CN204014148U - A kind of modified model cold light piece driving circuit - Google Patents
A kind of modified model cold light piece driving circuit Download PDFInfo
- Publication number
- CN204014148U CN204014148U CN201420405465.0U CN201420405465U CN204014148U CN 204014148 U CN204014148 U CN 204014148U CN 201420405465 U CN201420405465 U CN 201420405465U CN 204014148 U CN204014148 U CN 204014148U
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- cold light
- capacitor
- chip
- driving circuit
- inductance
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Abstract
The utility model discloses a kind of modified model cold light piece driving circuit, comprises and drives chip D355B, inductance L and capacitor C 0, C1; Drive chip D355B to have for connecting the control end and the output being connected for cold light film load of PIC single-chip microcomputer, also there is two current controling ends, two frequency control terminals, power end and earth terminal; Inductance L is connected between two current controling ends that drive chip D355B, and capacitor C 1 is connected between two frequency control terminals that drive chip D355B; Power end divides two-way, and a road meets VCC, and another road connects the rear ground connection of capacitor C 0.Compared with prior art, the whole drive circuit of the utility model has reduced component number, simplified circuit, for PCB circuit board is saved more spaces, optimized the layout of components and parts and cabling, improved anti-High-frequency Interference ability, more stable output voltage is provided, the conversion efficiency of electric energy is high, has reached cost-saving, has improved efficiency and jamproof excellent effect.
Description
Technical field
The utility model relates to drive circuit technical field, specifically refers to a kind of modified model cold light piece driving circuit.
Background technology
Existing cold light piece driving circuit, as shown in Figure 1, comprises that chip DJ3009 drives chip, inductance L 0, capacitor C 0, diode D0, triode Q1 and Q2, capacitor C 1, C2, C3, C4.DJ3009 connects PIC single-chip microcomputer by the 2nd pin, the work of circuit by PIC Single-chip Controlling DJ3009 with stop.The 8th pin of DJ3009 is connected on the base stage of triode Q1, controls the work of triode.Cold light film load is connected on interface J0.The BUCK circuit that is formed typical DC-DC by L0, C0 and Q1, this Switching Power Supply easily produces ripple current, and the electric current of output is unstable, needs very large C0 or L0 to suppress ripple current, and poor anti jamming capability, should not be used in high-frequency circuit.And all components and parts are various, need more cost and pcb board space, the conversion efficiency of electric energy is low, is unfavorable for energy-conserving and environment-protective.
Utility model content
The modified model cold light piece driving circuit that provides a kind of height integrated is provided the purpose of this utility model, have compared to existing technology cost-saving, improve efficiency and anti-interference texts.
In order to reach above-mentioned purpose, solution of the present utility model is:
A modified model cold light piece driving circuit, comprises and drives chip D355B, inductance L and capacitor C 0, C1; Drive chip D355B to have for connecting the control end and the output being connected for cold light film load of PIC single-chip microcomputer, also there is two current controling ends, two frequency control terminals, power end and earth terminal; Inductance L is connected between two current controling ends that drive chip D355B, and capacitor C 1 is connected between two frequency control terminals that drive chip D355B; Power end divides two-way, and a road meets VCC, and another road connects the rear ground connection of capacitor C 0.
Ground connection after connecting interface J0 on described output, interface J0 connects for cold light film load.
Adopt after such scheme, this Novel photo is for the beneficial effect of prior art: cold light film circuit of the present utility model adopts highly integrated drive circuit, adopt and drive chip D355B, by inductance L, control the size of output current, by 1 pair of power supply of capacitor C, carry out filtering, by capacitor C 1, control the frequency of cold light film output.By the control end to D355B chip, control the bright dark of cold light film.With prior art, whole drive circuit has reduced component number, simplified circuit, for PCB circuit board is saved more spaces, optimized the layout of components and parts and cabling, improved anti-High-frequency Interference ability, more stable output voltage is provided, the conversion efficiency of electric energy is high, has reached cost-saving, has improved efficiency and jamproof excellent effect.
Accompanying drawing explanation
Fig. 1 is the cold light piece driving circuit schematic diagram of prior art;
Fig. 2 is this novel cold light piece driving circuit schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, this case is described in further detail.
This case relates to a kind of modified model cold light piece driving circuit, as shown in Figure 2, comprises and drives chip D355B, inductance L and capacitor C 0, C1.
Drive chip D355B to there are 8 pins, there is earth terminal (pin 1), two current controling ends (pin 2,4), output (pin 3), power end (pin 5), two frequency control terminals (pin 6,7) and control end (pin 8).
Drive in described each leads ends of chip D355B earth terminal (pin 1) ground connection; Between two current controling ends (pin 2,4), be connected with inductance L; Ground connection after output (pin 3) connecting interface J0, J0 is for accessing for cold light film load; Power end (pin 5) minute two-way, a road meets VCC (+1.5V), and another road connects the rear ground connection of capacitor C 0; Between two frequency control terminals (pin 6,7), connect capacitor C 1; Control end (pin 8) is for being connected with PIC single-chip microcomputer.
Described cold light piece driving circuit, capacitor C 0 is used for power supply to carry out filtering, and inductance L is for selecting the size of output current, and capacitor C 1 is used for selecting the frequency of cold light film output.By the control end of D355B chip (pin 8) being controlled to the bright dark of cold light film, when the 8th pin is high level, cold light film is extinguished; When the 8th pin is low level, cold light film is bright.
Cold light film circuit of the present utility model, compared with prior art, adopt highly integrated drive circuit, reduced component number, greatly simplified circuit, for PCB circuit board is saved more spaces, optimized the layout of components and parts and cabling, can improve anti-High-frequency Interference ability, bring more stable output voltage, the conversion efficiency of electric energy is also improved simultaneously.
The foregoing is only this novel preferred embodiment, all equalizations of doing with this novel claim scope change and modify, and all should belong to the scope of this novel claim.
Claims (2)
1. a modified model cold light piece driving circuit, is characterized in that: comprise and drive chip D355B, inductance L and capacitor C 0, C1; Drive chip D355B to have for connecting the control end and the output being connected for cold light film load of PIC single-chip microcomputer, also there is two current controling ends, two frequency control terminals, power end and earth terminal; Inductance L is connected between two current controling ends that drive chip D355B, and capacitor C 1 is connected between two frequency control terminals that drive chip D355B; Power end divides two-way, and a road meets VCC, and another road connects the rear ground connection of capacitor C 0.
2. a kind of modified model cold light piece driving circuit as claimed in claim 1, is characterized in that: ground connection after connecting interface J0 on described output, interface J0 connects for cold light film load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405465.0U CN204014148U (en) | 2014-07-22 | 2014-07-22 | A kind of modified model cold light piece driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405465.0U CN204014148U (en) | 2014-07-22 | 2014-07-22 | A kind of modified model cold light piece driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204014148U true CN204014148U (en) | 2014-12-10 |
Family
ID=52054084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420405465.0U Expired - Fee Related CN204014148U (en) | 2014-07-22 | 2014-07-22 | A kind of modified model cold light piece driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204014148U (en) |
-
2014
- 2014-07-22 CN CN201420405465.0U patent/CN204014148U/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: 20141210 Termination date: 20160722 |