CN204203826U - The DC-stabilized circuit that a kind of output voltage is adjustable - Google Patents
The DC-stabilized circuit that a kind of output voltage is adjustable Download PDFInfo
- Publication number
- CN204203826U CN204203826U CN201420550092.6U CN201420550092U CN204203826U CN 204203826 U CN204203826 U CN 204203826U CN 201420550092 U CN201420550092 U CN 201420550092U CN 204203826 U CN204203826 U CN 204203826U
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- circuit
- output voltage
- terminal integrated
- adjustable
- resistance
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Abstract
The utility model relates to power-supply device technical field, the DC-stabilized circuit that especially a kind of output voltage is adjustable.It comprises for regulating circuit output voltage three terminal integrated voltage stabilizer, for make circuit output voltage have the soft starting circuit of a slow uphill process and for make circuit output voltage can from 0V continuously adjustable voltage compensating circuit.It is adjustable that the utility model adopts three terminal integrated voltage stabilizer to achieve output voltage, and utilize voltage compensating circuit and soft starting circuit solve well circuit output voltage from 0V continuously adjustabe and adapt to the problem of load-carrying startability, there is the advantage that structure is simple, cost is low, reliability is high.
Description
Technical field
The utility model relates to power-supply device technical field, the DC-stabilized circuit that especially a kind of output voltage is adjustable.
Background technology
D.C. regulated power supply is a kind of common electronic device, is widely used in the fields such as electronic circuit.Electronic circuit will normally work, the effect of power supply is very important, the quality of power source performance, very large on the impact such as serviceable life, usability of circuit, electronic device and electronic equipment, especially with in the circuit of inductive load and equipment (as motor), higher to the performance requirement of power supply.In the occasion of a lot of application direct current generator; require for motor-drive circuit provide its output can from 0V the direct supply of continuously adjustabe 0V ~ 24V; and requiring that power supply has defencive function, is in fact exactly require that design one has enough range of regulation and the strong DC-stabilized circuit of carrying load ability.
At present, the tandem DC-stabilized circuit of employing will realize output voltage continuously adjustabe from 0V need increase accessory power supply, circuit more complicated, and because circuit all adopts discrete component, the reliability of circuit is also difficult to ensure.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide that a kind of structure is simple, output voltage continuously adjustabe and the strong DC-stabilized circuit of carrying load ability from 0V.
To achieve these goals, the utility model adopts following technical scheme:
The DC-stabilized circuit that output voltage is adjustable, it comprise for regulating circuit output voltage three terminal integrated voltage stabilizer IC, for make circuit output voltage have the soft starting circuit of a slow uphill process and for make circuit output voltage can from 0V continuously adjustable voltage compensating circuit;
Described soft starting circuit comprises transistor T, resistance R, resistance R3 and capacitor C, and described voltage compensating circuit comprises resistance R4 and diode D;
The base stage bifurcation road of described transistor T, a branch road is connected to the emitter of described transistor T successively by resistance R, resistance R3, another branch road is connected to 3 pin of described three terminal integrated voltage stabilizer IC by capacitor C;
1 pin of described three terminal integrated voltage stabilizer IC is connected to 2 pin of described three terminal integrated voltage stabilizer IC successively by resistance R4, diode D, adjustable resistance R2,2 pin of described three terminal integrated voltage stabilizer IC are also connected to 3 pin of described three terminal integrated voltage stabilizer IC by resistance R1.
Preferably, described three terminal integrated voltage stabilizer IC is LM317 type three terminal integrated voltage stabilizer.
Preferentially, described electric capacity C two ends are connected with filter capacitor C2.
Owing to have employed such scheme, the utility model adopt three terminal integrated voltage stabilizer achieve output voltage adjustable and utilize voltage compensating circuit and soft starting circuit solve well output voltage from 0V continuously adjustabe and adapt to load-carrying startability.There is the advantage that circuit structure is simple, cost is low, reliability is high.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the utility model embodiment;
Fig. 2 is the circuit structure diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figures 1 and 2, the DC-stabilized circuit that a kind of output voltage of the present embodiment is adjustable, it comprise for regulating circuit output voltage three terminal integrated voltage stabilizer IC, for make circuit output voltage have the soft starting circuit 1 of a slow uphill process and for make circuit output voltage can from 0V continuously adjustable voltage compensating circuit 2;
Soft starting circuit 1 in the present embodiment comprises transistor T, resistance R, resistance R3 and capacitor C, and voltage compensating circuit 2 comprises resistance R4 and diode D;
The base stage bifurcation road of transistor T, a branch road is connected to the emitter of described transistor T successively by resistance R, resistance R3, another branch road is connected to 3 pin of three terminal integrated voltage stabilizer IC by capacitor C;
1 pin of three terminal integrated voltage stabilizer IC is connected to 2 pin of three terminal integrated voltage stabilizer IC successively by resistance R4, diode D, adjustable resistance R2,2 pin of three terminal integrated voltage stabilizer IC are also connected to 3 pin of three terminal integrated voltage stabilizer IC by resistance R1.
