CN203788522U - Dual mode flash lamp control circuit and terminal device - Google Patents
Dual mode flash lamp control circuit and terminal device Download PDFInfo
- Publication number
- CN203788522U CN203788522U CN201420150613.9U CN201420150613U CN203788522U CN 203788522 U CN203788522 U CN 203788522U CN 201420150613 U CN201420150613 U CN 201420150613U CN 203788522 U CN203788522 U CN 203788522U
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- resistance
- triode
- module
- control circuit
- base stage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a dual mode flash lamp control circuit which comprises a first control module, a first switch module, a first constant current module, a second control module, a second switch module, a second constant current module and a flash lamp. The first control module, the first switch module and the first constant current module are connected in sequence. The second control module, the second switch module and the second constant current module are connected in sequence. The input end of the second constant current module is connected with the output end of the first constant current module. The output end of the second constant current module is connected with the flash lamp. According to the utility model, dual mode switching and control are realized; the cost of the flash lamp is reduced; through mass production verification, the stability meets each indicator; the overall cost is reduced; a flash lamp circuit is simplified; a customer can use the LED flash lamp when using a smartphone and a flat computer; and the performance and the reduced cost reach desired effects.
Description
Technical field
The utility model relates to electronic applications, relates in particular to double mode flash control circuit and terminal equipment.
Background technology
Common flash control circuit is by a PWM switching mode constant current IC at present, give me a little intense flash lamp according to control circuit control mode, but current circuit-line complexity, account for that PCB area is large, IC is high with peripheral cost, constant current relies on PWM duty recently to regulate, and controls complexity.
Utility model content
In order to solve the problems of the prior art, the utility model provides a kind of double mode flash control circuit.
The utility model provides a kind of double mode flash control circuit, comprise the first control module, the first switch module, the first constant flow module, the second control module, second switch module, the second constant flow module, photoflash lamp, described the first control module, described the first switch module, described the first constant flow module is connected successively, described the second control module, described second switch module, described the second constant flow module is connected successively, described the second constant flow module input is connected with described the first constant flow module output, described the second constant flow module output is connected with described photoflash lamp.
As further improvement of the utility model, this double mode flash control circuit comprises the 7th resistance, the 8th resistance, described the first switch module comprises the first triode, the second triode, described second switch module comprises the 3rd triode, the 4th triode, described the first control module is connected with described the first transistor base, described the first transistor collector is connected with described the second transistor base, described the second transistor collector is connected with described the 7th resistance one end, described the 7th resistance other end is connected with described the 8th resistance one end, described the 8th resistance other end is connected with described photoflash lamp, described the second control module is connected with described the 3rd transistor base, described the 3rd transistor collector is connected with described the 4th transistor base, described the 4th transistor emitter is connected in described the 7th resistance one end, and described the 4th transistor collector is connected in described the 7th resistance other end.
As further improvement of the utility model, described photoflash lamp is LED photoflash lamp.
As further improvement of the utility model, this double mode flash control circuit also comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, described first resistance one end is connected with described the first control module, and the first transistor base is connected described in the described first resistance other end; Described second resistance one end is connected with described the first transistor collector, the described second resistance other end is connected with described the second transistor base, described the 4th resistance one end is connected with the described second resistance other end, and described the 4th resistance other end is connected with described the second transistor emitter; Described the 5th resistance one end is connected with described the second control module, and the 3rd transistor base is connected described in described the 5th resistance other end; Described the 6th resistance one end is connected with described the 3rd transistor collector, described the 6th resistance other end is connected with described the 4th transistor base, described the 3rd resistance one end connects described the 4th transistor base, and described the 3rd resistance other end connects respectively described the second transistor collector and described the 4th transistor emitter.
The utility model provides a kind of terminal equipment, and this terminal equipment comprises described double mode flash control circuit.
As further improvement of the utility model, this terminal is outer for comprising shell, elastomeric element, protective sleeve, and described protective sleeve is wrapped in described outer surface of outer cover, and described elastomeric element is installed between described protective sleeve and described shell.
As further improvement of the utility model, described elastomeric element comprises spring or shell fragment, and described elastomeric element is multiple; Described protection is placed on flexible material and makes.
As further improvement of the utility model, this terminal equipment comprises panel computer, mobile phone.
The beneficial effects of the utility model are: the utility model has been realized double mode switching and control, realize the possibility of low cost photoflash lamp, volume production has verified that stability meets indices, the utility model has reduced complete machine cost, simplify flash lamp circuit, met the requirement that client uses smart mobile phone and panel computer LED photoflash lamp, performance produces a desired effect with reducing costs all.
Brief description of the drawings
Fig. 1 is flash control circuit theory diagram of the present utility model.
Fig. 2 is the circuit diagram of flash control circuit one embodiment of the present utility model.
