CN202615259U - Current expansion device for three-end adjustable voltage stabilization block - Google Patents
Current expansion device for three-end adjustable voltage stabilization block Download PDFInfo
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- CN202615259U CN202615259U CN 201220292450 CN201220292450U CN202615259U CN 202615259 U CN202615259 U CN 202615259U CN 201220292450 CN201220292450 CN 201220292450 CN 201220292450 U CN201220292450 U CN 201220292450U CN 202615259 U CN202615259 U CN 202615259U
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Abstract
The utility model belongs to the fields of electronic technologies and power source technologies, and relates to a current expansion device for a three-end adjustable voltage stabilization block. The device consists of a direct current power supply, a power filter circuit, a voltage stabilization circuit and a sampling, amplification and voltage stabilization output circuit, and is characterized in that the type of a three-end adjustable integrated voltage stabilizer IC1 in the voltage stabilization circuit is LM317. A low-power three-end integrated voltage stabilizer has low voltage stabilization output current and cannot meet the requirement on actual power; and although a high-power voltage stabilization integrated module or a switching power supply which is professional and high in performance can be selected in the market, the high-power voltage stabilization integrated module or the switching power supply is high in price and is difficultly accepted by non-professionals. By the current expansion device for the three-end adjustable voltage stabilization block, the problems can be solved. The current expansion device for the three-end adjustable voltage stabilization block has the characteristics of simple circuit structure, flexibility and convenience in use, stable working performance, low manufacturing cost and the like.
Description
Technical field
The utility model belongs to electronic technology and power technique fields, is to enlarge current device about the adjustable regulator block of a kind of three ends.
Background technology
The general voltage stabilizing output current of miniwatt three terminal integrated voltage stabilizer itself is little; As: three terminal integrated voltage stabilizer self voltage regulation load electric current is many at 0.5～1.5A; If its load current is extended to 10A, the output current of available 0.5～1.5A drives 1 or many large power triode expansion stream that enlargement factor is big and parameter is consistent and can solve.
Though the high-power voltage stabilizing integration module or the Switching Power Supply of professional use, function admirable can be selected for use on the market, their ubiquity prices are high, the problem such as beyond affordability of general amateur purposes.Described three ends of the utility model are adjustable, and regulator block expansion current device can remedy and overcome these problems.The utlity model has that circuit structure is succinct, flexible and convenient to use, characteristics such as stable work in work, cost of manufacture are low.
Below specify the adjustable regulator block of described three ends of the utility model and enlarge current device related relevant technologies content in implementation process.
The utility model content
Goal of the invention and beneficial effect: the general voltage stabilizing output current of miniwatt three terminal integrated voltage stabilizer itself is little; Be difficult to satisfy the real power needs; Though the high-power voltage stabilizing integration module or the Switching Power Supply of professional use, function admirable can be selected for use on the market, their ubiquity prices are high, the problem such as beyond affordability of general amateur purposes.Described three ends of the utility model are adjustable, and regulator block expansion current device can remedy and overcome these problems.The utlity model has that circuit structure is succinct, flexible and convenient to use, characteristics such as stable work in work, cost of manufacture are low.
The circuit working principle: the circuit that described three ends of the utility model are adjustable regulator block enlarges current device is when solving load current greater than three end adjustable voltage-regulating ic device nominal current values, solves the technology of big electric current voltage stabilizing with the way that enlarges electric current.When circuit can expand electric current to 4A with 1 positive-negative-positive large power triode (3AD53); If when enlarging electric current and still not reaching big technical requirement; Optional two or many positive-negative-positive large power triode parallel connection uses; As: the electric current that three end adjustable voltage-regulating ic device IC1 (LM317) can only provide is 1.0A, present embodiment inserts 2 positive-negative-positive large power triodes (3AD53) in mu balanced circuit after, can the voltage stabilizing output current be extended to 8A; Resistance R 1 is a sample resistance, also is the biasing resistor of positive-negative-positive large power triode VT1～VT2.
Technical scheme: three ends are adjustable, and regulator block enlarges current device, and it is made up of dc power supply and electric source filter circuit, mu balanced circuit, sampling amplification and voltage-stabilizing output circuit, and its characteristic comprises:
Mu balanced circuit: form by three end adjustable voltage-regulating ic device IC1, linear potentiometer RP and resistance R 1; The model that three end adjustable voltage-regulating ic device IC1 select for use is LM317; The input end (the 3rd pin) of three end adjustable voltage-regulating ic device IC1 meets the anodal VCC of dc power supply; The adjustment end of three end adjustable voltage-regulating ic device IC1 (the 1st pin ADJ) links to each other with the end of linear potentiometer RP and an end of resistance R 2; The other end of linear potentiometer RP and lever arm connection circuit ground GND thereof, the other end and the burning voltage output terminal Vout of output terminal (the 2nd pin) the connecting resistance R2 of three end adjustable voltage-regulating ic device IC1;
Sampling is amplified and voltage-stabilizing output circuit: be made up of positive-negative-positive large power triode VT1～VT2, sample resistance R1; The input end (the 3rd pin) of three end adjustable voltage-regulating ic device IC1 connects the base stage of positive-negative-positive large power triode VT2 and the end of sample resistance R1; The emitter of positive-negative-positive large power triode VT2 connects the base stage of positive-negative-positive large power triode VT1; The collector of the collector of positive-negative-positive large power triode VT1 and positive-negative-positive large power triode VT2 meets output terminal (the 2nd pin) and the burning voltage output terminal Vout of three end adjustable voltage-regulating ic device IC1, the anodal VCC of the emitter of positive-negative-positive large power triode VT1 and another termination dc power supply of sample resistance R1;
The negative pole of dc power supply links to each other with circuit ground GND.
