CN207251958U - A kind of linear constant current pipe bleeder circuit - Google Patents
A kind of linear constant current pipe bleeder circuit Download PDFInfo
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- CN207251958U CN207251958U CN201720787052.7U CN201720787052U CN207251958U CN 207251958 U CN207251958 U CN 207251958U CN 201720787052 U CN201720787052 U CN 201720787052U CN 207251958 U CN207251958 U CN 207251958U
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- constant current
- bleeder circuit
- led
- tube
- led component
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- 238000004134 energy conservation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of linear constant current bleeder circuit, including：Rectification circuit, the input terminal of rectification circuit are electrically connected with city；LED component, including one or more LED being connected in series, the input terminal of LED component and the output terminal of rectification circuit connect；Constant current tube, the S ends ground connection of constant current tube, the Cs ends of constant current tube are connected by examining the S ends of leakage resistance R3 and constant current tube；The D ends of constant current tube are connected in series by the output terminal of bleeder circuit and LED component, and bleeder circuit is used for the voltage for reducing constant current tube D S both ends.Constant current tube IC1 is reduced the pressure drop at its D S both ends using bleeder circuit the utility model proposes a kind of linear constant current bleeder circuit, realize hoisting power and improve the ability of anti surge voltage.
Description
Technical field
The utility model belongs to electronic drive circuit control technology field, and in particular to a kind of linear constant current bleeder circuit.
Background technology
LED is as a kind of efficient new light sources, since with long lifespan, energy consumption is low, energy conservation and environmental protection, is just being widely used in each
Field illuminates.
Linear constant current driving power is cost-effective, but there is also some it is fatal the shortcomings that, the constant current when network voltage raises
Pipe IC1 fevers are serious, seriously affect the reliability of linear power supply.
Utility model content
In order to overcome existing LED linear drive circuit technology Shortcomings, the utility model provides a kind of linear constant current
Bleeder circuit.
In order to achieve the above object, the technical solution of the utility model is as follows：
A kind of linear constant current bleeder circuit, including：Rectification circuit, the input terminal of rectification circuit are electrically connected with city；LED groups
Part, including one or more LED being connected in series, the input terminal of LED component and the output terminal of rectification circuit connect；Constant current tube,
The S ends ground connection of constant current tube, the Cs ends of constant current tube are connected by examining the S ends of leakage resistance R3 and constant current tube；The D ends of constant current tube are by dividing
The output terminal of volt circuit and LED component is connected in series, and bleeder circuit is used for the voltage for reducing constant current tube D-S both ends.
The utility model proposes a kind of linear constant current bleeder circuit, it makes constant current tube IC1 reduce its D-S using bleeder circuit
The pressure drop at both ends, realizes hoisting power and improves the ability of anti surge voltage.
Based on the above technical solutions, following improvement can also be done：
As preferable scheme, bleeder circuit includes：Field-effect tube Q1, resistance R1, resistance R2；The drain electrode of field-effect tube Q1
It is connected with LED component output terminal, the grid of field-effect tube Q1 is connected by resistance R1 with LED component output terminal, field-effect tube Q1
Grid be also grounded by resistance R2, the D ends of the source electrode of field-effect tube Q1 and constant current tube connect.
Using the above preferred scheme, the internal resistance RDS for making bleeder circuit using field-effect tube Q1 changes, such constant current
The voltage at pipe D-S both ends can follow the voltage change of grid and change.
As preferable scheme, resistance R1 is variable resistor.
Using the above preferred scheme, can the effective resistance value of regulation resistance R1, so as to adjust constant current tube D-S both ends
Voltage.
As preferable scheme, resistance R2 is variable resistor.
Using the above preferred scheme, can the effective resistance value of regulation resistance R2 so that bleeder circuit is more stable.
As preferable scheme, field-effect tube Q1 is VDMOS field-effect tube.
Using the above preferred scheme, performance is more preferably.
As preferable scheme, when LED component includes a LED, the input terminal of LED component is the anode of the LED,
The output terminal of LED component is the negative terminal of the LED；
As the LED of LED component including multiple series connection, the input terminal of LED component is the anode of first LED, LED component
Output terminal be last LED negative terminal.
Using the above preferred scheme, performance is stablized.
As preferable scheme, the voltage at constant current tube D-S both ends is identical with the voltage at bleeder circuit both ends.
Using the above preferred scheme, performance is stablized.
As preferable scheme, connected between rectification circuit and alternating current by multilevel decompression circuit, multilevel decompression circuit
For carrying out multilevel decompression to alternating current.
Using the above preferred scheme, performance is more stable.
As preferable scheme, connected between rectification circuit and alternating current by regulator circuit, regulator circuit is used to keep
Voltage is steady.
Using the above preferred scheme, performance is more stable.
As preferable scheme, connected between rectification circuit and LED component by storage battery.
Using the above preferred scheme, performance is more stable, even if alternating current disconnects suddenly, power supply will not suddenly disappear, and protects
Demonstrate,prove the stability of circuit.
Brief description of the drawings
Fig. 1 is a kind of one of structure diagram of linear constant current bleeder circuit that the utility model embodiment provides.