Embodiment
As shown in Figure 1, the utility model discloses a kind of double mode flash control circuit, it is characterized in that: comprise the first control module 1, the first switch module 2, the first constant flow module 3, the second control module 4, second switch module 5, the second constant flow module 6, photoflash lamp 7, described the first control module 1, described the first switch module 2, described the first constant flow module 3 is connected successively, described the second control module 4, described second switch module 5, described the second constant flow module 6 is connected successively, described the second constant flow module 6 inputs are connected with described the first constant flow module 3 outputs, described the second constant flow module 6 outputs are connected with described photoflash lamp 7.
As shown in Figure 2, this double mode flash control circuit comprises the 7th resistance R 7, the 8th resistance R 8, described the first switch module 2 comprises the first triode Q1, the second triode Q2, described second switch module 5 comprises the 3rd triode Q3, the 4th triode Q4, described the first control module 1 is connected with described the first triode Q1 base stage, described the first triode Q1 collector electrode is connected with described the second triode Q2 base stage, described the second triode Q2 collector electrode is connected with described the 7th resistance R 7 one end, described the 7th resistance R 7 other ends are connected with described the 8th resistance R 8 one end, described the 8th resistance R 8 other ends are connected with described photoflash lamp 7, described the second control module 4 is connected with described the 3rd triode Q3 base stage, described the 3rd triode Q3 collector electrode is connected with described the 4th triode Q4 base stage, described the 4th triode Q4 emitter is connected in described the 7th resistance R 7 one end, and described the 4th triode Q4 collector electrode is connected in described the 7th resistance R 7 other ends.
Described photoflash lamp 7 is LED photoflash lamp.
This double mode flash control circuit also comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, described first resistance R 1 one end is connected with described the first control module 1, and the first triode Q1 base stage is connected described in described first resistance R 1 other end; Described second resistance R 2 one end are connected with described the first triode Q1 collector electrode, described second resistance R 2 other ends are connected with described the second triode Q2 base stage, described the 4th resistance R 4 one end are connected with described second resistance R 2 other ends, and described the 4th resistance R 4 other ends are connected with described the second triode Q2 emitter; Described the 5th resistance R 5 one end are connected with described the second control module, and the 3rd triode Q3 base stage is connected described in described the 5th resistance R 5 other ends; Described the 6th resistance R 6 one end are connected with described the 3rd triode Q3 collector electrode, described the 6th resistance R 6 other ends are connected with described the 4th triode Q4 base stage, described the 3rd resistance R 3 one end connect described the 4th triode Q4 base stage, and described the 3rd resistance R 3 other ends connect respectively described the second triode Q2 collector electrode and described the 4th triode Q4 emitter.
The 7th resistance R 7 and the 8th resistance R 8 form current limliting constant-current circuit, work in torch pattern, the first control module 1 has been exported a high level signal, by the first resistance R 1, control the first triode Q1 conducting, in the time that the first triode Q1 base stage is high level, the first triode Q1 and the second triode Q2 conducting, be equivalent to the first switch module 2 and open, electric current arrives photoflash lamp 7 by the first switch module 2, the 7th resistance R 7 and the 8th resistance R 8, lights LED.The operating current of torch pattern (Touch pattern) photoflash lamp 7 is:
Torch pattern: (3.7-2.8V-0.1V)/(2.2 Europe, Europe+15)=0.8V/17.2R=46.5mA.
An other route the 3rd triode Q3 and the 4th triode Q3 form, and control the switch in constant current two R7 15 Europe, work in flash mode (Flash Mode).The second control module 4 has been exported a high level signal, by the 5th resistance R 5, control the 3rd triode Q3 conducting, in the time that the 3rd triode Q3 base stage is high level, the 3rd triode Q3 and the 4th triode Q4 conducting, be equivalent to second switch module 5 and open, the 7th resistance R 7 short circuits, electric current arrives photoflash lamp 7 through second switch module 5.The operating current of flash mode (Flash Mode) photoflash lamp 7 is:
Flash mode: (3.7V-2.8V-0.1Vx2)/2.2 Europe=0.7V/2.2R=318mA.
The utility model has been realized double mode switching and control, realize the possibility of low cost photoflash lamp, volume production has verified that stability meets indices, the utility model has reduced complete machine cost, simplify flash lamp circuit, met the requirement that client uses smart mobile phone and panel computer LED photoflash lamp, performance produces a desired effect with reducing costs all.
The invention also discloses a kind of terminal equipment, this terminal equipment comprises described double mode flash control circuit.
This terminal is outer for comprising shell, elastomeric element, protective sleeve, and described protective sleeve is wrapped in described outer surface of outer cover, and described elastomeric element is installed between described protective sleeve and described shell.
Described elastomeric element comprises spring or shell fragment, and described elastomeric element is multiple; Described protection is placed on flexible material and makes.
This terminal equipment comprises panel computer, mobile phone.
Protective sleeve coordinates with elastomeric element, prevents that terminal equipment from being collided and damaging.And protective sleeve is to be made up of flexible material, there is certain elasticity, further damp impacts power, better protects terminal equipment.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (8)
1. a double mode flash control circuit, it is characterized in that: comprise the first control module, the first switch module, the first constant flow module, the second control module, second switch module, the second constant flow module, photoflash lamp, described the first control module, described the first switch module, described the first constant flow module is connected successively, described the second control module, described second switch module, described the second constant flow module is connected successively, described the second constant flow module input is connected with described the first constant flow module output, described the second constant flow module output is connected with described photoflash lamp.
2. double mode flash control circuit according to claim 1, it is characterized in that: this double mode flash control circuit comprises the 7th resistance (R7), the 8th resistance (R8), described the first switch module comprises the first triode (Q1), the second triode (Q2), described second switch module comprises the 3rd triode (Q3), the 4th triode (Q4), described the first control module is connected with described the first triode (Q1) base stage, described the first triode (Q1) collector electrode is connected with described the second triode (Q2) base stage, described the second triode (Q2) collector electrode is connected with described the 7th resistance (R7) one end, described the 7th resistance (R7) other end is connected with described the 8th resistance (R8) one end, described the 8th resistance (R8) other end is connected with described photoflash lamp, described the second control module is connected with described the 3rd triode (Q3) base stage, described the 3rd triode (Q3) collector electrode is connected with described the 4th triode (Q4) base stage, described the 4th triode (Q4) emitter is connected in described the 7th resistance (R7) one end, and described the 4th triode (Q4) collector electrode is connected in described the 7th resistance (R7) other end.
3. double mode flash control circuit according to claim 2, is characterized in that: described photoflash lamp is LED photoflash lamp.
4. double mode flash control circuit according to claim 2, it is characterized in that: this double mode flash control circuit also comprises the first resistance (R1), the second resistance (R2), the 3rd resistance (R3), the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6), described the first resistance (R1) one end is connected with described the first control module, and the first triode (Q1) base stage is connected described in described the first resistance (R1) other end; Described the second resistance (R2) one end is connected with described the first triode (Q1) collector electrode, described the second resistance (R2) other end is connected with described the second triode (Q2) base stage, described the 4th resistance (R4) one end is connected with described the second resistance (R2) other end, and described the 4th resistance (R4) other end is connected with described the second triode (Q2) emitter; Described the 5th resistance (R5) one end is connected with described the second control module, and the 3rd triode (Q3) base stage is connected described in described the 5th resistance (R5) other end; Described the 6th resistance (R6) one end is connected with described the 3rd triode (Q3) collector electrode, described the 6th resistance (R6) other end is connected with described the 4th triode (Q4) base stage, described the 3rd resistance (R3) one end connects described the 4th triode (Q4) base stage, and described the 3rd resistance (R3) other end connects respectively described the second triode (Q2) collector electrode and described the 4th triode (Q4) emitter.
5. a terminal equipment, is characterized in that: this terminal equipment comprises the double mode flash control circuit described in claim 1 to 4 any one.
6. terminal equipment according to claim 5, is characterized in that: this terminal is outer for comprising shell, elastomeric element, protective sleeve, and described protective sleeve is wrapped in described outer surface of outer cover, and described elastomeric element is installed between described protective sleeve and described shell.
7. terminal equipment according to claim 6, is characterized in that: described elastomeric element comprises spring or shell fragment, and described elastomeric element is multiple; Described protection is placed on flexible material and makes.
8. terminal equipment according to claim 5, is characterized in that: this terminal equipment comprises panel computer, mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420150613.9U CN203788522U (en) | 2014-03-31 | 2014-03-31 | Dual mode flash lamp control circuit and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420150613.9U CN203788522U (en) | 2014-03-31 | 2014-03-31 | Dual mode flash lamp control circuit and terminal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788522U true CN203788522U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420150613.9U Expired - Fee Related CN203788522U (en) | 2014-03-31 | 2014-03-31 | Dual mode flash lamp control circuit and terminal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203788522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376421A (en) * | 2014-09-01 | 2016-03-02 | 深圳富泰宏精密工业有限公司 | Apparatus of controlling current, system and method thereof |
-
2014
- 2014-03-31 CN CN201420150613.9U patent/CN203788522U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376421A (en) * | 2014-09-01 | 2016-03-02 | 深圳富泰宏精密工业有限公司 | Apparatus of controlling current, system and method thereof |
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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 |
Granted publication date: 20140820 Termination date: 20200331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |