CN206506740U - A kind of Voltage stabilizing module drive circuit - Google Patents
A kind of Voltage stabilizing module drive circuit Download PDFInfo
- Publication number
- CN206506740U CN206506740U CN201621478842.9U CN201621478842U CN206506740U CN 206506740 U CN206506740 U CN 206506740U CN 201621478842 U CN201621478842 U CN 201621478842U CN 206506740 U CN206506740 U CN 206506740U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- voltage stabilizing
- diode
- drive circuit
- 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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Classifications
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses a kind of Voltage stabilizing module drive circuit, including resistance R1, diode D1, triode Q3, triode Q5 and triode Q8, described resistance R7 one end connects power supply VCC respectively, triode Q8 colelctor electrodes and triode Q7 colelctor electrodes, the resistance R7 other ends connect diode D1 negative poles, diode D1 positive poles connect resistance R9 and triode Q5 emitter stages respectively, triode Q5 base stages distinguish connecting triode Q5 colelctor electrodes, resistance R8 and resistance R2, resistance R8 other end connecting triode Q4 base stages, triode Q4 colelctor electrodes connect resistance R1 and triode Q3 base stages respectively.The utility model Voltage stabilizing module drive circuit overcurrent protection and overvoltage protection be combined method can effectively by the power consumption limit of circuit within the specific limits; to ensure that adjustment pipe is operated in the range of safety condition; significant response can be made in time in the case of circuit operation irregularity simultaneously, protection circuit is not damaged by.
Description
Technical field
The utility model is related to a kind of drive circuit, specifically a kind of Voltage stabilizing module drive circuit.
Background technology
In recent years, semiconductor light source just steps into lighting field with the role of novel solid light source.By solid luminescence thing
Principle of science, luminous efficiency can be close to 100%, with operating voltage is low, power consumption is small, the response time is short, luminous efficiency is high, anti-
Impact, service life length, photochromic pure, stable and reliable for performance and low cost and other advantages.With the continuous reduction of LED prices, light
The continuous improvement of brightness, semiconductor light source presents the prospect of being widely applied in lighting field.LED C-V characteristic with it is common
The C-V characteristic of diode is identical, and the relatively minor swing of forward voltage may result in the drastically change of forward current.LED forward currents
Size can change with variation of ambient temperature, environment reaches certain temperature, and LED allows forward current to drastically reduce；Herein
In the case of, if still by high current, easily cause LED agings, reduction of service life, therefore LED needs in application process
Want a drive circuit with reliably protecting function.
Utility model content
The purpose of this utility model is to provide a kind of Voltage stabilizing module drive circuit, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the utility model provides following technical scheme：
A kind of Voltage stabilizing module drive circuit, including resistance R1, diode D1, triode Q3, LED, three poles
Pipe Q5 and triode Q8, described resistance R7 one end connects power supply VCC, triode Q8 colelctor electrodes and triode Q7 colelctor electrodes respectively,
The resistance R7 other ends connect diode D1 negative poles, and diode D1 positive poles connect resistance R9 and triode Q5 emitter stages, three poles respectively
Pipe Q5 base stages difference connecting triode Q5 colelctor electrodes, resistance R8 and resistance R2, resistance R8 other end connecting triode Q4 base stages, three
Pole pipe Q4 colelctor electrodes connect resistance R1 and triode Q3 base stages respectively, resistance R1 other ends difference connecting triode Q3 colelctor electrodes,
The resistance R2 other ends, resistance R3 and resistance R4, resistance R3 other end connecting triode Q7 base stages, triode Q7 emitter stages connect respectively
Connect triode Q8 base stages, resistance R5 and the resistance R4 other ends, resistance R5 other ends difference connecting luminous diode LED positive poles and electricity
R6 is hindered, the resistance R6 other ends connect the resistance R9 other ends and triode Q8 emitter stages, the LED negative pole point respectively
Other connecting triode Q4 emitter stages and triode Q3 emitter stages.
It is used as further program of the utility model：The power supply VCC voltages are 12V.
It is used as further program of the utility model：The diode D1 is voltage-regulator diode.
It is used as further program of the utility model：The voltage stabilizing value of the diode D1 is 5V.
It is used as the utility model further scheme：The triode Q1, triode Q2, triode Q3, triode Q4
NPN triode is used with triode Q5.
Compared with prior art, the beneficial effects of the utility model are：The utility model Voltage stabilizing module drive circuit is mistake
Stream protection and overvoltage protection be combined method can effectively by the power consumption limit of circuit within the specific limits, with ensure adjustment pipe
It is operated in the range of safety condition, while significant response, protection circuit can be made in time in the case of circuit operation irregularity
It is not damaged by.
Brief description of the drawings
Fig. 1 is the circuit diagram of Voltage stabilizing module drive circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe.
