CN205335832U - Asymmetric clamper module circuit - Google Patents
Asymmetric clamper module circuit Download PDFInfo
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- CN205335832U CN205335832U CN201620085608.3U CN201620085608U CN205335832U CN 205335832 U CN205335832 U CN 205335832U CN 201620085608 U CN201620085608 U CN 201620085608U CN 205335832 U CN205335832 U CN 205335832U
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- audion
- operational amplifier
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Abstract
The utility model discloses an asymmetric clamper module circuit relates to clamp circuit technical field, including first triode, second triode, an operational amplifier and the 2nd operational amplifier, the base of first triode is connected to the one end of first electric capacity and an operational amplifier's output, the projecting pole of first triode is connected to the other end of load voltage output, first electric capacity and an operational amplifier's reverse input end, an operational amplifier's positive going input end is first magnitude of voltage output promptly, the base of second triode is connected to the output of second operation amplifier, the projecting pole of second triode is connected to the reverse input end of load voltage output and second operation amplifier, and the reverse input end of second operation amplifier is second magnitude of voltage output, the beneficial effects are that: the flexibility is strong, and the precision is high, can accurate protection load not receive the excessive pressure to overflow the impact.
Description
Technical field
This utility model relates to circuit engineering field, and in particular, this utility model relates to a kind of asymmetric clamper modular circuit。
Background technology
Clamp circuit (clampingcircuit) is certain part of pulse signal to be fixed in given voltage value, and keeps the circuit of original waveform shape invariance。Clamp circuit is frequently used in various display device。Making the DC component of scanning signal be restored with clamp circuit in oscillograph and radarscope, image location on-screen caused during to solve scanning speed change moves problem。Television system make the lock-out pulse top of composite video signal be maintained on fixing voltage with clamp circuit, to overcome owing to losing the level fluctuation that the reason such as DC component or interference causes, thus realizing the separation of TV synchronousing signal。
In four-quadrant power supply, protection load is most important。It is low to there is precision in early stage restriction load voltage and current technique, and instability easily occurs, not program-controlled, motility deficiency etc. feature, it is impossible to meet the demand of high-end industrial equipment。
Utility model content
The purpose of this utility model is in that to overcome the deficiency of above-mentioned technology, it is provided that a kind of asymmetric clamper modular circuit, and asymmetric clamper modular circuit motility is strong, precision is high for this, can accurately protect load not impacted by over-voltage and over-current。
The technical solution of the utility model is achieved in that a kind of asymmetric clamper modular circuit, and it thes improvement is that: include the first audion, the second audion, the first operational amplifier and the second operational amplifier；
The colelctor electrode of described first audion is connected to earth terminal；The base stage of the first audion is connected to one end of the second resistance, and the other end of the second resistance is connected to one end of the first electric capacity and the outfan of the first operational amplifier；The emitter stage of the first audion is connected to load voltage outfan and one end of the first resistance, and the other end of described first resistance and the other end of the first electric capacity are simultaneously connected with the reverse input end at the first operational amplifier after connecting；Being connected to the 3rd resistance on the positive input of described first operational amplifier, the other end of the 3rd resistance is the first magnitude of voltage outfan；
The colelctor electrode of described second audion is connected to earth terminal；The base stage of the second audion is connected to one end of the 5th resistance, and the other end of the 5th resistance is connected to the outfan of the second operational amplifier；The emitter stage of the second audion is connected to load voltage outfan and one end of the 7th resistance, the other end of the 7th resistance is connected to the reverse input end of the second operational amplifier, the reverse input end of described second operational amplifier is also connected with one end of the 8th resistance, the other end of described 8th resistance is the second magnitude of voltage outfan, and the positive input of described second operational amplifier is connected to earth terminal；The second electric capacity is also set up between outfan and the emitter stage of the second audion of described second operational amplifier。
In above-mentioned circuit structure, described first audion is NPN type triode；Described second audion is PNP type triode。
In above-mentioned circuit structure, the reverse input end of described first operational amplifier being also connected with the 4th resistance, the other end of described 4th resistance is connected to earth terminal。
In above-mentioned circuit structure, being provided with the first diode between colelctor electrode and the earth terminal of described first audion, the positive pole of described first diode is connected to the colelctor electrode of the first audion, and the negative pole of the first diode is connected to earth terminal。
Further, it is provided with the second diode between colelctor electrode and the earth terminal of described second audion, the positive pole of the second diode and the negative pole of the first diode are connected to earth terminal after being electrically connected, and the negative pole of the second diode and the colelctor electrode of the second audion are electrically connected。
In above-mentioned circuit structure, it is additionally provided with the 3rd diode between emitter stage and the load voltage outfan of described first audion, the negative pole end of the 3rd diode and the emitter stage of the first audion are electrically connected, and the positive terminal of the 3rd diode is connected to load voltage outfan。
