CN206323614U - A kind of four illuminating lamp driving circuits - Google Patents
A kind of four illuminating lamp driving circuits Download PDFInfo
- Publication number
- CN206323614U CN206323614U CN201720019805.XU CN201720019805U CN206323614U CN 206323614 U CN206323614 U CN 206323614U CN 201720019805 U CN201720019805 U CN 201720019805U CN 206323614 U CN206323614 U CN 206323614U
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- CN
- China
- Prior art keywords
- illuminating lamp
- connection
- resistance
- electric capacity
- voltage
- 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
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Abstract
The utility model discloses a kind of four illuminating lamp driving circuits, including driving chip U3, resistance R1, resistance R4, resistance R6, resistance R7, electric capacity C8, voltage-regulator diode D1, voltage-regulator diode D2, illuminating lamp LED1, illuminating lamp LED2, illuminating lamp LED3, illuminating lamp LED4, insulating gate type field effect tube Q1, inductance L1, the utility model is powered by 8.4V, 4 illuminating lamp series connection are realized to light illuminating lamp, the work of circuit energy normal table, so that consistent all the time by the electric current of 4 illuminating lamps, long service life, circuit-board laying-out is convenient.
Description
Technical field
The utility model is related to a kind of four illuminating lamp driving circuits.
Background technology
White-light illuminating lamp LED positive drive voltage is in 3.2-3.6V, and electric current is 1.5A, and total voltage is 8.4V.Normally
In the case of 4 series connection schemes be irrealizable, traditional scheme be by 4 LEDs either 2 strings 2 in parallel simultaneously.In parallel lacks
Point is that the total current of circuit is excessive, and circuit total current in parallel 4 illuminating lamp LED is 6A, and 22 circuit total currents simultaneously of string are
3A, this make it that the width of wire increases, and bad layout can be arranged when designing circuit.And electric current conference causes wire with leading
Interference increase between line, element and element, influences the performance of circuit.Each illuminating lamp LED forward conduction voltage also has micro-
Small difference, this electric current for causing to flow to each illuminating lamp LED during parallel connection is differed.The PN junction of illuminating lamp has negative temperature system
Number, declines, so that temperature rises faster, illuminating lamp easily burns with the rising forward conduction voltage of temperature.When burning first
After lamp, other several lamps can all burn quickly.Therefore short life, designs the bad layout of circuit, poor performance.
Utility model content
The purpose of this utility model is overcome the shortcomings of in existing product there is provided one kind from four illuminating lamp driving circuits.
In order to achieve the above object, the utility model is achieved through the following technical solutions：
A kind of four illuminating lamp driving circuits, including driving chip U3, resistance R1, resistance R4, resistance R6, resistance R7, electricity
Hold C8, voltage-regulator diode D1, voltage-regulator diode D2, illuminating lamp LED1, illuminating lamp LED2, illuminating lamp LED3, illuminating lamp LED4, absolutely
Edge grid-type FET Q1, inductance L1, the inductance L1 one end connection power supply VCC, the power supply VCC is 8.4V, the electricity
Feel L1 other end connection insulating gate type field effect tube Q1 D poles, the S poles of the insulating gate type field effect tube Q1 pass through resistance R4
Connect earth signal GND, the insulating gate type field effect tube Q1 S poles connection driving chip U3 6 pins, the insulated-gate type
Effect pipe Q1 D poles connection driving chip U3 5 pins, the 3 pins connection resistance R1 of driving chip U3 one end is described
The resistance R1 other end is connected by electric capacity C8 connection earth signals GND, the other end of the inductance L1 by voltage-regulator diode D1
Voltage-regulator diode D2 negative pole, the positive pole connection driving chip U3 of the voltage-regulator diode D2 4 pins, the voltage-regulator diode
D2 positive pole connection resistance R6 one end, the other end of the resistance R6 passes through resistance R7 connection earth signals GND, the voltage stabilizing two
Pole pipe D2 positive pole connection illuminating lamp LED1 positive pole, the negative pole of the illuminating lamp LED1 passes through illuminating lamp LED2 connection illuminating lamps
LED3 positive pole, the negative pole connection illuminating lamp LED3 of illuminating lamp LED3 positive pole, the negative pole connection of the illuminating lamp LED3
The resistance R6 other end.
