CN206878798U - A kind of Darlington transistor drive circuit - Google Patents
A kind of Darlington transistor drive circuit Download PDFInfo
- Publication number
- CN206878798U CN206878798U CN201720566433.2U CN201720566433U CN206878798U CN 206878798 U CN206878798 U CN 206878798U CN 201720566433 U CN201720566433 U CN 201720566433U CN 206878798 U CN206878798 U CN 206878798U
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- darlington transistor
- resistance
- drive circuit
- triode
- electric capacity
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Abstract
Transistor drive circuit is the utility model is related to, more particularly to a kind of Darlington transistor drive circuit.The circuit includes triode Q1, Darlington transistor Q2, electric capacity C1, resistance R3, and the base stage of the triode Q1 is connected with control signal Ctrl, and its colelctor electrode is connected with power supply VCC, its grounded emitter；The base stage of the Darlington transistor Q2 is connected with triode Q1 colelctor electrode, and its grounded emitter, its colelctor electrode is connected with electric capacity C1 one end, and the other end of the electric capacity C1 is connected with resistance R3 one end, and the other end of the resistance R3 is connected with triode Q1 base stage.The utility model is compared with general Darlington transistor drive circuit, low-power transistor is added to be used to drive Darlington transistor circuit, and the switching speed of resistance, electric capacity for accelerating Darlington transistor is added, reduce switching power loss so as to extend the service life of power tube.
Description
Technical field
Transistor drive circuit is the utility model is related to, more particularly to a kind of Darlington transistor drive circuit.
Background technology
Darlington transistor is a kind of multiple tube.He connects two triodes, to form an equivalent new triode.This
Only the multiplication factor of equivalent triode is the product of both originals, therefore its feature is that multiplication factor is very high.The work of Darlington transistor
Be usually amplify very small signal, such as high-power switching circuit in highly sensitive amplifying circuit.
Darlington transistor has the characteristics that multiplication factor is high, driving current is big, high sensitivity, thus it is conventional be used for it is high-power
On-off circuit, electric machine speed regulation, inverter circuit, driving miniature relay and driving LED intelligent display screens etc..
Existing Darlington transistor drive circuit is because using using late-class circuit is directly driven, such Darlington transistor switchs
The speed of contactor is slow, and power consumption can increase therefore can greatly reduce the life-span of element during switch, and it is unnecessary that resource is caused
Waste.
Utility model content
The utility model provides a kind of new Darlington transistor drive circuit, it is intended to solves existing Darlington transistor on-off circuit and opens
Close the problem of speed is slow, and power consumption is big.
The utility model provides a kind of new Darlington transistor drive circuit, including triode Q1, Darlington transistor Q2, electric capacity
C1, resistance R3, the base stage of the triode Q1 are connected with control signal Ctrl, and its colelctor electrode is connected with power supply VCC, its emitter stage
Ground connection；The base stage of the Darlington transistor Q2 is connected with triode Q1 colelctor electrode, its grounded emitter, its colelctor electrode and electric capacity C1
One end connection, the other end of the electric capacity C1 is connected with resistance R3 one end, the other end and triode Q1 of the resistance R3
Base stage connection.
As further improvement of the utility model, one end that the circuit includes electric capacity C2, the electric capacity C2 connects three poles
Pipe Q1 base stage, its other end connecting triode Q1 colelctor electrode.
As further improvement of the utility model, the electric capacity C2 is speed-up capacitor.
As further improvement of the utility model, the circuit includes resistance R1, the resistance R1 one end connection control
Signal Ctrl, its other end connecting triode Q1 base stage.
As further improvement of the utility model, one end that the circuit includes resistance R2, the resistance R2 connects three poles
Pipe Q1 base stage, its other end connecting triode Q1 emitter stage.
As further improvement of the utility model, the circuit includes resistance R4, the resistance R4 one end connection power supply
VCC, its other end connecting triode Q1 colelctor electrode.
As further improvement of the utility model, the circuit includes load, the collection of the load connection Darlington transistor Q2
Electrode.
As further improvement of the utility model, the power supply VCC is 5V power supply.
The beneficial effects of the utility model are：The utility model adds compared with general Darlington transistor drive circuit
Low-power transistor is used to drive Darlington transistor circuit, and adds the switching speed of resistance, electric capacity for accelerating Darlington transistor,
Reduce switching power loss so as to extend the service life of power tube.
Brief description of the drawings
Fig. 1 is a kind of circuit structure diagram of new Darlington transistor drive circuit of the utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.
As shown in figure 1, a kind of new Darlington transistor drive circuit of the present utility model, including triode Q1, Darlington transistor
Q2, electric capacity C1, resistance R3, triode Q1 base stage are connected with control signal Ctrl, and its colelctor electrode is connected with power supply VCC, and it is sent out
Emitter grounding；Darlington transistor Q2 base stage is connected with triode Q1 colelctor electrode, its grounded emitter, its colelctor electrode and electric capacity C1
One end connection, the electric capacity C1 other end be connected with resistance R3 one end, the resistance R3 other end and triode Q1 base stage company
Connect.
Control signal controls high-power darlington pipe Q2 switch, R3 by controlling low-power transistor Q1 in the design
It is to feed back to triode Q1 base stage as output with C1, effect is similarly the switching speed for accelerating triode Q1, and extension reaches woods
Pipe Q2 life-span and the overall performance of circuit.
This drive circuit also includes electric capacity C2, electric capacity C2 one end connecting triode Q1 base stage, its other end connection three
Pole pipe Q1 colelctor electrode.Electric capacity C2 is speed-up capacitor, accelerates Q2 switching speed, Q1 pipes consumption is reduced, so as to extend the Q1 life-spans.
This drive circuit includes resistance R1, resistance R1 one end connection control signal Ctrl, its other end connecting triode
Q1 base stage.
This drive circuit includes resistance R2, resistance R2 one end connecting triode Q1 base stage, and its other end connects three poles
Pipe Q1 emitter stage.
R1 is used to limit Q1 base currents, and R2 effects are base charges when releasing off state, allow Q1 in low level
Keep cut-off state.
This drive circuit also includes resistance R4, resistance R4 one end connection power supply VCC, its other end connecting triode Q1's
Colelctor electrode.R4 effects are Q1 colelctor electrode current limliting and Q2 base stage current limliting.
This drive circuit includes load, load connection Darlington transistor Q2 colelctor electrode.
Power supply VCC is preferably 5V power supply in whole circuit.
This new Darlington transistor drive circuit adds low-power transistor and is used to drive Darlington transistor circuit, and adds
Resistance, electric capacity are used for the switching speed for accelerating Darlington transistor, reduce switching power loss so as to extend the service life of power tube.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (8)
1. a kind of new Darlington transistor drive circuit, it is characterised in that including triode Q1, Darlington transistor Q2, electric capacity C1, resistance
R3, the base stage of the triode Q1 are connected with control signal Ctrl, and its colelctor electrode is connected with power supply VCC, its grounded emitter；Institute
The base stage for stating Darlington transistor Q2 is connected with triode Q1 colelctor electrode, its grounded emitter, its colelctor electrode and electric capacity C1 one end
Connection, the other end of the electric capacity C1 are connected with resistance R3 one end, the other end of the resistance R3 and triode Q1 base stage
Connection.
2. new Darlington transistor drive circuit according to claim 1, it is characterised in that including electric capacity C2, the electric capacity
C2 one end connecting triode Q1 base stage, its other end connecting triode Q1 colelctor electrode.
3. new Darlington transistor drive circuit according to claim 2, it is characterised in that the electric capacity C2 is electric to accelerate
Hold.
4. new Darlington transistor drive circuit according to claim 1, it is characterised in that including resistance R1, the resistance
R1 one end connection control signal Ctrl, its other end connecting triode Q1 base stage.
5. new Darlington transistor drive circuit according to claim 1, it is characterised in that including resistance R2, the resistance
R2 one end connecting triode Q1 base stage, its other end connecting triode Q1 emitter stage.
6. new Darlington transistor drive circuit according to claim 1, it is characterised in that including resistance R4, the resistance
R4 one end connection power supply VCC, its other end connecting triode Q1 colelctor electrode.
7. new Darlington transistor drive circuit according to claim 1, it is characterised in that including load, the load connects
Connect Darlington transistor Q2 colelctor electrode.
8. the new Darlington transistor drive circuit according to any one of claim 1 to 7, it is characterised in that the power supply VCC
For 5V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566433.2U CN206878798U (en) | 2017-05-19 | 2017-05-19 | A kind of Darlington transistor drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566433.2U CN206878798U (en) | 2017-05-19 | 2017-05-19 | A kind of Darlington transistor drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206878798U true CN206878798U (en) | 2018-01-12 |
Family
ID=61340227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720566433.2U Active CN206878798U (en) | 2017-05-19 | 2017-05-19 | A kind of Darlington transistor drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206878798U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111313883A (en) * | 2020-02-26 | 2020-06-19 | 中国电子科技集团公司第五十八研究所 | Power driving circuit based on bipolar device |
| WO2023225024A1 (en) | 2022-05-16 | 2023-11-23 | Einsted Corporation | System and method for capturing and converting greenhouse gases |
-
2017
- 2017-05-19 CN CN201720566433.2U patent/CN206878798U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111313883A (en) * | 2020-02-26 | 2020-06-19 | 中国电子科技集团公司第五十八研究所 | Power driving circuit based on bipolar device |
| WO2023225024A1 (en) | 2022-05-16 | 2023-11-23 | Einsted Corporation | System and method for capturing and converting greenhouse gases |
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| GR01 | Patent grant |