Further, the 4th diode is also set up between emitter stage and the load voltage outfan of described second audion；The positive terminal of the 4th diode is connected to the emitter stage of the second audion, and the negative pole end of the 4th diode is connected to load voltage outfan。
In above-mentioned circuit structure, described first operational amplifier has voltage input end, and voltage input end voltage is 15V。
In above-mentioned circuit structure, described second operational amplifier has voltage input end, and voltage input end voltage is 15V。
The beneficial effects of the utility model are: by above-mentioned circuit structure, and when load voltage outfan VC voltage is less than pressure-limit current-limit value VA and VB time, the E terminal voltage of the first audion is VA voltage, and B end is 12.8V；The VBE of such first audion is reverse bias, and the first audion is not turned on, it does not have electric current flows into ground；When load voltage outfan VC voltage is more than pressure-limit current-limit value VA and VB time, the E terminal voltage of the first audion is VA voltage, and B end is always less than E end 0.5V；Such VBE is forward bias, the first triode ON, has electric current to flow into ground, thus playing the effect of exact restriction pressure limiting；Second audion U2 in like manner, asymmetric clamper modular circuit of the present utility model, this module stability, utilize computer program controlled, motility is strong, and precision is high, can accurately protect load not impacted by over-voltage and over-current。
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model。
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated。Should be appreciated that specific embodiment described herein is used only for explaining this utility model, be not used to limit this utility model。
With reference to shown in Fig. 1, structural representation for a kind of asymmetric clamper modular circuit that this utility model discloses, in this embodiment, described asymmetric clamper modular circuit includes the first audion U1, the second audion U2, the first operational amplifier U2A and the second operational amplifier U2B, concrete, in the present embodiment, as shown in Figure 1, described first audion U1 is NPN type triode, and described second audion U2 is PNP type triode；Described first operational amplifier U2A has voltage input end, and voltage input end voltage is 15V；Described second operational amplifier U2B has voltage input end, and voltage input end voltage is also 15V。
For the detailed construction of asymmetric clamper modular circuit, we will be herein described in detail, and the colelctor electrode of described first audion U1 is connected to earth terminal；The base stage of the first audion U1 is connected to one end of the second resistance R2, and the other end of the second resistance R2 is connected to one end of the first electric capacity C1 and the outfan of the first operational amplifier U2A；The emitter stage of the first audion U1 is connected to load voltage outfan VC and one end of the first resistance R1, and the other end of described first resistance R1 and the other end of the first electric capacity C1 are simultaneously connected with the reverse input end at the first operational amplifier U2A after connecting；Being connected to the 3rd resistance R3 on the positive input of described first operational amplifier U2A, the other end of the 3rd resistance R3 is the first magnitude of voltage outfan VA；It addition, be also connected with the 4th resistance R4 on the reverse input end of described first operational amplifier U2A, the other end of described 4th resistance R4 is connected to earth terminal。The colelctor electrode of described second audion U2 is connected to earth terminal；The base stage of the second audion U2 is connected to one end of the 5th resistance R5, and the other end of the 5th resistance R5 is connected to the outfan of the second operational amplifier U2B；The emitter stage of the second audion U2 is connected to one end of load voltage outfan VC and the 7th resistance R7, the other end of the 7th resistance R7 is connected to the reverse input end of the second operational amplifier U2B, the reverse input end of described second operational amplifier U2B is also connected with one end of the 8th resistance R8, the other end of described 8th resistance R8 is the second magnitude of voltage outfan VB, and the positive input of described second operational amplifier U2B is connected to earth terminal；The second electric capacity C2 is also set up between outfan and the emitter stage of the second audion U2 of described second operational amplifier U2B。
Further, the positive pole being provided with the first diode D1, described first diode D1 between colelctor electrode and the earth terminal of described first audion U1 is connected to the colelctor electrode of the first audion U1, and the negative pole of the first diode D1 is connected to earth terminal；It is provided with the second diode D2 between colelctor electrode and the earth terminal of described second audion U2, the positive pole of the second diode D2 and the negative pole of the first diode D1 are connected to earth terminal after being electrically connected, and the negative pole of the second diode D2 and the colelctor electrode of the second audion U2 are electrically connected。Further, it is additionally provided with the 3rd diode D3 between emitter stage and the load voltage outfan VC of described first audion U1, the negative pole end of the 3rd diode D3 and the emitter stage of the first audion U1 are electrically connected, and the positive terminal of the 3rd diode D3 is connected to load voltage outfan VC；The 4th diode D4 is also set up between emitter stage and the load voltage outfan VC of described second audion U2；The positive terminal of the 4th diode D4 is connected to the emitter stage of the second audion U2, and the negative pole end of the 4th diode D4 is connected to load voltage outfan VC。
