北工业大学 | A kind of driver and printed circuit layout based on gallium nitride power device |
| CN110892623A (en) * | 2019-03-13 | 2020-03-17 | 深圳欣锐科技股份有限公司 | Active clamping circuit, manufacturing method thereof and active clamping system |
-
2007
- 2007-06-07 CN CNU2007201103867U patent/CN201051716Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902126A (en) * | 2009-05-25 | 2010-12-01 | 同方威视技术股份有限公司 | Power supply device for sputter ion pumps |
| CN101902126B (en) * | 2009-05-25 | 2013-05-22 | 同方威视技术股份有限公司 | Power supply device for sputter ion pumps |
| CN101989330B (en) * | 2009-08-07 | 2013-01-09 | 上海华虹Nec电子有限公司 | High-frequency radio frequency identification device (RFID) tag circuit and chip |
| CN101826720A (en) * | 2010-05-27 | 2010-09-08 | 中南大学 | Clamping absorption integrated circuit for two-stage matrix converter |
| CN101826720B (en) * | 2010-05-27 | 2012-07-11 | 中南大学 | Clamping absorption integrated circuit for two-stage matrix converter |
| CN102565504A (en) * | 2010-11-09 | 2012-07-11 | 波音公司 | Sample and hold circuit for voltage measuring |
| CN102565504B (en) * | 2010-11-09 | 2016-12-14 | 波音公司 | Cell telemetry sampling and hold amplifier |
| CN105892540B (en) * | 2014-11-04 | 2018-11-13 | 恩智浦美国有限公司 | Voltage clamp circuit |
| CN108809108A (en) * | 2018-07-26 | 2018-11-13 | 无锡光磊电子科技有限公司 | A kind of flyback power supply circuit with leakage inductance energy absorbing circuit |
| CN109067228A (en) * | 2018-08-06 | 2018-12-21 | 西北工业大学 | A kind of driver and printed circuit layout based on gallium nitride power device |
| CN110892623A (en) * | 2019-03-13 | 2020-03-17 | 深圳欣锐科技股份有限公司 | Active clamping circuit, manufacturing method thereof and active clamping system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20160607 |