CN205544358U - Constant voltage charge ware power supply circuit - Google Patents
Constant voltage charge ware power supply circuit Download PDFInfo
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- CN205544358U CN205544358U CN201620048850.3U CN201620048850U CN205544358U CN 205544358 U CN205544358 U CN 205544358U CN 201620048850 U CN201620048850 U CN 201620048850U CN 205544358 U CN205544358 U CN 205544358U
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Abstract
The utility model discloses a constant voltage charge ware power supply circuit, including resistance R3, resistance R6, triode V1 and transformer W, resistance R3's one end connecting resistance R2, transformer W's winding N1 and power VCC, resistance R3's the other end connect electric capacity C1, triode V1's base and triode V2's collecting electrode, and diode D1's positive pole and resistance R7 are connected to triode V2's base, resistance R7's other end connecting resistance R6 and triode V1's projecting pole, and electric capacity C1's other end connecting resistance R4, the utility model discloses constant voltage charge ware power supply circuit simple structure, components and parts are few, only use essential electronic component to constitute, have steady voltage output, overcurrent protection, light indication and short -circuit protection's function simultaneously, have consequently that the function is various, convenient to use and a strong advantage of practicality.
Description
Technical field
This utility model relates to a kind of charger, specifically a kind of constant voltage charger power circuit.
Background technology
Rechargeable battery is a kind of conventional article in people's daily life, a lot of portable mobile equipments all can use rechargeable battery, and battery itself has certain discharge and recharge number of times, general battery only has 2 ~ 3 years, therefore battery is after fully charged, if charger can not be pulled out in time or closes power supply, not only result in great waste of energy, but also the service life of battery can be reduced significantly, after the most a lot of people are finished charger, custom is taken charging load away and is forgotten to pull up charger, cause waste of energy equally, accumulator also can be caused bigger damage by city's electro-mechanical wave simultaneously, and the existing most scope of application of charger is little, single voltage can only be exported, and less stable, thus reduce its life-span.
Utility model content
The purpose of this utility model is to provide the constant voltage charger power circuit of a kind of simple in construction, stable performance, with the problem solving to propose in above-mentioned background technology.
nullFor achieving the above object，This utility model following technical scheme of offer: a kind of constant voltage charger power circuit，Including resistance R3、Resistance R6、Audion V1 and transformator W，One end of described resistance R3 connects resistance R2、The winding N1 and power supply VCC of transformator W，The other end of resistance R3 connects electric capacity C1、The base stage of audion V1 and the colelctor electrode of audion V2，The base stage of audion V2 connects anode and the resistance R7 of diode D1，The other end of resistance R7 connects resistance R6 and the emitter stage of audion V1，The other end of electric capacity C1 connects resistance R4，The other end of resistance R4 connects negative electrode and the winding N2 of transformator W of diode D5，The plus earth of diode D5，The negative electrode of diode D1 connects resistance R5、The other end of the winding N2 of transformator W and electric capacity C3，The colelctor electrode of audion V1 connects the other end of resistance R2 and the other end of the winding N1 of transformator W，One end of the winding N3 of transformator W connects the anode of diode D2，The negative electrode of diode D2 connects electric capacity C2、Resistance R8、Resistance R9、Resistance R11 and the emitter stage of audion V3，The other end of resistance R11 connects the anode of diode D3，The minus earth of diode D3，The colelctor electrode of audion V3 connects resistance R1，The other end of resistance R1 connects the anode of diode D4，The minus earth of diode D4，The base stage of audion V3 connects resistance R10，The other end of resistance R10 connects resistance R8 and output voltage U1.
As preferred version of the present utility model: described diode D3 and diode D4 is light emitting diode.
Compared with prior art; the beneficial effects of the utility model are: this utility model constant voltage charger circuit construction of electric power is simple, components and parts are few; basic electronic component is only used to form; there is the function of voltage stabilizing output, overcurrent protection, lamplight pointing and short-circuit protection simultaneously, therefore there is diverse in function, easy to use and practical advantage.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of constant voltage charger power circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment; technical scheme in this utility model embodiment is clearly and completely described; obviously; described embodiment is only a part of embodiment of this utility model; rather than whole embodiments; based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，In this utility model embodiment，A kind of constant voltage charger power circuit，Including resistance R3、Resistance R6、Audion V1 and transformator W，One end of described resistance R3 connects resistance R2、The winding N1 and power supply VCC of transformator W，The other end of resistance R3 connects electric capacity C1、The base stage of audion V1 and the colelctor electrode of audion V2，The base stage of audion V2 connects anode and the resistance R7 of diode D1，The other end of resistance R7 connects resistance R6 and the emitter stage of audion V1，The other end of electric capacity C1 connects resistance R4，The other end of resistance R4 connects negative electrode and the winding N2 of transformator W of diode D5，The plus earth of diode D5，The negative electrode of diode D1 connects resistance R5、The other end of the winding N2 of transformator W and electric capacity C3，The colelctor electrode of audion V1 connects the other end of resistance R2 and the other end of the winding N1 of transformator W，One end of the winding N3 of transformator W connects the anode of diode D2，The negative electrode of diode D2 connects electric capacity C2、Resistance R8、Resistance R9、Resistance R11 and the emitter stage of audion V3，The other end of resistance R11 connects the anode of diode D3，The minus earth of diode D3，The colelctor electrode of audion V3 connects resistance R1，The other end of resistance R1 connects the anode of diode D4，The minus earth of diode D4，The base stage of audion V3 connects resistance R10，The other end of resistance R10 connects resistance R8 and output voltage U1.
