CN87204419U - Dry battery charging unit - Google Patents
Dry battery charging unit Download PDFInfo
- Publication number
- CN87204419U CN87204419U CN 87204419 CN87204419U CN87204419U CN 87204419 U CN87204419 U CN 87204419U CN 87204419 CN87204419 CN 87204419 CN 87204419 U CN87204419 U CN 87204419U CN 87204419 U CN87204419 U CN 87204419U
- Authority
- CN
- China
- Prior art keywords
- resistance
- triode
- charger
- circuit
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a domestic dry battery charger. The back part of a depressurization rectifier is connected in series with a regulating switch, and the regulating switch is composed of a sampling comparator and a regulator. The regulating switch can be used for automatically regulating charging capacity and automatically controlling charging time, and batteries can be prevented from damage due to overcharging. The dry battery charger is suitable for domestic daily charge.
Description
The utility model relates to a kind of charger, particularly a kind of dry battery charger.Use for family's dry battery charge.
Known household small-size dry battery charger is made up of transformation, rectification and indicating circuit, and the 220V civil power is connected to behind step-down rectifier and is recharged the pond and charges.Simple and practical, but its shortcoming is also arranged: be difficult to grasp charge volume and charging interval, damage battery easily because of overcharging.
The purpose of this utility model provides a kind of like this household small-size dry battery charger, can control charge volume and charging interval automatically.
The utility model charger is characterised in that: be serially connected with a by-pass cock circuit after step-down rectifying circuit.This circuit can be according to the height control charging current and the time that are recharged cell voltage.When being recharged cell voltage when low, the by-pass cock circuit with big electric current to battery charge.Along with the prolongation in charging interval, be recharged cell voltage and raise, by-pass cock circuit output current reduces gradually.When being recharged cell voltage and reaching rated value, the by-pass cock circuit turn-offs and stops charging, so just can control charge volume and charging interval automatically, prevents to damage battery because of overcharging, and this is an advantage of the present utility model.
The utility model will be further described below in conjunction with embodiment and accompanying drawing.
Accompanying drawing is the utility model electrical schematic diagram.
The utility model has transformer (B), rectifier diode (D as shown in the figure
1) and by light-emitting diodes (D
2), resistance (R
8) and by resistance (R
1, R
7, R
9), triode (BG
4), electric capacity (C
2), light-emitting diode (D
3) indicating circuit formed; At rectifier diode (D
1) after be serially connected with a by-pass cock circuit, this by-pass cock has by NPN type triode (BC
2) resistance (R
3, R
4, R
5, R
6), adjustable resistance (W) and electric capacity (C
2), NPN type multiple tube (BG
2, BG
3), resistance (R
2, R
3) and bulb (V) composition.Resistance (R
4, R
5, R
6) know the output that is connected to charger after adjustable resistance (W) is connected successively, (BG
1) base stage is connected with the middle plug of adjustable resistance (W), emitter connects power cathode, collector electrode simultaneously and (BG
2) base stage and resistance (R
3) connect (R
3) the other end and Darlington (BG
2), (BG
3) collector electrode with being connected to rectification circuit output end, (BG
3) emitter as the output of by-pass cock circuit.Electric capacity (C
2) be parallel to (BG
1) between base stage and the emitter.
For charging current being played certain current limliting current stabilization effect, be connected in series into resistance (R with the junction of by-pass cock at rectification circuit
2), and be connected in series into a bulb (V) at the output of by-pass cock.Step switch (K
1) can make charger to different batteries chargings.
The B voltage of ordering raises with the C point voltage as shown in the figure, i.e. triode (BG
1) base current increase and (BG with the rising that is recharged cell voltage
1) increase of base current makes multiple tube (BG
2, BG
3) base current reduce, make (BG
2, BG
3) the emitter follower output formed reduces, promptly charging current reduces along with the rising that is recharged cell voltage.When the C point voltage reaches rated value, the dividing potential drop that B is ordered will make (BG
1) conducting and make (BG
2) (BG
3) by and stop the charging.
A typical application examples of the present utility model is as shown in the table:
Numbering title model specification numbering title model specification
BG
1Triode 3DG201C R
1Resistance 3 Ω
BG
2Triode 3DG201C R
2Resistance 5 Ω
BG
3Triode 3D * 204 R
3Resistance 1K
BG
4Triode 3A * 31 R
4Resistance 1K
B transformer 2W220V/12V R
5Resistance 1K
D
1Diode 1N4001 R
6Resistance 1K
D
2LED R
7Resistance 200 Ω
D
8LED R
8Resistance 1.4K
V bulb 3V100mA R
9Resistance 680 Ω
C
1Capacitor 47 μ f W adjustable resistance 3K
C
2Capacitor 0.01 μ f
K
1The band switch SP3T
Claims (1)
1, a kind of dry battery charger is made up of transformation, rectification and indicating circuit, it is characterized in that: the output of rectification circuit is serially connected with a by-pass cock circuit, and this circuit is by NPN type triode [BG
1] BG
2BG
3], resistance [R
2R
3R
4R
5R
6], adjustable resistance [W], electric capacity [C
2], bulb [V] and step switch [k
1] form; [R
2] an end and rectification output end anodally be connected the other end and resistance [R
3] and compound transistor [BG
2BG
3] collector electrode connect resistance [R
3] the other end and triode [BG
2] base stage and triode [BG
1] collector electrode connect triode [BG
3] base stage and triode [BG
2] emitter connect triode [BG
3] emitter be connected the other end of bulb and resistance [R with bulb
4] connect output cathode as charger.Resistance [R
4R
5R
6] and adjustable resistance [W] is parallel to after connecting successively that the charger output is rectified, between the negative pole, [R wherein
4] connect positive pole, [W] connects negative pole, the centre tap of adjustable resistance [W] and triode [BG
1] base stage connect capacitor [C
2] be parallel to triode [BG
1] base stage and emitter on and be connected to as the emitter-base bandgap grading of charger on the negative pole of rectification circuit and as the output negative pole of charger.Step switch [k
1] in be terminated at resistance [R
6] with the junction of adjustable resistance [W], two branch ends are connecting resistance [R respectively
4] and [R
5] and [R
5] and [R
6] the junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204419 CN87204419U (en) | 1987-07-11 | 1987-07-11 | Dry battery charging unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204419 CN87204419U (en) | 1987-07-11 | 1987-07-11 | Dry battery charging unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87204419U true CN87204419U (en) | 1988-08-10 |
Family
ID=4820304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87204419 Withdrawn CN87204419U (en) | 1987-07-11 | 1987-07-11 | Dry battery charging unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87204419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931259A (en) * | 2009-06-18 | 2010-12-29 | 鸿富锦精密工业（深圳）有限公司 | Wireless device with charging function |
-
1987
- 1987-07-11 CN CN 87204419 patent/CN87204419U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931259A (en) * | 2009-06-18 | 2010-12-29 | 鸿富锦精密工业（深圳）有限公司 | Wireless device with charging function |
| CN101931259B (en) * | 2009-06-18 | 2014-09-17 | 鸿富锦精密工业（深圳）有限公司 | Wireless device with charging function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |