CN206365081U - A kind of resistance self-regulation circuit - Google Patents
A kind of resistance self-regulation circuit Download PDFInfo
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- CN206365081U CN206365081U CN201621392292.9U CN201621392292U CN206365081U CN 206365081 U CN206365081 U CN 206365081U CN 201621392292 U CN201621392292 U CN 201621392292U CN 206365081 U CN206365081 U CN 206365081U
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- lamp group
- threshold value
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Abstract
The utility model discloses a kind of resistance self-regulation circuit, aim to provide a kind of resistance self-regulation circuit adjusted for LED light, its drip irrigation device is the dc source, current-limiting resistance, lamp group for including being sequentially connected, start-up circuit, is connected to the electric current for being used on or off lamp group on the current loop of lamp group；The switch contact of multiple shunt resistances and control correspondence shunt resistance access is also parallel with the lamp group, the switch contact connects temperature control circuit；The temperature control circuit switches over the number of the access of shunt resistance according to lamp group regional temperature, has reached the effect of Intelligent adjustment.
Description
Technical field
The utility model is related to light regulation technology field, more particularly to resistance self-regulation circuit.
Background technology
Mainly there are incandescent lamp, fluorescent tube, LED etc., light emitting diode for existing luminescent device
(LightEmittingDiode, LED) invention is in the 1960s, it is to utilize the electronics and hole phase in semi-conducting material
Mutually combine and give off energy so that energy band (EnergyGat) position rank changes, the energy that it is discharged with luminescence display.
LED has the advantages that small volume, long lifespan, driving voltage are low, power consumption is low, reaction rate is fast, vibration strength is good, is widely used
In fields such as signal designation, digital-scroll techniques.With the continuous progress of technology, the development of ultra-bright LED has obtained success, especially
White light LEDs are succeeded in developing so that it is increasingly being used in lighting field.Existing incandescent lamp, fluorescent tube are used
Alternating current, and LED is powered by direct current, in the regulation to its lamplight brightness mainly by resistor or
Potentiometer is adjusted, and this mode adjusts needs and set manually, not intelligent enough.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide the resistance adjusted for LED light
Be self-regulated circuit.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of resistance self-regulated economize on electricity
Road, including be sequentially connected dc source, current-limiting resistance, lamp group, in addition to
Start-up circuit, is connected to the electric current for being used on or off lamp group on the current loop of lamp group；
The switch contact of multiple shunt resistances and control correspondence shunt resistance access is also parallel with the lamp group, it is described
Switch contact connects temperature control circuit；
The temperature control circuit switches over the number of the access of shunt resistance according to lamp group regional temperature.
By above-mentioned setting, when the current supply circuit of start-up circuit turn-on lamp group, now lamp group carries out luminous lighting, so
If environment temperature is raised afterwards, now the electric current in lamp group keeps constant, is unfavorable for the service life of lamp bead, it is necessary to will
The reduction of electric current suitably is just advantageously in the life-span of LED lamp bead, and this programme is by temperature control circuit in parallel in lamp group
The circuit of shunt resistance is controlled, so that when temperature is raised, shunt resistance is accessed, so that by the current reduction in lamp group,
To carry out the light modulation of intelligence, light luminance is reduced.
Can be preferably as concrete scheme of the present utility model：The start-up circuit includes start button, the four or three pole
Pipe, startup power supply；Start button is to connect startup power supply to the base stage of the 4th triode, to turn on the 4th in actuation of keys
Triode.
By above-mentioned setting, the 4th triode is controlled using start button, so as to effective turn-on current stream
To the path of earth terminal, start button is easy to manually control.
Can be preferably as concrete scheme of the present utility model：The temperature control circuit includes temperature sensor, the first ratio
Compared with module, the second comparison module, the 3rd comparison module；
Temperature sensor according to environment temperature generate analog signal and input to the first comparison module, the second comparison module,
3rd comparison module；
First comparison module is configured with first and compares threshold value, and the second comparison module is configured with second and compares threshold value, the 3rd ratio
The 3rd, which is configured with, compared with module compares threshold value, wherein, first, which compares threshold value ＞ second, compares threshold value ＞ the 3rd and compares threshold value.
By above-mentioned setting, temperature detection is carried out using temperature sensor, is then compared using the first comparison module, second
Module, the 3rd comparison module, classify to environment temperature, temperature in first compare threshold value and second compare threshold value it
Between when, access 1 shunt resistance；Temperature in second compare threshold value and the 3rd compare threshold value when, access 2 shunting
Resistance；When temperature compares threshold value higher than the 3rd, 3 shunt resistances are accessed.
Can be preferably as concrete scheme of the present utility model：Switch contact includes the first normally opened contact, second normally opened
Contact, the 3rd normally opened contact, are connected with drive circuit, the drive circuit is according to temperature control electricity between temperature control circuit and switch contact
The output result on road is driven corresponding switch contact.
By above-mentioned setting, switch contact is controlled by drive circuit, so as to significant response temperature control circuit
Output signal.
