CN204732947U - A kind of charging control circuit for mobile phone - Google Patents
A kind of charging control circuit for mobile phone Download PDFInfo
- Publication number
- CN204732947U CN204732947U CN201520357962.2U CN201520357962U CN204732947U CN 204732947 U CN204732947 U CN 204732947U CN 201520357962 U CN201520357962 U CN 201520357962U CN 204732947 U CN204732947 U CN 204732947U
- Authority
- CN
- China
- Prior art keywords
- transformer
- triode
- control circuit
- mobile phone
- diode
- 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.)
- Expired - Fee Related
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of charging control circuit for mobile phone, comprise rectifier circuit, transformer, triode, feedback control circuit, the external civil power of input of rectifier circuit, the positive output end of rectifier circuit is held with the A of primary winding and is connected, the positive output end of rectifier circuit is also connected with the negative pole of the first voltage stabilizing didoe, the positive pole of the first voltage stabilizing didoe to be held with the B of primary winding by electric capacity and is connected, the positive output end of rectifier circuit is also connected with the base stage of triode by starting resistance, the collector electrode of triode is held with the B of primary winding and is connected, the emitter of triode is connected with the negative output terminal of rectifier circuit by resistance, transformer secondary output is around being output, the sampling winding of transformer is connected with the base stage of triode by feedback control circuit.The utility model circuit is simple, and easily realize, with low cost, volume is little, is convenient to be arranged in mobile phone, has a good application prospect.
Description
Technical field
The utility model relates to a kind of charging control circuit for mobile phone, belongs to charging technique field.
Background technology
At present, be applied to the charging control circuit on mobile phone on the market, circuit more complicated, used electronic devices and components are more, and cost of manufacture is higher, thus cause the volume of circuit board comparatively large, are not easy to be arranged on interior of mobile phone.
Utility model content
The purpose of this utility model overcomes the existing charging control circuit be applied on mobile phone, circuit more complicated, and used electronic devices and components are more, and cost of manufacture is higher, thus cause the volume of circuit board comparatively large, is not easy to be arranged on interior of mobile phone.
In order to achieve the above object, the technical solution adopted in the utility model is:
A kind of charging control circuit for mobile phone, it is characterized in that: comprise rectifier circuit, transformer T1, triode Q1, feedback control circuit, the external civil power of input of described rectifier circuit, the positive output end of described rectifier circuit is held with the A of transformer T1 armature winding and is connected, the positive output end of described rectifier circuit is also connected with the negative pole of the first voltage stabilizing didoe D1, the positive pole of described first voltage stabilizing didoe D1 to be held with the B of transformer T1 armature winding by electric capacity C1 and is connected, the positive output end of described rectifier circuit is also connected with the base stage of triode Q1 by starting resistance R1, the collector electrode of described triode Q1 is held with the B of transformer T1 armature winding and is connected, the emitter of described triode Q1 is connected with the negative output terminal of rectifier circuit by resistance R2, one end of described transformer T1 secondary winding is also connected with the positive pole of light-emitting diode D2, the negative pole of described Schottky diode VD is in series with current-limiting resistance R3, the rear end parallel connection of described current-limiting resistance R3 is load RL, described load RL is as the output of charging control circuit, the sampling winding of described transformer T1 is connected by the base stage of feedback control circuit with triode Q1, described feedback control circuit comprises sampling current resistance R4, second voltage stabilizing didoe D2, first diode D3, second diode D4, one end that described transformer T1 samples winding respectively with one end of sampling current resistance R4, the negative pole of the first diode D3 is connected, the other end that the positive pole of described first diode D3 also samples winding by polar capacitor C2 and transformer T1 is connected, the other end of described sampling current resistance R4 is connected with the base stage of triode Q1 by electric capacity C3, the positive pole of described second voltage stabilizing didoe D2 is connected with the positive pole of the first diode D3, the negative pole of described second voltage stabilizing didoe D2 is connected with the base stage of triode Q1, the positive pole of described second diode D4 is connected with the other end that transformer T1 samples winding, the negative pole of described second diode D4 is connected with the base stage of triode Q1.
Aforesaid a kind of charging control circuit for mobile phone, is characterized in that: described triode Q1 is NPN triode.
Aforesaid a kind of charging control circuit for mobile phone, is characterized in that: the two ends of described transformer T1 secondary winding are also parallel with filter capacitor C4.
Aforesaid a kind of charging control circuit for mobile phone, is characterized in that: described transformer T1 is high frequency switch transformer.
Aforesaid a kind of charging control circuit for mobile phone, is characterized in that: the positive input terminal series connection of described rectifier circuit is fuse F1.
Aforesaid a kind of charging control circuit for mobile phone, is characterized in that: the output voltage of described transformer T1 secondary winding is between 5V-6.2V.
Aforesaid a kind of charging control circuit for mobile phone, is characterized in that: the rear end of described current-limiting resistance R3 is in series with light-emitting diode D5.
