CN203422693U - Direct-current voltage stabilizing circuit - Google Patents
Direct-current voltage stabilizing circuit Download PDFInfo
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- CN203422693U CN203422693U CN201320457907.1U CN201320457907U CN203422693U CN 203422693 U CN203422693 U CN 203422693U CN 201320457907 U CN201320457907 U CN 201320457907U CN 203422693 U CN203422693 U CN 203422693U
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- voltage regulator
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Abstract
The utility model discloses a direct-current voltage stabilizing circuit which can provide stable direct-current voltage for a load. The direct-current voltage stabilizing circuit comprises an emitter following device, a negative feedback module, a voltage regulating module and a filtering module, wherein the negative feedback module is respectively connected with the emitter following device and the voltage regulating module, the voltage regulating module is connected with the filtering module and the emitter following device, the emitter following module is used for increasing input impedance, the negative feedback module is used for stabilizing output voltage, and the voltage regulating module is used for precisely regulating the output voltage, and the filtering module is used for filtering the output voltage. The direct-current voltage stabilizing circuit can provide stable direct-current voltage, the circuit is simple in structure, radiating is facilitated, maintenance is easy, and the service life is longer.
Description
Technical field
The utility model relates to mu balanced circuit field, relates to particularly a kind of direct current regulation circuit.
Background technology
Mu balanced circuit is when input voltage, load, environment temperature, circuit parameter etc. change, still to keep the constant circuit of output voltage, mu balanced circuit can provide galvanic current to press, and is therefore widely used in various electronic equipments.Existing mu balanced circuit is mainly voltage stabilizing chip, but voltage stabilizing chip cooling ability is poor, fragile, and easy-maintaining not after damaging, be difficult to change, life-span is shorter, in addition, and the internal circuit more complicated of voltage stabilizing chip, be not easy to carry out personalization according to user's request and revise, the more inapplicable circuit not high to accuracy requirement.
Utility model content
The utility model embodiment provides a kind of direct current regulation circuit, can press for load provides galvanic current.
The utility model embodiment provides a kind of direct current regulation circuit, comprising:
Penetrate with module, negative feedback module, Voltage Regulator Module and filtration module, wherein, described negative feedback module is connected with described penetrating with module, described Voltage Regulator Module respectively, described Voltage Regulator Module and described filtration module, described in penetrate with module and be connected;
Described penetrating with module for improving input impedance, described negative feedback module is for regulated output voltage, and described Voltage Regulator Module is for the size of fine adjustment output voltage, and described filtration module is for by output voltage filtering.
As a kind of optional embodiment, described in penetrate with module and comprise: the first triode, the first resistance;
The collector of described the first triode is connected with one end, the circuit input end of described the first resistance simultaneously, the base stage of described the first triode is connected with the other end and the described negative feedback module of described the first resistance, and the emitter of described the first triode is connected with described Voltage Regulator Module.
As a kind of optional embodiment, described negative feedback module comprises: the second triode;
The collector of described the second triode is connected with described penetrating with module, and the base stage of described the second triode is connected with described Voltage Regulator Module, the grounded emitter of described the second triode.
As a kind of optional embodiment, described Voltage Regulator Module comprises: the second resistance, the 3rd resistance;
One end of described the second resistance is connected with one end of described the 3rd resistance, and the other end is connected with described filtration module, the other end ground connection of described the 3rd resistance.
As a kind of optional embodiment, described filtration module comprises: the first electric capacity, the second electric capacity;
One end of described the first electric capacity is connected with described Voltage Regulator Module, circuit output end simultaneously, the other end of described the first electric capacity is connected with described Voltage Regulator Module, one end of described the second electric capacity is connected with one end, the circuit output end of described the first electric capacity simultaneously, the other end ground connection of described the second electric capacity.