Can be preferably as concrete scheme of the present utility model：The drive circuit include the first triode and first after
Electrical equipment, the colelctor electrode of first triode connects the coil of the first relay, and the base stage connection first of the first triode is compared
Module output end, grounded emitter, the other end connection power supply of the coil of the first relay.
By above-mentioned setting, when the first relay obtains electric, then corresponding is the first normally opened contact closure.
Can be preferably as concrete scheme of the present utility model：The resistance of the shunt resistance is identical.
By above-mentioned setting, the resistance of shunt resistance is identical, beneficial to the homogenization of shunting.
In summary, the utility model has the advantages that：Manual switch is carried out to lamp group using start-up circuit
Control, after lamp group is lighted, then by temperature control circuit is controlled its electric current, the control of electric current mainly employs the original of shunt resistance
Reason, makes its resistance change, so as to realize the regulation of light.
Brief description of the drawings
Fig. 1 connects circuit diagram for the lamp group of the present embodiment；
Fig. 2 is the drive circuit figure of the present embodiment；
Fig. 3 is the temperature control circuit figure of the present embodiment.
In figure：100th, dc source；R11, current-limiting resistance；200th, lamp group；300th, shunt resistance；Q4, the 4th triode；
400th, switch contact；K1-1, the first normally opened contact；K2-1, the second normally opened contact；K3-1, the 3rd normally opened contact；500th, electricity is driven
Road；501st, the first drive division；502nd, the second drive division；503rd, the 3rd drive division；Q1, the first triode；K1, the first relay；
600th, temperature control circuit；601st, temperature sensor；602nd, the first comparison module；603rd, the second comparison module；604th, the 3rd compares mould
Block；700th, start-up circuit；SB, start button；701st, startup power supply.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment：As shown in figure 1, a kind of resistance self-regulation circuit, including dc source 100, the current limliting electricity being sequentially connected
Hinder R11, lamp group 200, start-up circuit 700.Dc source 100 is prior art, can use battery or other supply units
There is provided.Start-up circuit 700 is connected to the electric current for being used on or off lamp group 200 on the current loop of lamp group 200.Start-up circuit
700 include start button SB, the 4th triode Q4, startup power supply 701.Startup power supply 701 can use battery or button cell.
Base stages of the start button SB to connect the triode Q4 of startup power supply 701 to the 4th, to turn on the four or three pole in actuation of keys
Pipe Q4.4th triode Q4 grounded emitter, one end of colelctor electrode connection lamp group 200.Lamp group 200 is by multiple LED bead strings
Connection is formed.Current-limiting resistance R11 is used as the limitation electric current of flowing through lamps group 200.
The switch contact that multiple shunt resistances 300 and control correspondence shunt resistance 300 are accessed also is parallel with lamp group 200
400, switch contact 400 includes the first normally opened contact K1-1, the second normally opened contact K2-1, the 3rd normally opened contact K3-1.
The figure of drive circuit 500 as shown in Figure 2, drive circuit 500 includes the first drive division 501, the second drive division 502, the
Three drive divisions 503.First drive division 501, the second drive division 502, the three's circuit structure of the 3rd drive division 503 are identical, and first drives
Dynamic portion 501 includes the first triode Q1 and the first relay K1.First triode Q1 colelctor electrode connects the first relay K1's
Coil, the first triode Q1 base stage connection output end of the first comparison module 602, grounded emitter, the first relay K1 line
The other end connection power supply of circle.And diode D1 is connected in reverse parallel on the first relay K1.When the first relay K1 obtains electric
When, then corresponding is the first normally opened contact K1-1 closures.The signal of input is S1, S2, S3, respectively by temperature control circuit 600
There is provided, drive circuit 500 is driven corresponding switch contact 400 according to the output result of temperature control circuit 600.
As shown in figure 3, temperature control circuit 600 includes temperature sensor 601, the first comparison module 602, the second comparison module
603rd, the 3rd comparison module 604.First comparison module 602 includes comparator LM1, potentiometer VR1.Second comparison module 603 is wrapped
Include comparator LM2, potentiometer VR2.3rd comparison module 604 includes comparator LM3, potentiometer VR3.Potentiometer VR1, potentiometer
VR2, potentiometer VR3 connect, the reverse input end of its respective output end connection correspondence comparator.Temperature sensor 601 is connected
The in-phase input end of respective comparator.Temperature sensor 601 generates analog signal and inputted to first according to environment temperature to be compared
Module 602, the second comparison module 603, the 3rd comparison module 604；First comparison module 602 is configured with first and compares threshold value, the
Two comparison modules 603 are configured with second and compare threshold value, and the 3rd comparison module 604 is configured with the 3rd and compares threshold value, wherein, the first ratio
Compare threshold value ＞ the 3rd compared with threshold value ＞ second and compare threshold value.
