CN204794194U - Charger with low costs - Google Patents
Charger with low costs Download PDFInfo
- Publication number
- CN204794194U CN204794194U CN201520471509.4U CN201520471509U CN204794194U CN 204794194 U CN204794194 U CN 204794194U CN 201520471509 U CN201520471509 U CN 201520471509U CN 204794194 U CN204794194 U CN 204794194U
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- resistance
- diode
- triode
- rectifier bridge
- transformer
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a charger with low costs, including transformer T, rectifier bridge Q, diode D1, diode D2, triode VT1, resistance R1 and one -way silicon controlled rectifier VS, 220V alternating current one end is connected respectively to transformer T coil L1 one end and diode D1 is anodal, ground connection diode D2 negative pole is connected to diode D1 negative pole, the 220V alternating current other end is connected to the transformer T coil L1 other end, transformer T coil L2 connects at both ends rectifier bridge Q pin 1 and rectifier bridge Q pin 4 respectively, 2 difference connecting resistance R1 and triode VT1 projecting poles of rectifier bridge Q pin. The utility model discloses charger with low costs, circuit structure is simple, does not adopt any chip element, and stability is high, still adds diode D1 and diode D2, can arrive the spike voltage clamper that produces because of the leakage inductance in the transformer T coil safe value, has promoted the security, and is with low costs, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of charger, the charger that specifically a kind of cost is low.
Background technology
Along with improving constantly of people's living standard; electronic equipment has become a requisite part in life; especially the mobile device such as mobile phone, panel computer; but the shortcoming of this class of electronic devices ubiquity battery durable ability; the appearance of Portable power source well solves this problem; but the portable power source ubiquity complex structure that market occurs, function singleness, the defect that cost is high, security performance is low, often can produce the news that portable power source explodes in charging process.
Utility model content
The purpose of this utility model is to provide the charger that a kind of fail safe is high, cost is low, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
The charger that a kind of cost is low, comprise transformer T, rectifier bridge Q, diode D1, diode D2, triode VT1, resistance R1 and one-way SCR VS, described transformer T coil L1 one end connects 220V alternating current one end and diode D1 positive pole respectively, diode D1 negative pole connects ground connection diode D2 negative pole, the described transformer T coil L1 other end connects the 220V alternating current other end, transformer T coil L2 two ends connect rectifier bridge Q pin 1 and rectifier bridge Q pin 4 respectively, rectifier bridge Q pin 2 is contact resistance R1 and triode VT1 emitter respectively, the resistance R1 other end is contact resistance R4 respectively, resistance R2 and triode VT2 collector electrode, resistance R2 other end connecting triode VT1 base stage, the K pole of the triode VT2 base stage difference contact resistance R4 other end and one-way SCR VS, the A pole of one-way SCR VS connects rectifier bridge Q pin 3 respectively, resistance R7, resistance R6 and battery pack E negative pole, the G pole of resistance R7 other end difference contact resistance R5 and one-way SCR VS, the resistance R5 other end is connecting triode VT2 emitter and triode VT3 emitter respectively, the triode VT3 base stage contact resistance R6 other end, triode VT3 collector electrode connects battery pack E positive pole and light-emitting diode D3 negative pole respectively, light-emitting diode D3 positive pole is by resistance R3 connecting triode VT1 collector electrode.
As the utility model further scheme: described one-way SCR VS model is TL431.
Compared with prior art, the beneficial effects of the utility model are: the charger that the utility model cost is low, circuit structure is simple, do not adopt any chip component, stability is high, also adds diode D1 and diode D2, can by transformer T coil because of leakage inductance produce peak voltage clamper to safety value, improve fail safe, cost is low, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the charger that cost is low.