The beneficial effects of the utility model are: the charging control circuit for mobile phone of the present utility model, being provided with feedback control circuit, when charging saturated, output voltage can being reduced, prevent from overcharging, circuit is simple, and used electronic devices and components are few, easily realize, with low cost, volume is little, is convenient to be arranged in mobile phone, has a good application prospect.
Accompanying drawing explanation
Fig. 1 is the system block diagram of a kind of charging control circuit for mobile phone of the present utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model with this.
As shown in Figure 1, charging control circuit for mobile phone of the present utility model, comprise rectifier circuit, transformer T1, triode Q1, feedback control circuit, the external civil power of input of rectifier circuit, the positive output end of rectifier circuit is held with the A of transformer T1 armature winding and is connected, the positive output end of rectifier circuit is also connected with the negative pole of the first voltage stabilizing didoe D1, the positive pole of the first voltage stabilizing didoe D1 to be held with the B of transformer T1 armature winding by electric capacity C1 and is connected, the positive output end of rectifier circuit is also connected with the base stage of triode Q1 by starting resistance R1, the collector electrode of triode Q1 is held with the B of transformer T1 armature winding and is connected, the emitter of triode Q1 is connected with the negative output terminal of rectifier circuit by resistance R2, one end of transformer T1 secondary winding is also connected with the positive pole of light-emitting diode D2, the negative pole of Schottky diode VD is in series with current-limiting resistance R3, the rear end parallel connection of current-limiting resistance R3 is load RL, load RL is as the output of charging control circuit, the sampling winding of transformer T1 is connected by the base stage of feedback control circuit with triode Q1, feedback control circuit comprises sampling current resistance R4, second voltage stabilizing didoe D2, first diode D3, second diode D4, one end that transformer T1 samples winding respectively with one end of sampling current resistance R4, the negative pole of the first diode D3 is connected, the other end that the positive pole of the first diode D3 also samples winding by polar capacitor C2 and transformer T1 is connected, the other end of sampling current resistance R4 is connected with the base stage of triode Q1 by electric capacity C3, the positive pole of described second voltage stabilizing didoe D2 is connected with the positive pole of the first diode D3, the negative pole of described second voltage stabilizing didoe D2 is connected with the base stage of triode Q1, the positive pole of described second diode D4 is connected with the other end that transformer T1 samples winding, the negative pole of described second diode D4 is connected with the base stage of triode Q1.
Described triode Q1 is NPN triode, the two ends of transformer T1 secondary winding are also parallel with filter capacitor C4, improve the stability of output voltage, to give the charge in batteries in mobile phone, transformer T1 is high frequency switch transformer, iron core is high frequency ferrite core, there is high resistivity, to reduce eddy current, improve conversion effect, by external load resistance RL, output voltage is between 5V-6.2V, a little more than the 5V voltage giving storage battery in mobile phone, be convenient to charge to storage battery in mobile phone, the positive input terminal series connection of rectifier circuit is fuse F1, prevent electric current excessive, burn out other electronic devices and components.
The rear end of described current-limiting resistance R3 is in series with light-emitting diode D5.
Charging control circuit for mobile phone of the present utility model, operation principle is: civil power inputs, rectifier circuit rectification, transformer T1 is delivered to through the first voltage stabilizing didoe D1, starting resistance R1, the emitter current started is provided to triode Q1, when triode Q1 is in cut-off state, the normal work of transformer T1 armature winding, the voltage exporting 5V-6.2V charges to storage battery in mobile phone, when in mobile phone, charge in batteries is saturated, voltage reaches more than 5V, output voltage close to transformer T1 reaches the highest, voltage on the sampling current resistance R4 of feedback control circuit raises along with the output of transformer T1 is greater than and increases, cause triode Q1 conducting, the armature winding of transformer T1 does not work, do not carry out voltage output, realize FEEDBACK CONTROL like this, even if charging is not pulled out, in fact also do not charge, easy to use, simple and reliable.
Charging control circuit for mobile phone of the present utility model, being provided with feedback control circuit, when charging saturated, output voltage can being reduced, prevent from overcharging, circuit is simple, and used electronic devices and components are few, easily realize, with low cost, volume is little, is convenient to be arranged in mobile phone, has a good application prospect.