Diode D3 and diode D4 is light emitting diode.
nullOperation principle of the present utility model is: power supply VCC mono-tunnel adds to the colelctor electrode of audion V1 through the N1 winding of switch transformer W，Another road adds to the base stage of V1 through current-limiting resistance R3，Starting current is provided for V1，V1 begins to turn on，Its collected current produces just lower negative electromotive force in the N1 winding of W，Couple through W，Just lower negative electromotive force is induced in the N2 winding of W，This electromotive force is through R4、C1 is added to the base stage of V1，Make the rapid saturation conduction of V1，Can not suddenly change owing to flowing through the electric current of inductance，Therefore electromotive force positive under negative on producing in the N1 winding of W，Couple through W，Electromotive force positive under bearing is induced in the N2 winding of W，Pass through R4、C1，V1 is made to quickly enter cut-off state，The continuous of C1 is charged by power supply VCC through R3，V1 begins to turn on again，And then enter the switch oscillating state of next round，During cut-off，W passes through secondary N3 winding，Release energy through D2 and load circuit thereof，Obtain the voltage U1 needed for load.
Mu balanced circuit is made up of elements such as D1, V2.When load reduction or input voltage raise, the cathode voltage of diode D1 certainly will rise, and when this voltage is more than certain value, diode D1 punctures, and V2 turns on rapidly because of b-e knot positively biased, makes V1 end in advance, and then makes output voltage tend to declining；Otherwise, then process is controlled contrary, so that W secondary output voltage is basicly stable.
Protection circuit is made up of current-limiting resistance R1, R6.When overload; the c-e electrode current of V1 certainly will increase; pressure drop on R6 increases the most therewith, when this voltage is more than 0.7V, and V2 saturation conduction; be equivalent to that the c-e of V2 is extremely short to be connect; V1 is immediately turned off because of base stage dead electricity, reaches the purpose of overcurrent protection, for the spike high-voltage breakdown V1 avoiding the N1 winding ending period W to induce; at the N1 winding parallel spike absorption resistance R2 of W, improving the switching characteristic of V1.
Charging circuit is when charging circuit is in zero load, and the upper no current of R8 flows through, and the e-b junction voltage of V3 is of substantially equal, and V3 ends, and diode D4 extinguishes, and power supply indicator D3 lights；When accessing load, the pressure drop that output electric current produces on R8 makes V3 positively biased turn on, and D4 lights, and represents and charges.Along with battery constantly charges, its charging current is gradually reduced, and the pressure drop on R8 reduces the most therewith, and when the e-b junction bias of V3 is less than 0.7V, V3 ends, and D4 extinguishes, and represents that electricity has been filled with, should stop charging in time, in order to avoid damaging rechargeable battery.
Claims (2)
- null1. a constant voltage charger power circuit，Including resistance R3、Resistance R6、Audion V1 and transformator W，It is characterized in that，One end of described resistance R3 connects resistance R2、The winding N1 and power supply VCC of transformator W，The other end of resistance R3 connects electric capacity C1、The base stage of audion V1 and the colelctor electrode of audion V2，The base stage of audion V2 connects anode and the resistance R7 of diode D1，The other end of resistance R7 connects resistance R6 and the emitter stage of audion V1，The other end of electric capacity C1 connects resistance R4，The other end of resistance R4 connects negative electrode and the winding N2 of transformator W of diode D5，The plus earth of diode D5，The negative electrode of diode D1 connects resistance R5、The other end of the winding N2 of transformator W and electric capacity C3，The colelctor electrode of audion V1 connects the other end of resistance R2 and the other end of the winding N1 of transformator W，One end of the winding N3 of transformator W connects the anode of diode D2，The negative electrode of diode D2 connects electric capacity C2、Resistance R8、Resistance R9、Resistance R11 and the emitter stage of audion V3，The other end of resistance R11 connects the anode of diode D3，The minus earth of diode D3，The colelctor electrode of audion V3 connects resistance R1，The other end of resistance R1 connects the anode of diode D4，The minus earth of diode D4，The base stage of audion V3 connects resistance R10，The other end of resistance R10 connects resistance R8 and output voltage U1.
- Constant voltage charger power circuit the most according to claim 1, it is characterised in that described diode D3 and diode D4 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048850.3U CN205544358U (en) | 2016-01-19 | 2016-01-19 | Constant voltage charge ware power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620048850.3U CN205544358U (en) | 2016-01-19 | 2016-01-19 | Constant voltage charge ware power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205544358U true CN205544358U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620048850.3U Expired - Fee Related CN205544358U (en) | 2016-01-19 | 2016-01-19 | Constant voltage charge ware power supply circuit |
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| Country | Link |
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| CN (1) | CN205544358U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108908720A (en) * | 2018-07-11 | 2018-11-30 | 郭丰垒 | A kind of construction site aggregate blender |
| CN109450652A (en) * | 2018-11-26 | 2019-03-08 | 珠海世讯科技有限公司 | A kind of bus-powered circuit of KNX |
-
2016
- 2016-01-19 CN CN201620048850.3U patent/CN205544358U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108908720A (en) * | 2018-07-11 | 2018-11-30 | 郭丰垒 | A kind of construction site aggregate blender |
| CN109450652A (en) * | 2018-11-26 | 2019-03-08 | 珠海世讯科技有限公司 | A kind of bus-powered circuit of KNX |
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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: 20160831 Termination date: 20170119 |