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, the charger that a kind of cost is low, comprise transformer T, rectifier bridge Q, diode D1, diode D2, triode VT1, resistance R1 and one-way SCR VS, transformer T coil L1 one end connects 220V alternating current one end and diode D1 positive pole respectively, diode D1 negative pole connects ground connection diode D2 negative pole, the transformer T coil L1 other end connects the 220V alternating current other end, transformer T coil L2 two ends connect rectifier bridge Q pin 1 and rectifier bridge Q pin 4 respectively, rectifier bridge Q pin 2 is contact resistance R1 and triode VT1 emitter respectively, the resistance R1 other end is contact resistance R4 respectively, resistance R2 and triode VT2 collector electrode, resistance R2 other end connecting triode VT1 base stage, the K pole of the triode VT2 base stage difference contact resistance R4 other end and one-way SCR VS, the A pole of one-way SCR VS connects rectifier bridge Q pin 3 respectively, resistance R7, resistance R6 and battery pack E negative pole, the G pole of resistance R7 other end difference contact resistance R5 and one-way SCR VS, the resistance R5 other end is connecting triode VT2 emitter and triode VT3 emitter respectively, the triode VT3 base stage contact resistance R6 other end, triode VT3 collector electrode connects battery pack E positive pole and light-emitting diode D3 negative pole respectively, light-emitting diode D3 positive pole is by resistance R3 connecting triode VT1 collector electrode.
One-way SCR VS model is TL431.
Operation principle of the present utility model is: refer to Fig. 1, diode VT2, resistance R4, one-way SCR VS etc. form accurate adjustable voltage stabilizing circuit, triode VT3, resistance R6 etc. form adjustable constant-flow circuit, triode VT1, resistance R2 and light-emitting diode D3 etc. form charging indication, rise gradually along with by charged lithium cells voltage, charging current will reduce gradually, pressure drop after battery pack E is full of on resistance R1 constantly reduces, finally make triode VT1 by, light-emitting diode D3 extinguishes, and battery pack E stops energising.
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 specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. the charger that a cost is low, comprise transformer T, rectifier bridge Q, diode D1, diode D2, triode VT1, resistance R1 and one-way SCR VS, it is characterized in that, described transformer T coil L1 one end connects 220V alternating current one end and diode D1 positive pole respectively, diode D1 negative pole connects ground connection diode D2 negative pole, the described transformer T coil L1 other end connects the 220V alternating current other end, transformer T coil L2 two ends connect rectifier bridge Q pin 1 and rectifier bridge Q pin 4 respectively, rectifier bridge Q pin 2 is contact resistance R1 and triode VT1 emitter respectively, the resistance R1 other end is contact resistance R4 respectively, resistance R2 and triode VT2 collector electrode, resistance R2 other end connecting triode VT1 base stage, the K pole of the triode VT2 base stage difference contact resistance R4 other end and one-way SCR VS, the A pole of one-way SCR VS connects rectifier bridge Q pin 3 respectively, resistance R7, resistance R6 and battery pack E negative pole, the G pole of resistance R7 other end difference contact resistance R5 and one-way SCR VS, the resistance R5 other end is connecting triode VT2 emitter and triode VT3 emitter respectively, the triode VT3 base stage contact resistance R6 other end, triode VT3 collector electrode connects battery pack E positive pole and light-emitting diode D3 negative pole respectively, light-emitting diode D3 positive pole is by resistance R3 connecting triode VT1 collector electrode.
2. the charger that cost according to claim 1 is low, is characterized in that, described one-way SCR VS model is TL431.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520471509.4U CN204794194U (en) | 2015-07-03 | 2015-07-03 | Charger with low costs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520471509.4U CN204794194U (en) | 2015-07-03 | 2015-07-03 | Charger with low costs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794194U true CN204794194U (en) | 2015-11-18 |
Family
ID=54534177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520471509.4U Expired - Fee Related CN204794194U (en) | 2015-07-03 | 2015-07-03 | Charger with low costs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204794194U (en) |
-
2015
- 2015-07-03 CN CN201520471509.4U patent/CN204794194U/en not_active Expired - Fee Related
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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: 20151118 Termination date: 20160703 |