By above-mentioned circuit structure, when load voltage outfan VC voltage is less than pressure-limit current-limit value VA and VB time, the E terminal voltage of the first audion U1 is VA voltage, and B end is 12.8V；The VBE of such first audion U1 is reverse bias, and the first audion U1 is not turned on, it does not have electric current flows into ground；When load voltage outfan VC voltage is more than pressure-limit current-limit value VA and VB time, the E terminal voltage of the first audion U1 is VA voltage, and B end is always less than E end 0.5V；The VBE of such U1 is forward bias, the first audion U1 conducting, has electric current to flow into ground, thus playing the effect of exact restriction pressure limiting。Other second audion U2 in like manner, no longer describes in detail。In sum, asymmetric clamper modular circuit of the present utility model, this module stability, utilize computer program controlled, motility is strong, and precision is high, can accurately protect load not impacted by over-voltage and over-current。
Described above is only preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model。In technological thought category of the present utility model, it is possible to various deformation and amendment occur, retouching, amendment or the equivalent replacement that all those of ordinary skill in the art make as described above, belong to the scope that this utility model is protected。
Claims (9)
1. an asymmetric clamper modular circuit, it is characterised in that: include the first audion, the second audion, the first operational amplifier and the second operational amplifier；
The colelctor electrode of described first audion is connected to earth terminal；The base stage of the first audion is connected to one end of the second resistance, and the other end of the second resistance is connected to one end of the first electric capacity and the outfan of the first operational amplifier；The emitter stage of the first audion is connected to load voltage outfan and one end of the first resistance, and the other end of described first resistance and the other end of the first electric capacity are simultaneously connected with the reverse input end at the first operational amplifier after connecting；Being connected to the 3rd resistance on the positive input of described first operational amplifier, the other end of the 3rd resistance is the first magnitude of voltage outfan；
The colelctor electrode of described second audion is connected to earth terminal；The base stage of the second audion is connected to one end of the 5th resistance, and the other end of the 5th resistance is connected to the outfan of the second operational amplifier；The emitter stage of the second audion is connected to load voltage outfan and one end of the 7th resistance, the other end of the 7th resistance is connected to the reverse input end of the second operational amplifier, the reverse input end of described second operational amplifier is also connected with one end of the 8th resistance, the other end of described 8th resistance is the second magnitude of voltage outfan, and the positive input of described second operational amplifier is connected to earth terminal；The second electric capacity is also set up between outfan and the emitter stage of the second audion of described second operational amplifier。
2. the asymmetric clamper modular circuit of one according to claim 1, it is characterised in that: described first audion is NPN type triode；Described second audion is PNP type triode。
3. the asymmetric clamper modular circuit of one according to claim 1, it is characterised in that: being also connected with the 4th resistance on the reverse input end of described first operational amplifier, the other end of described 4th resistance is connected to earth terminal。
4. the asymmetric clamper modular circuit of one according to claim 1, it is characterized in that: between colelctor electrode and the earth terminal of described first audion, be provided with the first diode, the positive pole of described first diode is connected to the colelctor electrode of the first audion, and the negative pole of the first diode is connected to earth terminal。
5. the asymmetric clamper modular circuit of one according to claim 4, it is characterized in that: between colelctor electrode and the earth terminal of described second audion, be provided with the second diode, the positive pole of the second diode and the negative pole of the first diode are connected to earth terminal after being electrically connected, and the negative pole of the second diode and the colelctor electrode of the second audion are electrically connected。
6. the asymmetric clamper modular circuit of one according to claim 1, it is characterized in that: between emitter stage and the load voltage outfan of described first audion, be additionally provided with the 3rd diode, the negative pole end of the 3rd diode and the emitter stage of the first audion are electrically connected, and the positive terminal of the 3rd diode is connected to load voltage outfan。
7. the asymmetric clamper modular circuit of one according to claim 6, it is characterised in that: also set up the 4th diode between emitter stage and the load voltage outfan of described second audion；The positive terminal of the 4th diode is connected to the emitter stage of the second audion, and the negative pole end of the 4th diode is connected to load voltage outfan。
8. the asymmetric clamper modular circuit of one according to claim 1, it is characterised in that: described first operational amplifier has voltage input end, and voltage input end voltage is 15V。
9. the asymmetric clamper modular circuit of one according to claim 1, it is characterised in that: described second operational amplifier has voltage input end, and voltage input end voltage is 15V。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620085608.3U CN205335832U (en) | 2016-01-28 | 2016-01-28 | Asymmetric clamper module circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620085608.3U CN205335832U (en) | 2016-01-28 | 2016-01-28 | Asymmetric clamper module circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205335832U true CN205335832U (en) | 2016-06-22 |
Family
ID=56320222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620085608.3U Expired - Fee Related CN205335832U (en) | 2016-01-28 | 2016-01-28 | Asymmetric clamper module circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205335832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110620412A (en) * | 2019-09-25 | 2019-12-27 | 上海类比半导体技术有限公司 | Minimum output selection circuit and battery charge-discharge circuit |
-
2016
- 2016-01-28 CN CN201620085608.3U patent/CN205335832U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110620412A (en) * | 2019-09-25 | 2019-12-27 | 上海类比半导体技术有限公司 | Minimum output selection circuit and battery charge-discharge circuit |
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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: 20160622 Termination date: 20200128 |