Fig. 2 is one of structure diagram of the bleeder circuit that the utility model embodiment provides and constant current tube.
Fig. 3 is a kind of second structural representation for linear constant current bleeder circuit that the utility model embodiment provides.
Fig. 4 is the second structural representation of the bleeder circuit that the utility model embodiment provides and constant current tube.
Wherein：1 rectification circuit, 2 LED components, 3 bleeder circuits.
Embodiment
Describe the preferred embodiment of the utility model in detail below in conjunction with the accompanying drawings.
In order to reach the purpose of this utility model, in a kind of some of embodiments of linear constant current bleeder circuit,
As illustrated in fig. 1 and 2, a kind of linear constant current bleeder circuit includes：Rectification circuit 1, LED component 2, constant current tube IC1 with
And bleeder circuit 3.
The input terminal of rectification circuit 1 is electrically connected with city.
LED component 2 includes multiple LED being connected in series, as shown in Figure 1, Dx1, Dx2 ..., Dxn, LED component 2
Input terminal is the anode of first LED (Dx1), and the output terminal of LED component 2 is the negative terminal of last LED (Dxn).LED component
2 input terminal is connected with the output terminal of rectification circuit 1.It is worth noting that, as n=1, i.e., when LED component 2 includes one
During LED (Dx1), the input terminal of LED component 2 is the anode of the LED (Dx1), and the output terminal of LED component 2 is the LED's (Dx1)
Negative terminal.
The S ends ground connection of constant current tube IC1, the Cs ends of constant current tube IC1 are connected by examining leakage resistance R3 with the S ends of constant current tube IC1,
Examine leakage resistance R3 setting continuous current sizes；Connected by bleeder circuit 3 with the output terminal of LED component 2 at the D ends of constant current tube IC1
Connection, bleeder circuit 3 are used for the voltage for reducing constant current tube D-S both ends.
The utility model proposes a kind of linear constant current bleeder circuit, it makes constant current tube IC1 reduce its D- using bleeder circuit 3
The pressure drop at S both ends, realizes hoisting power and improves the ability of anti surge voltage.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, bleeder circuit 3 includes：Field-effect tube Q1, resistance R1, resistance R2；The drain electrode of field-effect tube Q1 with
2 output terminal of LED component connects, and the grid of field-effect tube Q1 is connected by resistance R1 with 2 output terminal of LED component, field-effect tube Q1
Grid be also grounded by resistance R2, the D ends of the source electrode of field-effect tube Q1 and constant current tube connect.Field-effect tube Q1 is VDMOS
Effect pipe.
Resistance R1 is variable resistor, can the effective resistance value of regulation resistance R1, so as to adjust the electricity at constant current tube D-S both ends
Pressure.
The utility model is using the internal resistance (RDS) of field-effect tube Q1 by grid (G) voltage-controlled principle, resistance R1 connections
Between the drain electrode (D) of scene effect pipe Q1 and grid (G), resistance R2 is connected to field-effect tube Q1 grids (G) between ground, works as leakage
Grid (G) control terminal voltage change is made by resistance R1 at the same time during pole (D) voltage change, makes the internal resistance (RDS) of field-effect tube Q1
Change, the voltage at such constant current tube D-S both ends can follow the voltage change of grid and change.
The voltage at constant current tube D-S both ends is identical with the voltage at 3 both ends of bleeder circuit, and the resistance value of adjustment resistance R1 makes partial pressure
Circuit 3 and constant current tube IC1 voltage drops respectively distribute 50% voltage.
The utility model provides a kind of linear constant current pipe bleeder circuit, by the input that LED component 2 is connected behind commercial power rectification
End, bleeder circuit 3 connect the output terminal of LED component 2, the source electrode of constant current tube D ends connection field-effect tube Q1, the connection of constant current tube CS ends
Inspection leakage resistance R3 plays constant current, constant current tube S ends connection ground.
The utility model advantage is：When power grid input voltage raises, the pressure drop at constant current tube D-S both ends is by field-effect tube
Q1 follows 50% pressure drop voltage of distribution automatically, reduces the temperature rise of constant current tube IC1, the ability that extension constant current tube output power 2 is accompanied can
Realize Linear Great Power Driver, than realizing that Linear Great Power driving improves reliability with more constant current tube parallel methods, reduce
Cost, while increase circuit anti surge voltage ability.Meanwhile the structure of the utility model is simpler.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, resistance R2 is variable resistor.
Using the above preferred scheme, can the effective resistance value of regulation resistance R2 so that bleeder circuit is more stable.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, is connected between rectification circuit 1 and alternating current by multilevel decompression circuit, and multilevel decompression circuit is used
In to alternating current progress multilevel decompression.
Using the above preferred scheme, performance is more stable.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, is connected between rectification circuit and alternating current by regulator circuit, and regulator circuit is used to keep voltage
Steadily.
Using the above preferred scheme, performance is more stable.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, is connected between rectification circuit 1 and LED component 2 by storage battery.
Using the above preferred scheme, performance is more stable, even if alternating current disconnects suddenly, power supply will not suddenly disappear, and protects
Demonstrate,prove the stability of circuit.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, bleeder circuit can connect built-in, the external metal-oxide-semiconductor of any watt level or size of current
Constant current tube IC1.
As shown in Figures 3 and 4, in order to further optimize the implementation result of the utility model, in other embodiment
In, remaining feature technology is identical, and difference is, a kind of linear constant current pipe bleeder circuit disclosed in the present application includes：Two
The bleeder circuit being connected in series, i.e., be in series with bleeder circuit 4 between bleeder circuit 3 and constant current tube, and bleeder circuit 4 includes：
Effect pipe Q2, resistance R4, resistance R5；The drain electrode of field-effect tube Q2 is connected with the source electrode of field-effect tube Q1, the grid of field-effect tube Q2
Pole is connected by resistance R4 with the source electrode of field-effect tube Q1, and the grid of field-effect tube Q2 is also grounded by resistance R5, field-effect tube
The source electrode of Q2 and the D ends of constant current tube connect.Field-effect tube Q2 is VDMOS field-effect tube.
Using the structure, the utility model carries out multilevel voltage reduction, more stable.
More than be only the utility model preferred embodiment, it is noted that for those of ordinary skill in the art
For, on the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this
The protection domain of utility model.
Claims (10)
1. a kind of linear constant current pipe bleeder circuit, including：
Rectification circuit, the input terminal of the rectification circuit are electrically connected with city；
LED component, including one or more LED being connected in series, the input terminal of the LED component are defeated with the rectification circuit
Outlet connects；
Constant current tube, the S ends ground connection of the constant current tube, the Cs ends of the constant current tube are by examining the S of leakage resistance R3 and the constant current tube
End connection；
It is characterized in that, the D ends of the constant current tube are connected in series by bleeder circuit and the output terminal of the LED component, it is described
Bleeder circuit is used for the voltage for reducing the constant current tube D-S both ends.
2. linear constant current pipe bleeder circuit according to claim 1, it is characterised in that the bleeder circuit includes：Field effect
Should pipe Q1, resistance R1, resistance R2；
The drain electrode of field-effect tube Q1 is connected with the LED component output terminal, the grid of field-effect tube Q1 by resistance R1 with it is described
LED component output terminal connects, and the grid of field-effect tube Q1 is also grounded by resistance R2, the source electrode of field-effect tube Q1 and the constant current
The D ends connection of pipe.
3. linear constant current pipe bleeder circuit according to claim 2, it is characterised in that the resistance R1 is variable resistor.
4. linear constant current pipe bleeder circuit according to claim 2, it is characterised in that the resistance R2 is variable resistor.
5. according to claim 2-4 any one of them linear constant current pipe bleeder circuit it is characterized in that, the field-effect tube Q1
For VDMOS field-effect tube.
6. linear constant current pipe bleeder circuit according to claim 5, it is characterised in that when LED component includes a LED
When, the input terminal of the LED component is the anode of the LED, and the output terminal of the LED component is the negative terminal of the LED；
As the LED of LED component including multiple series connection, the input terminal of the LED component is the anode of first LED, the LED
The output terminal of component is the negative terminal of last LED.
7. linear constant current pipe bleeder circuit according to claim 5, it is characterised in that the electricity at the constant current tube D-S both ends
Pressure is identical with the voltage at the bleeder circuit both ends.
8. linear constant current pipe bleeder circuit according to claim 7, it is characterised in that in the rectification circuit and the city
Connected between electricity by multilevel decompression circuit, the multilevel decompression circuit is used to carry out multilevel decompression to alternating current.
9. linear constant current pipe bleeder circuit according to claim 7, it is characterised in that in the rectification circuit and the city
Connected between electricity by regulator circuit, the regulator circuit is used to keep voltage steady.
10. linear constant current pipe bleeder circuit according to claim 7, it is characterised in that the rectification circuit with it is described
Connected between LED component by storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720787052.7U CN207251958U (en) | 2017-06-30 | 2017-06-30 | A kind of linear constant current pipe bleeder circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720787052.7U CN207251958U (en) | 2017-06-30 | 2017-06-30 | A kind of linear constant current pipe bleeder circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207251958U true CN207251958U (en) | 2018-04-17 |
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ID=61877342
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720787052.7U Expired - Fee Related CN207251958U (en) | 2017-06-30 | 2017-06-30 | A kind of linear constant current pipe bleeder circuit |
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| Country | Link |
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| CN (1) | CN207251958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107182150A (en) * | 2017-06-30 | 2017-09-19 | 苏州菲达旭微电子有限公司 | A kind of linear constant current pipe bleeder circuit |
-
2017
- 2017-06-30 CN CN201720787052.7U patent/CN207251958U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107182150A (en) * | 2017-06-30 | 2017-09-19 | 苏州菲达旭微电子有限公司 | A kind of linear constant current pipe bleeder circuit |
| CN107182150B (en) * | 2017-06-30 | 2023-10-24 | 苏州菲达旭微电子有限公司 | Linear constant current tube voltage dividing circuit |
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| 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: 20180417 |