The beneficial effect of the utility model embodiment:
The utility model embodiment can provide galvanic current to press, and circuit structure is simple, is convenient to heat radiation, for ease of maintenaince, and longer service life.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of direct current regulation circuit structured flowchart that the utility model embodiment provides;
Fig. 2 is a kind of direct current regulation circuit schematic diagram that the utility model embodiment provides.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, it is a kind of direct current regulation circuit structured flowchart that the utility model embodiment provides, be to be understood that, the utility model embodiment can be used for needing the electronic equipment of powered by direct current, and the direct current regulation circuit in the utility model embodiment comprises: penetrate with module 10, negative feedback module 20, Voltage Regulator Module 30 and filtration module 40.Wherein, being connected with described penetrating with module 10, described Voltage Regulator Module 30 respectively of described negative feedback module 20, described Voltage Regulator Module 30 and described filtration module 40, described in penetrate with module and be connected.
Described penetrating with module 10 for improving input impedance, described negative feedback module 20 is for regulated output voltage, and described Voltage Regulator Module 30 is for the size of fine adjustment output voltage, and described filtration module 40 is for by output voltage filtering.
The utility model embodiment can provide galvanic current to press, and circuit structure is simple, is convenient to heat radiation, for ease of maintenaince, increases the serviceable life of the utility model embodiment.
Referring to Fig. 2, is a kind of direct current regulation circuit schematic diagram that the utility model embodiment provides, and the direct current regulation circuit in the utility model embodiment comprises: penetrate with module 10, negative feedback module 20, Voltage Regulator Module 30 and filtration module 40.
Penetrate with module 10 for improving input impedance, comprising: the first triode Q1 and the first resistance R 1,
The collector C utmost point of described the first triode Q1 is connected with one end, the circuit input end Vin of described the first resistance R 1 simultaneously, the base stage B of described the first triode Q1 is connected with the collector of the other end of described the first resistance R 1, the second triode Q2 in negative feedback module 20 simultaneously, and the emitter E of described the first triode Q1 is connected with one end of the second resistance R 2 in Voltage Regulator Module 30.
Be to be understood that, after the first triode Q1 conducting, the collector voltage of the first triode Q1 approximates its base voltage, is input voltage vin, and the first triode Q1 is equivalent to emitter follower, there is input impedance large, the feature that output impedance is little, the output voltage V out=Vin-Vbe of the utility model embodiment direct current regulation circuit, due to the first triode Q1 conducting, Vbe is very little, therefore the output voltage V out ≈ input voltage vin of the first triode Q1.
The collector C of described the second triode Q2 is connected with described base stage of penetrating with the first triode Q1 in module 10, the base stage B while of described the second triode Q2 is connected with the other end of the second resistance R 2 in Voltage Regulator Module 30, one end of the 3rd resistance R 3, the emitter E ground connection of described the second triode Q2.
What need to know is, the second triode Q2 is equivalent to comparer, and the base stage B of the second triode Q2 is equivalent to (-) end of comparer, and comparative voltage is output voltage V out, the emitter E of the second triode Q2 is equivalent to (+) end of comparer, and comparative voltage is Vbe.
Therefore, negative feedback is by the difference of output voltage and reference voltage, feeds back to the base stage B of emitter follower the first triode Q1, thereby reaches the object of regulation output voltage, makes to be changed and the voltage fluctuation that produces in circuit reduces by load current.
Described second resistance R 2 other ends are connected with one end of described the 3rd resistance R 3, the other end ground connection of described the 3rd resistance R 3.
The second resistance R 2 and the 3rd resistance R 3 act as dividing potential drop, therefore, the second resistance R 2 and the 3rd resistance R 3 need to be selected the precision resistance that degree of accuracy is higher, output voltage V out=［ (R2+R3)/R3 ］ * Vbe.
One end while of the first capacitor C 1 is connected with one end, the circuit output end Vout of the second resistance R 2 in described Voltage Regulator Module 30, the other end of described the first capacitor C 1 is connected with one end of the 3rd resistance R 3 in described Voltage Regulator Module 30, one end of described the second capacitor C 2 is connected with one end, the circuit output end Vout of described the first capacitor C 1 simultaneously, the other end ground connection of described the second capacitor C 2.
Be to be understood that, the first capacitor C 1 and the second capacitor C 2 mainly play the effect of filtering, meanwhile, the first capacitor C 1 also plays the effect that reduces the AC impedance between circuit input end Vin and the second triode Q2, and the second capacitor C 2 also plays the effect of the AC impedance that reduces output end vo ut.
Certainly, in other embodiment of the present utility model, penetrate with module 10, negative feedback module 20, Voltage Regulator Module 30 and filtration module 40 and can use multiple electronic devices and components to realize, the utility model does not limit.
Need to know, because the utility model embodiment direct current regulation circuit all adopts resolution element, the area of dissipation of circuit be increased, convenient maintenance and replacement, cost is lower, longer service life.
The utility model embodiment direct current regulation circuit can be used for providing the tap voltage of network transformer.
Above disclosed is only the utility model preferred embodiment, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belongs to the scope that the utility model is contained.
Claims (5)
1. a direct current regulation circuit, is characterized in that, comprising:
Penetrate with module, negative feedback module, Voltage Regulator Module and filtration module, wherein, described negative feedback module is connected with described penetrating with module, described Voltage Regulator Module respectively, described Voltage Regulator Module and described filtration module, described in penetrate with module and be connected;
Described penetrating with module for improving input impedance, described negative feedback module is for regulated output voltage, and described Voltage Regulator Module is for the size of fine adjustment output voltage, and described filtration module is for by output voltage filtering.
2. circuit as claimed in claim 1, is characterized in that,
Described penetrating with module comprises: the first triode, the first resistance;
The collector of described the first triode is connected with one end, the circuit input end of described the first resistance simultaneously, the base stage of described the first triode is connected with the other end and the described negative feedback module of described the first resistance, and the emitter of described the first triode is connected with described Voltage Regulator Module.
3. circuit as claimed in claim 1, is characterized in that,
Described negative feedback module comprises: the second triode;
The collector of described the second triode is connected with described penetrating with module, and the base stage of described the second triode is connected with described Voltage Regulator Module, the grounded emitter of described the second triode.
4. circuit as claimed in claim 1, is characterized in that,
Described Voltage Regulator Module comprises: the second resistance, the 3rd resistance;
One end of described the second resistance is connected with one end of described the 3rd resistance, and the other end is connected with described filtration module, the other end ground connection of described the 3rd resistance.
5. circuit as claimed in claim 1, is characterized in that,
Described filtration module comprises: the first electric capacity, the second electric capacity;
One end of described the first electric capacity is connected with described Voltage Regulator Module, circuit output end simultaneously, the other end of described the first electric capacity is connected with described Voltage Regulator Module, one end of described the second electric capacity is connected with one end, the circuit output end of described the first electric capacity simultaneously, the other end ground connection of described the second electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457907.1U CN203422693U (en) | 2013-07-30 | 2013-07-30 | Direct-current voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457907.1U CN203422693U (en) | 2013-07-30 | 2013-07-30 | Direct-current voltage stabilizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422693U true CN203422693U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320457907.1U Expired - Fee Related CN203422693U (en) | 2013-07-30 | 2013-07-30 | Direct-current voltage stabilizing circuit |
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| Country | Link |
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| CN (1) | CN203422693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392703A (en) * | 2014-12-02 | 2015-03-04 | 京东方科技集团股份有限公司 | Voltage stabilizing circuit, control method and display device thereof |
| CN104868476A (en) * | 2015-05-26 | 2015-08-26 | 青岛菲特电器科技有限公司 | Low voltage stabilization voltage regulator |
-
2013
- 2013-07-30 CN CN201320457907.1U patent/CN203422693U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392703A (en) * | 2014-12-02 | 2015-03-04 | 京东方科技集团股份有限公司 | Voltage stabilizing circuit, control method and display device thereof |
| CN104392703B (en) * | 2014-12-02 | 2016-08-24 | 京东方科技集团股份有限公司 | A kind of mu balanced circuit and control method, display device |
| CN104868476A (en) * | 2015-05-26 | 2015-08-26 | 青岛菲特电器科技有限公司 | Low voltage stabilization voltage regulator |
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| 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 |
Granted publication date: 20140205 Termination date: 20150730 |
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| EXPY | Termination of patent right or utility model |