The course of work：When the current supply circuit of the turn-on lamp group 200 of start-up circuit 700, now lamp group 200 carries out luminous shine
Bright, if then environment temperature is raised, now the electric current in lamp group 200 keeps constant, is unfavorable for the use longevity of lamp bead
Life is, it is necessary to which by the reduction of electric current suitably just advantageously in the life-span of LED lamp bead, this programme is exactly to pass through 600 pairs of temperature control circuit
The circuit of shunt resistance 300 in parallel is controlled in lamp group 200, so that when temperature is raised, shunt resistance 300 is accessed, from
And by the current reduction in lamp group 200, to carry out intelligent light modulation, light luminance is reduced.Temperature control circuit 600 is according to lamp group
200 regional temperatures switch over the number of the access of shunt resistance 300.
Temperature detection is carried out using temperature sensor 601, the first comparison module 602, the second comparison module is then utilized
603rd, the 3rd comparison module 604, is classified to environment temperature, and with the continuous rise of temperature, the first ratio is in temperature
When comparison compared with threshold value and second between threshold value, 1 shunt resistance 300 is accessed；Temperature compares threshold value and the 3rd in second
When comparing threshold value, 2 shunt resistances 300 are accessed；When temperature compares threshold value higher than the 3rd, 3 shunt resistances are accessed
300。
In addition, the resistance of shunt resistance 300 can be with identical.The resistance for acting as shunt resistance 300 played is identical, is beneficial to
The homogenization of shunting.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected in right of the present utility model by Patent Law.
Claims (6)
- The circuit 1. a kind of resistance is self-regulated, including be sequentially connected dc source (100), current-limiting resistance (R11), lamp group (200), It is characterized in that：Also includeStart-up circuit (700), is connected to the electric current for being used on or off lamp group (200) on the current loop of lamp group (200)；Multiple shunt resistances (300) are also parallel with the lamp group (200) and opening for correspondence shunt resistance (300) access is controlled Close contact (400), switch contact (400) the connection temperature control circuit (600)；The temperature control circuit (600) switches over the number of the access of shunt resistance (300) according to lamp group (200) regional temperature.
- The circuit 2. resistance according to claim 1 is self-regulated, it is characterised in that：The start-up circuit (700) includes starting Button (SB), the 4th triode (Q4), startup power supply (701)；Start button (SB) is to connect startup power supply (701) to the 4th The base stage of triode (Q4), to turn on the 4th triode (Q4) in actuation of keys.
- The circuit 3. resistance according to claim 1 is self-regulated, it is characterised in that：The temperature control circuit (600) includes temperature Sensor (601), the first comparison module (602), the second comparison module (603), the 3rd comparison module (604)；Temperature sensor (601) generates analog signal and inputted to the first comparison module (602), second according to environment temperature to be compared Module (603), the 3rd comparison module (604)；First comparison module (602) is configured with first and compares threshold value, and the second comparison module (603) is configured with second and compares threshold value, 3rd comparison module (604) is configured with the 3rd and compares threshold value, wherein, first, which compares threshold value ＞ second, compares threshold value ＞ the 3rd and compares Threshold value.
- The circuit 4. resistance according to claim 3 is self-regulated, it is characterised in that：It is normally opened that switch contact (400) includes first Contact (K1-1), the second normally opened contact (K2-1), the 3rd normally opened contact (K3-1), temperature control circuit (600) and switch contact (400) Between be connected with drive circuit (500), the drive circuit (500) is driven according to the output result of temperature control circuit (600) Corresponding switch contact (400).
- The circuit 5. resistance according to claim 4 is self-regulated, it is characterised in that：The drive circuit (500) includes first Triode (Q1) and the first relay (K1), the colelctor electrode of first triode (Q1) connect the line of the first relay (K1) Circle, base stage connection the first comparison module (602) output end of the first triode (Q1), grounded emitter, the first relay (K1) Coil the other end connection power supply.
- The circuit 6. resistance according to claim 1 is self-regulated, it is characterised in that：The resistance phase of the shunt resistance (300) Together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621392292.9U CN206365081U (en) | 2016-12-17 | 2016-12-17 | A kind of resistance self-regulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621392292.9U CN206365081U (en) | 2016-12-17 | 2016-12-17 | A kind of resistance self-regulation circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206365081U true CN206365081U (en) | 2017-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621392292.9U Active CN206365081U (en) | 2016-12-17 | 2016-12-17 | A kind of resistance self-regulation circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275895A (en) * | 2017-06-13 | 2017-10-20 | 安顺云首创科技开发有限公司 | A kind of automatic switchover resistor connector |
| CN110098811A (en) * | 2019-04-11 | 2019-08-06 | 深圳市华星光电技术有限公司 | A kind of operational amplifier and display device |
-
2016
- 2016-12-17 CN CN201621392292.9U patent/CN206365081U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275895A (en) * | 2017-06-13 | 2017-10-20 | 安顺云首创科技开发有限公司 | A kind of automatic switchover resistor connector |
| CN110098811A (en) * | 2019-04-11 | 2019-08-06 | 深圳市华星光电技术有限公司 | A kind of operational amplifier and display device |
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