CN204065896U - A kind of mu balanced circuit - Google Patents
A kind of mu balanced circuit Download PDFInfo
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- CN204065896U CN204065896U CN201420501102.7U CN201420501102U CN204065896U CN 204065896 U CN204065896 U CN 204065896U CN 201420501102 U CN201420501102 U CN 201420501102U CN 204065896 U CN204065896 U CN 204065896U
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- triode
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Abstract
The utility model discloses a kind of mu balanced circuit, comprise the positive port of VIN, VIN negative terminal mouth and triode Q1; One end of described VIN positive port contact resistance R1 and one end of electric capacity C1; The collector of the other end connecting triode Q2 of described resistance R1; One end of the other end contact resistance R8 of described electric capacity C1, other end one end of contact resistance R9 and the base stage of triode Q1 simultaneously of resistance R8; The emitter of the other end connecting triode Q1 of described resistance R9, one end of the collector contact resistance R3 of triode Q1, the other end of resistance R3 connects the negative pole of diode D1 and the collector of triode Q2 simultaneously, and the base stage of the collector of triode Q1 also simultaneously connecting triode Q2; Described triode Q1 TVS pipe D2 and electric capacity C6 in parallel; The voltages keep constant that the utility model exports, realize step-down and voltage regulation result, and each element all adopts general electronic devices and components, production cost is very low.
Description
Technical field
The utility model relates to circuit field, specifically a kind of mu balanced circuit.
Background technology
Along with making rapid progress of electronic product, the requirement of various electronic product to direct supply is also more and more higher, and low input dc power presses to main flow, and therefore, DC voltage step-down conversion is essential.DC decompression voltage stabilizing scheme is very many, current main flow be LDO(low pressure difference linear voltage regulator) and DC/DC(DC-to-DC converter) these two kinds of lowering and stabilizing blood pressure schemes.But most LDO and DC/DC step-down scenario-frame is very complicated.And in some application scenarios, only need simple lowering and stabilizing blood pressure function, if still unnecessary waste wherein just certainly will be caused with such circuit, and very high cost can be caused, make the production cost of electronic product be difficult to be effectively controlled.
Utility model content
The purpose of this utility model is to provide a kind of mu balanced circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of mu balanced circuit, comprises the positive port of VIN, VIN negative terminal mouth and triode Q1; One end of described VIN positive port contact resistance R1 and one end of electric capacity C1; The collector of the other end connecting triode Q2 of described resistance R1; One end of the other end contact resistance R8 of described electric capacity C1, other end one end of contact resistance R9 and the base stage of triode Q1 simultaneously of resistance R8; The emitter of the other end connecting triode Q1 of described resistance R9, one end of the collector contact resistance R3 of triode Q1, the other end of resistance R3 connects the negative pole of diode D1 and the collector of triode Q2 simultaneously, and the base stage of the collector of triode Q1 also simultaneously connecting triode Q2; Described triode Q1 TVS pipe D2 and electric capacity C6 in parallel; The described emitter of triode Q1 and the plus earth of TVS pipe D2; The emitter of described triode Q2 is connected with electric capacity C4, electric capacity C5 and electric capacity C7; Described electric capacity C4 and electric capacity C5 is in parallel, and ground connection; The emitter of described triode Q2 also one end of contact resistance R4 and one end of resistance R6 simultaneously, the other end of resistance R4 is connected with resistance R5 one end, with collector, the base stage of triode Q4, the base stage of triode Q5 of triode Q3 while of the other end of resistance R5; The base stage of the other end connecting triode Q3 of resistance R6, the grounded emitter of triode Q3, the collector of triode Q5 passes through the emitter of electric capacity C2, electric capacity C3 connecting triode Q4, and the emitter of triode Q4 ground connection simultaneously; The collector of the emitter connecting triode Q4 of described triode Q5, and its terminals also connect VIN negative terminal mouth simultaneously.
Further, described electric capacity C4 is electrochemical capacitor.
Further, described electric capacity C5 is electrochemical capacitor or ceramic disc capacitor.
Compared with prior art, the utility model embodiment adopts triode as voltage drop element, and coordinates stabilivolt, and the voltage that triode is exported keeps stable.When load power consumption changes, the electric current of change can be synchronized to the electric current on the base stage of triode and stabilivolt, because triode operation is in amplification region, therefore load power consumption changes the current change quantity that produces after triode regulates, the voltages keep constant of output can be made, realize step-down and voltage regulation result, and each element all adopts general electronic devices and components, production cost is very low.
Accompanying drawing explanation
Fig. 1 is the structural representation of mu balanced circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of mu balanced circuit, comprises the positive port of VIN, VIN negative terminal mouth and triode Q1; One end of described VIN positive port contact resistance R1 and one end of electric capacity C1; The collector of the other end connecting triode Q2 of described resistance R1; One end of the other end contact resistance R8 of described electric capacity C1, other end one end of contact resistance R9 and the base stage of triode Q1 simultaneously of resistance R8; The emitter of the other end connecting triode Q1 of described resistance R9, one end of the collector contact resistance R3 of triode Q1, the other end of resistance R3 connects the negative pole of diode D1 and the collector of triode Q2 simultaneously, and the base stage of the collector of triode Q1 also simultaneously connecting triode Q2; Described triode Q1 TVS pipe D2 and electric capacity C6 in parallel; The described emitter of triode Q1 and the plus earth of TVS pipe D2; The emitter of described triode Q2 is connected with electric capacity C4, electric capacity C5 and electric capacity C7; Described electric capacity C4 and electric capacity C5 is in parallel, and ground connection, electric capacity C4 is electrochemical capacitor, and electric capacity C5 is electrochemical capacitor or ceramic disc capacitor; The emitter of described triode Q2 also one end of contact resistance R4 and one end of resistance R6 simultaneously, the other end of resistance R4 is connected with resistance R5 one end, with collector, the base stage of triode Q4, the base stage of triode Q5 of triode Q3 while of the other end of resistance R5; The base stage of the other end connecting triode Q3 of resistance R6, the grounded emitter of triode Q3, the collector of triode Q5 passes through the emitter of electric capacity C2, electric capacity C3 connecting triode Q4, and the emitter of triode Q4 ground connection simultaneously; The collector of the emitter connecting triode Q4 of described triode Q5, and its terminals also connect VIN negative terminal mouth simultaneously.
In work, high voltage direct current is after resistance R3 dividing potential drop, flow into the base stage of triode Q2, because base stage to be connected with TVS pipe D2 ground connection afterwards, therefore, the current potential of base stage by TVS pipe D2 clamper in a fixed value, its base stage keeps high level, triode Q2 conducting, and high voltage direct current is through the output of triode Q2, and select the sizeable stabilivolt of burning voltage, make the current potential of base stage remain on the scope making triode Q2 be operated in amplification region; Desirable electric capacity connect transient voltage can not suddenly change, thus can not there is power attenuation, in circuit also would not emergent power vibration phenomenon.But in fact, because the material manufacturing electric capacity has resistance, the insulating medium of electric capacity is lossy, a variety of causes causes electric capacity to become not " ideal ", this loss shows as just as a resistance follows capacitances in series together in outside, power all consumes on this resistance, this resistance is called ESR(equivalent series resistance), less ESR can make the moment that circuit is being connected produce self-sustained oscillation, there is good filtering voltage regulation effect, therefore, under normal circumstances, for electric capacity, ESR is the smaller the better, and the electrochemical capacitor electric capacity that to be at present conventional ESR smaller.The present embodiment is in order to boostfiltering effect, set up electric capacity C5, this electric capacity C5 and electric capacity C4 is arranged in parallel, simultaneously, the electric capacity C6 be also arranged in parallel at the two ends of TVS pipe D2, play the effect of buffering, direct-flow input end connects moment, electric capacity C6 enters charged state, the voltage of triode Q2 base stage progressively raises, when after electric capacity C6 charging complete, the current potential of base stage reaches the highest, the namely stable voltage of TVS pipe D2, electric capacity C6 becomes a buffer capacitor, make DC output end OUT place can not produce vibration because of current break, thus reach voltage regulation result, triode Q1 is as switching tube, be arranged in parallel with TVS pipe D2, particularly, its collector 5 is connected with the base stage of triode Q2, grounded emitter, base stage is for inputting outside control signal, when control signal is high level, input end and output terminal conducting, when control signal is low level, input end and output terminal turn off, when control signal is low level, triode Q1 ends, the base stage of triode Q2 is in noble potential, in conducting state, when the control signal goes high, triode Q1 conducting, the base stage of triode Q2 is pulled to low level, triode Q2 ends.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a mu balanced circuit, comprises the positive port of VIN, VIN negative terminal mouth and triode Q1; It is characterized in that, one end of described VIN positive port contact resistance R1 and one end of electric capacity C1; The collector of the other end connecting triode Q2 of described resistance R1; One end of the other end contact resistance R8 of described electric capacity C1, other end one end of contact resistance R9 and the base stage of triode Q1 simultaneously of resistance R8; The emitter of the other end connecting triode Q1 of described resistance R9, one end of the collector contact resistance R3 of triode Q1, the other end of resistance R3 connects the negative pole of diode D1 and the collector of triode Q2 simultaneously, and the base stage of the collector of triode Q1 also simultaneously connecting triode Q2; Described triode Q1 TVS pipe D2 and electric capacity C6 in parallel; The described emitter of triode Q1 and the plus earth of TVS pipe D2; The emitter of described triode Q2 is connected with electric capacity C4, electric capacity C5 and electric capacity C7; Described electric capacity C4 and electric capacity C5 is in parallel, and ground connection; The emitter of described triode Q2 also one end of contact resistance R4 and one end of resistance R6 simultaneously, the other end of resistance R4 is connected with resistance R5 one end, with collector, the base stage of triode Q4, the base stage of triode Q5 of triode Q3 while of the other end of resistance R5; The base stage of the other end connecting triode Q3 of resistance R6, the grounded emitter of triode Q3, the collector of triode Q5 passes through the emitter of electric capacity C2, electric capacity C3 connecting triode Q4, and the emitter of triode Q4 ground connection simultaneously; The collector of the emitter connecting triode Q4 of described triode Q5, and its terminals also connect VIN negative terminal mouth simultaneously.
2. mu balanced circuit according to claim 1, is characterized in that, described electric capacity C4 is electrochemical capacitor.
3. mu balanced circuit according to claim 1, is characterized in that, described electric capacity C5 is electrochemical capacitor or ceramic disc capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501102.7U CN204065896U (en) | 2014-09-02 | 2014-09-02 | A kind of mu balanced circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501102.7U CN204065896U (en) | 2014-09-02 | 2014-09-02 | A kind of mu balanced circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204065896U true CN204065896U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420501102.7U Expired - Fee Related CN204065896U (en) | 2014-09-02 | 2014-09-02 | A kind of mu balanced circuit |
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| Country | Link |
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| CN (1) | CN204065896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110111615A (en) * | 2019-04-09 | 2019-08-09 | 广西俊锦科技有限公司 | Multimedia education system |
-
2014
- 2014-09-02 CN CN201420501102.7U patent/CN204065896U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110111615A (en) * | 2019-04-09 | 2019-08-09 | 广西俊锦科技有限公司 | Multimedia education 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: 20141231 Termination date: 20160902 |