Three terminal integrated voltage stabilizer IC adopts output voltage range of adjustment to be 1.25V ~ 37V, and output current reaches the LM317 type three terminal integrated voltage stabilizer of 1.5A, can regulation output voltage U by adjustment adjustable resistance R2
0but output voltage is minimum can only be 1.25V, increase the minimum output voltage 1.25V that voltage compensating circuit 2 can offset three terminal integrated voltage stabilizer IC output, namely when adjustment R2 reduces, when making the 3 pin voltage U 3 of three terminal integrated voltage stabilizer IC reach equal with the forward voltage drop Ud of diode D, output voltage U
0be 0V.Afterwards, when regulating R2 to increase gradually, output voltage U
0namely increase by 0V, realize output voltage U
0continuously adjustabe from 0V.
The soft starting circuit 1 of the present embodiment is as input voltage U1, because the voltage on electric capacity C can not suddenly change, therefore transistor T because base potential is higher saturation conduction, make the 3 pin voltage U 3 of the 2 pin voltage U 2 of three terminal integrated voltage stabilizer IC and three terminal integrated voltage stabilizer IC all very low, Gu U
0very little, along with the charging of electric capacity C, the base potential of transistor T declines, and its collector potential (i.e. U2) raises and U3 raised, so U
0also raise.When electric capacity C is full of electricity, transistor T is cut off, and soft starting circuit 1 is ineffective, U
0also setting value is reached.The soft starting circuit 1 added can make circuit output voltage U
0there is a uphill process slowly, to adapt to the starting characteristic of inductive load (as direct current generator).Thus make the adjustable DC-stabilized circuit of a kind of output voltage of the present embodiment have strong carrying load ability.
In addition, electric capacity C two ends are connected with filter capacitor C2, make output voltage U
0smooth steady.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. the DC-stabilized circuit that output voltage is adjustable, is characterized in that: it comprise for regulating circuit output voltage three terminal integrated voltage stabilizer (IC), for make circuit output voltage have the soft starting circuit of a slow uphill process (1) and for make circuit output voltage can from 0V continuously adjustable voltage compensating circuit (2);
Described soft starting circuit (1) comprises transistor (T), resistance (R), resistance (R3) and capacitor (C), and described voltage compensating circuit (2) comprises resistance (R4) and diode (D);
The base stage bifurcation road of described transistor (T), one branch road is connected to the emitter of described transistor (T) successively by resistance (R), resistance (R3), another branch road is connected to 3 pin of described three terminal integrated voltage stabilizer (IC) by capacitor (C);
1 pin of described three terminal integrated voltage stabilizer (IC) is connected to 2 pin of described three terminal integrated voltage stabilizer (IC) successively by resistance (R4), diode (D), adjustable resistance (R2), 2 pin of described three terminal integrated voltage stabilizer (IC) are also connected to 3 pin of described three terminal integrated voltage stabilizer (IC) by resistance (R1).
2. the DC-stabilized circuit that a kind of output voltage as claimed in claim 1 is adjustable, is characterized in that: described three terminal integrated voltage stabilizer (IC) is LM317 type three terminal integrated voltage stabilizer.
3. the DC-stabilized circuit that a kind of output voltage according to any one of claim 1-2 is adjustable, is characterized in that: described electric capacity (C) two ends are connected with filter capacitor (C2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550092.6U CN204203826U (en) | 2014-09-23 | 2014-09-23 | The DC-stabilized circuit that a kind of output voltage is adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550092.6U CN204203826U (en) | 2014-09-23 | 2014-09-23 | The DC-stabilized circuit that a kind of output voltage is adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203826U true CN204203826U (en) | 2015-03-11 |
Family
ID=52661767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420550092.6U Expired - Fee Related CN204203826U (en) | 2014-09-23 | 2014-09-23 | The DC-stabilized circuit that a kind of output voltage is adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204203826U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521827A (en) * | 2017-09-18 | 2019-03-26 | 现代自动车株式会社 | The voltage-drop compensation control system and method for power supply unit |
| WO2020052297A1 (en) * | 2018-09-14 | 2020-03-19 | 厦门天力源光电科技有限公司 | Light regulation and speed regulation circuit |
-
2014
- 2014-09-23 CN CN201420550092.6U patent/CN204203826U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521827A (en) * | 2017-09-18 | 2019-03-26 | 现代自动车株式会社 | The voltage-drop compensation control system and method for power supply unit |
| CN109521827B (en) * | 2017-09-18 | 2022-03-29 | 现代自动车株式会社 | Voltage drop compensation control system and method for power supply device |
| WO2020052297A1 (en) * | 2018-09-14 | 2020-03-19 | 厦门天力源光电科技有限公司 | Light regulation and speed regulation 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: 20150311 Termination date: 20160923 |