Description of drawings
Embodiment
Enlarge the circuit working schematic diagram and the description of drawings of current device according to the adjustable regulator block of three ends shown in the accompanying drawing 1; And according to the annexation between the components and parts in the said circuit of utility model content, and the components and parts technical parameter described in the embodiment requires to implement to realize the utility model.
The selection of components and parts and technical parameter thereof
The component parameter of following embodiment is an example with voltage stabilizing output current 8A:
IC1 is three end adjustable voltage-regulating ic devices, and the model of selecting for use is LM317;
VT1, VT2 are the positive-negative-positive large power triode, require dissipated power 20W, IC (A) >=4A, and β >=80, the model of selecting for use is 3AD53, the technical parameter that requires VT1, VT2 is consistent as far as possible, and must add heating radiator as VT1, VT2 when requiring to use;
Resistance is all selected metalfilmresistor for use, and R1 is a sample resistance, and its resistance is 5.1 Ω, and power is 3W; The resistance of resistance R 2 is 240 Ω, and power is 1/4W;
The resistance of linear potentiometer RP is 3.6K Ω, and the model of selecting for use is WH9-K1.
Circuit production main points and circuit debugging method
It is intact to require the adjustable regulator block of three ends to enlarge the electronic devices and components performance of selecting for use in the current device circuit; And the annexation of components and parts is welded in the accompanying drawing 1 to specifications; After physical connection line and welding quality process scrutiny were errorless, circuit need not debugged basically and get final product operate as normal;
Regulator block expansion current device circuit belongs to serial regulating circuit because three ends are adjustable, thus require the input voltage value of direct supply and the pressure reduction between the voltage stabilizing output voltage values to exceed more than the 3.5V, otherwise will influence the voltage stabilizing output effect; Change the resistance of circuit neutral line potentiometer RP, can adjust the output valve of burning voltage;
When using positive-negative-positive large power triode 3AD53 and three end adjustable voltage-regulating ic device LM317, be necessary for them and install the enough big heating radiator of size additional;
Attention: the technical parameter of positive-negative-positive large power triode 3AD53 is more consistent, helps reducing the power attenuation of direct supply more; Otherwise positive-negative-positive large power triode 3AD53 technical parameter is discrete more, and the power attenuation of direct supply will be bigger than normal.
Claims (1)
1. the adjustable regulator block of end enlarges current device, and it is made up of dc power supply and electric source filter circuit, mu balanced circuit, sampling amplification and voltage-stabilizing output circuit, and its characteristic comprises:
Mu balanced circuit is made up of three end adjustable voltage-regulating ic device IC1, linear potentiometer RP and resistance R 1; The model that three end adjustable voltage-regulating ic device IC1 select for use is LM317; The input end (the 3rd pin) of three end adjustable voltage-regulating ic device IC1 meets the anodal VCC of dc power supply; The adjustment end of three end adjustable voltage-regulating ic device IC1 (the 1st pin ADJ) links to each other with the end of linear potentiometer RP and an end of resistance R 2; The other end of linear potentiometer RP and lever arm connection circuit ground GND thereof, the other end and the burning voltage output terminal Vout of output terminal (the 2nd pin) the connecting resistance R2 of three end adjustable voltage-regulating ic device IC1;
Sampling is amplified and voltage-stabilizing output circuit is made up of positive-negative-positive large power triode VT1～VT2, sample resistance R1; The input end (the 3rd pin) of three end adjustable voltage-regulating ic device IC1 connects the base stage of positive-negative-positive large power triode VT2 and the end of sample resistance R1; The emitter of positive-negative-positive large power triode VT2 connects the base stage of positive-negative-positive large power triode VT1; The collector of the collector of positive-negative-positive large power triode VT1 and positive-negative-positive large power triode VT2 meets output terminal (the 2nd pin) and the burning voltage output terminal Vout of three end adjustable voltage-regulating ic device IC1, the anodal VCC of the emitter of positive-negative-positive large power triode VT1 and another termination dc power supply of sample resistance R1;
The negative pole of dc power supply links to each other with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292450 CN202615259U (en) | 2012-06-20 | 2012-06-20 | Current expansion device for three-end adjustable voltage stabilization block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292450 CN202615259U (en) | 2012-06-20 | 2012-06-20 | Current expansion device for three-end adjustable voltage stabilization block |
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| Publication Number | Publication Date |
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| CN202615259U true CN202615259U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220292450 Expired - Fee Related CN202615259U (en) | 2012-06-20 | 2012-06-20 | Current expansion device for three-end adjustable voltage stabilization block |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707758A (en) * | 2012-06-20 | 2012-10-03 | 朱虹 | Current enlarging device of three-end adjustable voltage stabilizing block |
| CN105652948A (en) * | 2014-11-17 | 2016-06-08 | 上海岭芯微电子有限公司 | LDO external expansion circuit and method for manufacturing LDO external expansion structure thereof |
-
2012
- 2012-06-20 CN CN 201220292450 patent/CN202615259U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707758A (en) * | 2012-06-20 | 2012-10-03 | 朱虹 | Current enlarging device of three-end adjustable voltage stabilizing block |
| CN105652948A (en) * | 2014-11-17 | 2016-06-08 | 上海岭芯微电子有限公司 | LDO external expansion circuit and method for manufacturing LDO external expansion structure thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20130620 |