More than show and describe general principle of the present utility model, principal character and advantage.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. the charging control circuit for mobile phone, it is characterized in that: comprise rectifier circuit, transformer T1, triode Q1, feedback control circuit, the external civil power of input of described rectifier circuit, the positive output end of described rectifier circuit is held with the A of transformer T1 armature winding and is connected, the positive output end of described rectifier circuit is also connected with the negative pole of the first voltage stabilizing didoe D1, the positive pole of described first voltage stabilizing didoe D1 to be held with the B of transformer T1 armature winding by electric capacity C1 and is connected, the positive output end of described rectifier circuit is also connected with the base stage of triode Q1 by starting resistance R1, the collector electrode of described triode Q1 is held with the B of transformer T1 armature winding and is connected, the emitter of described triode Q1 is connected with the negative output terminal of rectifier circuit by resistance R2, one end of described transformer T1 secondary winding is also connected with the positive pole of light-emitting diode D2, the negative pole of Schottky diode VD is in series with current-limiting resistance R3, the rear end parallel connection of described current-limiting resistance R3 is load RL, described load RL is as the output of charging control circuit, the sampling winding of described transformer T1 is connected by the base stage of feedback control circuit with triode Q1, described feedback control circuit comprises sampling current resistance R4, second voltage stabilizing didoe D2, first diode D3, second diode D4, one end that described transformer T1 samples winding respectively with one end of sampling current resistance R4, the negative pole of the first diode D3 is connected, the other end that the positive pole of described first diode D3 also samples winding by polar capacitor C2 and transformer T1 is connected, the other end of described sampling current resistance R4 is connected with the base stage of triode Q1 by electric capacity C3, the positive pole of described second voltage stabilizing didoe D2 is connected with the positive pole of the first diode D3, the negative pole of described second voltage stabilizing didoe D2 is connected with the base stage of triode Q1, the positive pole of described second diode D4 is connected with the other end that transformer T1 samples winding, the negative pole of described second diode D4 is connected with the base stage of triode Q1.
2. a kind of charging control circuit for mobile phone according to claim 1, is characterized in that: described triode Q1 is NPN triode.
3. a kind of charging control circuit for mobile phone according to claim 1, is characterized in that: the two ends of described transformer T1 secondary winding are also parallel with filter capacitor C4.
4. a kind of charging control circuit for mobile phone according to claim 1, is characterized in that: described transformer T1 is high frequency switch transformer.
5. a kind of charging control circuit for mobile phone according to claim 1, is characterized in that: the positive input terminal series connection of described rectifier circuit is fuse F1.
6. a kind of charging control circuit for mobile phone according to claim 1, is characterized in that: the output voltage of described transformer T1 secondary winding is between 5V-6.2V.
7. a kind of charging control circuit for mobile phone according to claim 1, is characterized in that: the rear end of described current-limiting resistance R3 is in series with light-emitting diode D5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520357962.2U CN204732947U (en) | 2015-05-29 | 2015-05-29 | A kind of charging control circuit for mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520357962.2U CN204732947U (en) | 2015-05-29 | 2015-05-29 | A kind of charging control circuit for mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204732947U true CN204732947U (en) | 2015-10-28 |
Family
ID=54391271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520357962.2U Expired - Fee Related CN204732947U (en) | 2015-05-29 | 2015-05-29 | A kind of charging control circuit for mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204732947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882953A (en) * | 2015-05-29 | 2015-09-02 | 苏州工业职业技术学院 | Mobile phone charging control circuit |
-
2015
- 2015-05-29 CN CN201520357962.2U patent/CN204732947U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882953A (en) * | 2015-05-29 | 2015-09-02 | 苏州工业职业技术学院 | Mobile phone charging control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205610297U (en) | Energy -conservation automatic control circuit that charges | |
| CN100414810C (en) | Voltage identification short circuit protection constant current voltage stabilizing circuit | |
| CN204732947U (en) | A kind of charging control circuit for mobile phone | |
| CN103259295A (en) | Portable electronic device with solar charging function | |
| CN205051415U (en) | Lithium battery charging circuit | |
| CN202918037U (en) | Electric bicycle charger | |
| CN205051407U (en) | Lithium batteries protects controller | |
| CN205544358U (en) | Constant voltage charge ware power supply circuit | |
| CN203933116U (en) | A kind of charger for mobile phone | |
| CN104836316A (en) | Current-adjustable constant current charging circuit | |
| CN202495882U (en) | Power supply circuit and television | |
| CN204681147U (en) | A kind of constant-current charging circuit of adjustable current | |
| CN203522280U (en) | Mobile phone charger with utilization of solar energy | |
| CN104882953A (en) | Mobile phone charging control circuit | |
| CN104578223A (en) | Solar charger for mobile phone | |
| CN204859016U (en) | AC -DC converting circuit | |
| CN204349510U (en) | There is the quick charger of temperature control loops | |
| CN203984047U (en) | A kind of solar DC uninterrupted power supply circuit | |
| CN204118776U (en) | A kind of power supply adaptor control circuit for 3G mobile terminal | |
| CN204334334U (en) | A kind of small-power voltage-stabilized power supply circuit with overcurrent protection function | |
| CN204794197U (en) | Battery automatic control circuit that charges | |
| CN204835677U (en) | Battery charging circuit that connects in parallel | |
| CN105375600A (en) | Lithium battery charging circuit | |
| CN204244080U (en) | A kind of power switch circuit of radio-frequency card | |
| CN104570816A (en) | Simple time delay power supply switching circuit |
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 |
Granted publication date: 20151028 Termination date: 20160529 |