The utility model also negative pole including electric capacity C7, the voltage-regulator diode D2 passes through electric capacity C7 connection earth signals GND.
The utility model also 2 pins including electric capacity C6, the driving chip U3 pass through electric capacity C6 connection earth signals GND.
The utility model also 7 pins including electric capacity C9, the driving chip U3 pass through electric capacity C9 connection earth signals GND.
8.4V power supplys described in the utility model are by dry cell power supply.
Driving chip U3 described in the utility model model QX5305.
Electric capacity C7 described in the utility model is polar capacitor.
Insulating gate type field effect tube Q1 described in the utility model is N-channel insulating gate type field effect tube.
The beneficial effects of the utility model are as follows：The utility model is powered by 8.4V, is realized 4 illuminating lamp series connection and is come
Light illuminating lamp, the work of circuit energy normal table so that consistent all the time by the electric current of 4 illuminating lamps, long service life, electricity
Road plate layout is convenient.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The technical solution of the utility model is described further with reference to Figure of description：
As shown in figure 1, a kind of four illuminating lamp driving circuits, including driving chip U3, resistance R1, resistance R4, resistance R6,
Resistance R7, electric capacity C8, voltage-regulator diode D1, voltage-regulator diode D2, illuminating lamp LED1, illuminating lamp LED2, illuminating lamp LED3, illumination
Lamp LED4, insulating gate type field effect tube Q1, inductance L1, the inductance L1 one end connection power supply VCC, the power supply VCC are
8.4V, the inductance L1 other end connection insulating gate type field effect tube Q1 D poles, the S of the insulating gate type field effect tube Q1
Pole passes through resistance R4 connection earth signals GND, the S poles connection driving chip U3 of the insulating gate type field effect tube Q1 6 pins, institute
State insulating gate type field effect tube Q1 D poles connection driving chip U3 5 pins, the 3 pins connection resistance of the driving chip U3
R1 one end, the other end of the resistance R1 is by electric capacity C8 connection earth signals GND, and the other end of the inductance L1 passes through voltage stabilizing
Diode D1 connection voltage-regulator diodes D2 negative pole, the positive pole connection driving chip U3 of the voltage-regulator diode D2 4 pins, institute
Voltage-regulator diode D2 positive pole connection resistance R6 one end is stated, the other end of the resistance R6 passes through resistance R7 connection earth signals
GND, the voltage-regulator diode D2 positive pole connection illuminating lamp LED1 positive pole, the negative pole of the illuminating lamp LED1 pass through illuminating lamp
LED2 connection illuminating lamps LED3 positive pole, the negative pole connection illuminating lamp LED3 of illuminating lamp LED3 positive pole, the illuminating lamp
The LED3 negative pole connection resistance R6 other end.
As shown in figure 1, the utility model also includes electric capacity C7, the negative pole of the voltage-regulator diode D2 is connected by electric capacity C7
Earth signal GND.
As shown in figure 1, the utility model also includes electric capacity C6,2 pins of the driving chip U3 are connected by electric capacity C6
Earth signal GND.
As shown in figure 1, the utility model also includes electric capacity C9,7 pins of the driving chip U3 are connected by electric capacity C9
Earth signal GND.
As shown in figure 1,8.4V power supplys described in the utility model are by dry cell power supply.
As shown in figure 1, driving chip U3 described in the utility model model QX5305.As shown in figure 1, the utility model
The electric capacity C7 is polar capacitor.
As shown in figure 1, insulating gate type field effect tube Q1 described in the utility model is N-channel insulating gate type field effect tube.
8.4V power supplys are drawn high 12V by the utility model by inductance L1, are that the utility model is powered, are passed through driving chip
U3 realizes 4 illuminating lamp series connection to light illuminating lamp.
The utility model is powered by 8.4V, realizes 4 illuminating lamp series connection to light illuminating lamp, circuit energy normal table
Work so that consistent all the time by the electric currents of 4 illuminating lamps, long service life, circuit-board laying-out is convenient.
It should be noted that listed above is only a kind of specific embodiment of the present utility model.Obviously, the utility model
Above example is not limited to, there can also be many deformations.In a word, one of ordinary skill in the art can disclose from the utility model
Content all deformations for directly exporting or associate, be considered as the utility model.
Claims (8)
1. a kind of four illuminating lamp driving circuits, it is characterised in that including driving chip U3, resistance R1, resistance R4, resistance R6,
Resistance R7, electric capacity C8, voltage-regulator diode D1, voltage-regulator diode D2, illuminating lamp LED1, illuminating lamp LED2, illuminating lamp LED3, illumination
Lamp LED4, insulating gate type field effect tube Q1, inductance L1, the inductance L1 one end connection power supply VCC, the power supply VCC are
8.4V, the inductance L1 other end connection insulating gate type field effect tube Q1 D poles, the S of the insulating gate type field effect tube Q1
Pole passes through resistance R4 connection earth signals GND, the S poles connection driving chip U3 of the insulating gate type field effect tube Q1 6 pins, institute
State insulating gate type field effect tube Q1 D poles connection driving chip U3 5 pins, the 3 pins connection resistance of the driving chip U3
R1 one end, the other end of the resistance R1 is by electric capacity C8 connection earth signals GND, and the other end of the inductance L1 passes through voltage stabilizing
Diode D1 connection voltage-regulator diodes D2 negative pole, the positive pole connection driving chip U3 of the voltage-regulator diode D2 4 pins, institute
Voltage-regulator diode D2 positive pole connection resistance R6 one end is stated, the other end of the resistance R6 passes through resistance R7 connection earth signals
GND, the voltage-regulator diode D2 positive pole connection illuminating lamp LED1 positive pole, the negative pole of the illuminating lamp LED1 pass through illuminating lamp
LED2 connection illuminating lamps LED3 positive pole, the negative pole connection illuminating lamp LED3 of illuminating lamp LED3 positive pole, the illuminating lamp
The LED3 negative pole connection resistance R6 other end.
2. a kind of four illuminating lamp driving circuits according to claim 1, it is characterised in that described steady also including electric capacity C7
Pressure diode D2 negative pole passes through electric capacity C7 connection earth signals GND.
3. a kind of four illuminating lamp driving circuits according to claim 1, it is characterised in that also including electric capacity C6, the drive
Dynamic chip U3 2 pins pass through electric capacity C6 connection earth signals GND.
4. a kind of four illuminating lamp driving circuits according to claim 1, it is characterised in that also including electric capacity C9, the drive
Dynamic chip U3 7 pins pass through electric capacity C9 connection earth signals GND.
5. a kind of four illuminating lamp driving circuits according to claim 1, it is characterised in that the 8.4V power supplys are by dry cell
Power supply.
6. a kind of four illuminating lamp driving circuits according to claim 1, it is characterised in that the model of the driving chip U3
For QX5305.
7. a kind of four illuminating lamp driving circuits according to claim 2, it is characterised in that the electric capacity C7 is polarity electricity
Hold.
8. a kind of four illuminating lamp driving circuits according to claim 1, it is characterised in that the insulating gate type field effect tube
Q1 is N-channel insulating gate type field effect tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720019805.XU CN206323614U (en) | 2017-01-09 | 2017-01-09 | A kind of four illuminating lamp driving circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720019805.XU CN206323614U (en) | 2017-01-09 | 2017-01-09 | A kind of four illuminating lamp driving circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206323614U true CN206323614U (en) | 2017-07-11 |
Family
ID=59261912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720019805.XU Expired - Fee Related CN206323614U (en) | 2017-01-09 | 2017-01-09 | A kind of four illuminating lamp driving circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206323614U (en) |
-
2017
- 2017-01-09 CN CN201720019805.XU patent/CN206323614U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170711 Termination date: 20210109 |