Referring to Fig. 1, in the utility model embodiment, a kind of Voltage stabilizing module drive circuit, including resistance R1, diode
D1, triode Q3, LED, triode Q5 and triode Q8, described resistance R7 one end connects power supply VCC, three respectively
Pole pipe Q8 colelctor electrodes and triode Q7 colelctor electrodes, resistance R7 other ends connection diode D1 negative poles, diode D1 positive poles connect respectively
Connecting resistance R9 and triode Q5 emitter stages, triode Q5 base stages difference connecting triode Q5 colelctor electrodes, resistance R8 and resistance R2, electricity
R8 other end connecting triode Q4 base stages are hindered, triode Q4 colelctor electrodes connect resistance R1 and triode Q3 base stages, resistance R1 respectively
Other end difference connecting triode Q3 colelctor electrodes, the resistance R2 other ends, resistance R3 and resistance R4, resistance the R3 other end connect three poles
Pipe Q7 base stages, triode Q7 emitter stages difference connecting triode Q8 base stages, resistance R5 and the resistance R4 other ends, the resistance R5 other ends
Connecting luminous diode LED positive poles and resistance R6, resistance the R6 other end connect the resistance R9 other ends and triode Q8 respectively respectively
Emitter stage, the LED negative pole difference connecting triode Q4 emitter stages and triode Q3 emitter stages；The power supply
VCC voltages are 12V.
Circuit is built according to parameter shown in Fig. 1, load RL can be LED, during circuit normal work, diode D1 cut-offs,
Electric current on Q8 all flows through sampling resistor R6.When load current is less than maximum output current, Q5 normal works, Q5 current collection
Pole tension is insufficient to allow Q4 to turn on, so as to ensure that Q3 and Q4 are in cut-off state, its presence can't influence Q7 and Q8 just
Often work；When load current is more than maximum output current, the pressure drop increase on sampling resistor R6 makes Q5 collector current will
Q4 base potential is raised, and makes the two transistor successive conductives of Q3 and Q4, Q7 base current is shunted, it is ensured that Q7 and Q8 are not
Can be by excessive circuit damage.
When the electric current for being output to load RL is excessive, the circuit plays metering function；When the voltage for being input to load RL two ends
When excessive, the circuit plays pressure limiting.It is this overcurrent protection and overvoltage protection are combined method can be effectively by circuit
Power consumption limit within the specific limits, with ensure Q7 and Q8 composition adjustment pipe be operated in the range of safety condition.Due to crystal
The threshold voltage of pipe conducting is the function of temperature, therefore when excessively stream or overvoltage cause temperature to rise, current-limiting resistance R6 two ends
Pressure drop can be raised and raised with temperature, while the threshold voltage of Q4 conductings can rise and decline with temperature, both collective effects will
Make susceptibility increase of the circuit to temperature change, significant response can be made in time in the case of circuit operation irregularity, protected
Circuit is not damaged by.
Claims (5)
1. a kind of Voltage stabilizing module drive circuit, including resistance R1, diode D1, triode Q3, triode Q5 and triode Q8, its
It is characterised by, described resistance R7 one end connects power supply VCC, triode Q8 colelctor electrodes and triode Q7 colelctor electrodes, resistance R7 respectively
The other end connects diode D1 negative poles, and diode D1 positive poles connect resistance R9 and triode Q5 emitter stages, triode Q5 bases respectively
Pole difference connecting triode Q5 colelctor electrodes, resistance R8 and resistance R2, resistance R8 other end connecting triode Q4 base stages, triode Q4
Colelctor electrode connects resistance R1 and triode Q3 base stages, resistance R1 other ends difference connecting triode Q3 colelctor electrodes, resistance R2 respectively
The other end, resistance R3 and resistance R4, resistance R3 other end connecting triode Q7 base stages, triode Q7 emitter stages connect three poles respectively
Pipe Q8 base stages, resistance R5 and the resistance R4 other ends, the resistance R5 other ends connect load RL and resistance R6, the resistance R6 other ends respectively
The connection resistance R9 other ends and triode Q8 emitter stages respectively, the load RL other ends difference connecting triode Q4 emitter stages and
Triode Q3 emitter stages.
2. Voltage stabilizing module drive circuit according to claim 1, it is characterised in that the power supply VCC voltages are 12V.
3. Voltage stabilizing module drive circuit according to claim 1, it is characterised in that the diode D1 is the pole of voltage stabilizing two
Pipe.
4. Voltage stabilizing module drive circuit according to claim 3, it is characterised in that the voltage stabilizing value of the diode D1 is
5V。
5. Voltage stabilizing module drive circuit according to claim 1, it is characterised in that the triode Q1, triode Q2, three
Pole pipe Q3, triode Q4 and triode Q5 use NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621478842.9U CN206506740U (en) | 2016-12-30 | 2016-12-30 | A kind of Voltage stabilizing module drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621478842.9U CN206506740U (en) | 2016-12-30 | 2016-12-30 | A kind of Voltage stabilizing module drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206506740U true CN206506740U (en) | 2017-09-19 |
Family
ID=59837173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621478842.9U Expired - Fee Related CN206506740U (en) | 2016-12-30 | 2016-12-30 | A kind of Voltage stabilizing module drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206506740U (en) |
-
2016
- 2016-12-30 CN CN201621478842.9U patent/CN206506740U/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 |
Granted publication date: 20170919 Termination date: 20181230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |