CN203934071U - A kind of transmitting illuminant control circuit - Google Patents
A kind of transmitting illuminant control circuit Download PDFInfo
- Publication number
- CN203934071U CN203934071U CN201420334892.4U CN201420334892U CN203934071U CN 203934071 U CN203934071 U CN 203934071U CN 201420334892 U CN201420334892 U CN 201420334892U CN 203934071 U CN203934071 U CN 203934071U
- Authority
- CN
- China
- Prior art keywords
- triode
- resistance
- led
- amplifier
- emitter
- 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.)
- Withdrawn - After Issue
Links
Classifications
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Led Devices (AREA)
Abstract
The utility model discloses a kind of transmitting illuminant control circuit, comprise light-emitting diode, triode and amplifier, described light-emitting diode comprises two LED _ 1 in parallel and LED _ 2, and LED _ 1 and LED _ 2 are connected with respectively triode Q6 and triode Q7; The other end of described resistance R 36 is connected with the collector electrode of triode Q2, in working control signal triode input circuit, the collector electrode of the negative pole of LED _ 1 and the equal connecting triode Q3 of the negative pole of LED _ 2, triode Q3 connecting triode Q4 and amplifier U3A and amplifier U3B, digital-to-analogue conversion control signal D/A is by resistance R 17 input circuits.Compared with prior art, the beneficial effects of the utility model are: the regular variation of circuit voltage, can eliminate in real time the impact of temperature drift, and eliminate experimental error, thereby guarantee the accuracy of data.
Description
Technical field
The utility model relates to a kind of control circuit, specifically a kind of transmitting illuminant control circuit of light-emitting diode.
Background technology
In Experiments of Optics are measured, utilize the experimental result of the photo measure that diode sends, the dichromatic LED adopting due to light source has temperature drift characteristic, and the variation of system temperature will cause the variation of light intensity, thereby affects test result.Meanwhile, the difference of different dichromatic LED self-characteristics causes the data of each group to have larger gap, therefore will design a kind of control circuit and control the error that the luminous intensity of dichromatic LED is brought to eliminate temperature drift.
Utility model content
The purpose of this utility model is to provide a kind of transmitting illuminant control circuit of eliminating temperature drift, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of transmitting illuminant control circuit, comprise light-emitting diode, triode and amplifier, described light-emitting diode comprises two LED _ 1 in parallel and LED _ 2, the collector electrode of the anodal connecting triode Q6 of LED _ 1, the base stage of triode Q6 is connected with respectively resistance R 36 and resistance R 40, the other end of resistance R 40 and triode Q6 emitter be jointly connected in the capacitor C 10 of ground connection, the collector electrode of the anodal connecting triode Q7 of described LED _ 2, the base stage of triode Q7 is connected with respectively resistance R 39 and resistance R 41, the other end of resistance R 41 and triode Q7 emitter be jointly connected on ground capacity C24, the emitter of described LED _ 1 and the emitter of LED _ 2 are connected in inductance L 7 jointly, the other end of described resistance R 36 is connected with the collector electrode of triode Q2, and the base stage of triode Q2 is by resistance R 33 input service control signal S1, the grounded emitter of triode Q2, the other end of described resistance R 39 is connected with the collector electrode of triode Q5, and the base stage of triode Q5 is by resistance R 34 input service control signal S2, the grounded emitter of triode Q5, the collector electrode of the negative pole of described LED _ 1 and the equal connecting triode Q3 of the negative pole of LED _ 2, the base stage of triode Q3 connects the output of amplifier U3B by resistance R 37, the collector electrode of the emitter connecting triode Q4 of triode Q3, the base stage of triode Q4 is by resistance R 38 input service control signal PWM, the emitter of triode Q4 connects respectively the inverting input of amplifier U3B and the resistance R of ground connection 43, the in-phase input end of amplifier U3B is connected with respectively resistance R 46, the capacitor C 32 of ground connection and the resistance R 7 of ground connection, the other end of resistance R 46 connects the output of amplifier U3A, the in-phase input end of amplifier U3A is by resistance R 17 input digital-to-analogue conversion control signal D/A, and the in-phase input end of amplifier U3A also connects the capacitor C 36 of ground connection, the inverting input of amplifier U3A is connected with output.
As further program of the utility model: one end of described inductance L 7 and amplifier U3A is connected power supply AV5.
Compared with prior art, the beneficial effects of the utility model are: the regular variation of circuit voltage, and can eliminate in real time the impact of temperature drift, thereby guarantee the accuracy of data.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of transmitting illuminant control circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of transmitting illuminant control circuit, comprise light-emitting diode, triode and amplifier, light-emitting diode comprises two LED _ 1 in parallel and LED _ 2, the collector electrode of the anodal connecting triode Q6 of LED _ 1, the base stage of triode Q6 is connected with respectively resistance R 36 and resistance R 40, the other end of resistance R 40 and triode Q6 emitter be jointly connected in the capacitor C 10 of ground connection; The collector electrode of the anodal connecting triode Q7 of LED _ 2, the base stage of triode Q7 is connected with respectively resistance R 39 and resistance R 41, the other end of resistance R 41 and triode Q7 emitter be jointly connected on ground capacity C24; The emitter of LED _ 1 and the emitter of LED _ 2 are connected in inductance L 7 jointly.
The other end of resistance R 36 is connected with the collector electrode of triode Q2, and the base stage of triode Q2 is by resistance R 33 input service control signal S1, the grounded emitter of triode Q2; The other end of resistance R 39 is connected with the collector electrode of triode Q5, and the base stage of triode Q5 is by resistance R 34 input service control signal S2, the grounded emitter of triode Q5.
The collector electrode of the negative pole of LED _ 1 and the equal connecting triode Q3 of the negative pole of LED _ 2, the base stage of triode Q3 connects the output of amplifier U3B by resistance R 37, the collector electrode of the emitter connecting triode Q4 of triode Q3, the base stage of triode Q4 is by resistance R 38 input service control signal PWM, the emitter of triode Q4 connects respectively the inverting input of amplifier U3B and the resistance R of ground connection 43, the in-phase input end of amplifier U3B is connected with respectively resistance R 46, the capacitor C 32 of ground connection and the resistance R 7 of ground connection, the other end of resistance R 46 connects the output of amplifier U3A, the in-phase input end of amplifier U3A is by resistance R 17 input digital-to-analogue conversion control signal D/A, and the in-phase input end of amplifier U3A also connects the capacitor C 36 of ground connection, the inverting input of amplifier U3A is connected with output, one end of inductance L 7 and amplifier U3A is connected power supply AV5.
Operation principle of the present utility model is:
When PWM=1 and S1=1, LED _ 1 brightens; When PWM=1 and S2=1, LED _ 2 brighten; Digital-to-analogue conversion control signal D/A is used for adjusting Q3 base voltage, makes it be operated in amplification region, by changing the magnitude of voltage of D/A mouth output, the electric current of Q3 is changed, thereby changes the luminous intensity of LED_1 and LED_2, the error of bringing to eliminate variations in temperature; When variations in temperature causes light-intensity variation in addition, the sampled voltage of Q4 output also will be servo-actuated by rule, thereby feed back to Q3 base voltage by amplifier U3B and amplifier U3A, eliminate in real time the impact that temperature is floated.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present utility model or essential characteristic, can realize the utility model with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, is therefore intended to include in the utility model dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. a transmitting illuminant control circuit, comprise light-emitting diode, triode and amplifier, it is characterized in that, described light-emitting diode comprises two LED _ 1 in parallel and LED _ 2, the collector electrode of the anodal connecting triode Q6 of LED _ 1, the base stage of triode Q6 is connected with respectively resistance R 36 and resistance R 40, the other end of resistance R 40 and triode Q6 emitter be jointly connected in the capacitor C 10 of ground connection, the collector electrode of the anodal connecting triode Q7 of described LED _ 2, the base stage of triode Q7 is connected with respectively resistance R 39 and resistance R 41, the other end of resistance R 41 and triode Q7 emitter be jointly connected on ground capacity C24, the emitter of described LED _ 1 and the emitter of LED _ 2 are connected in inductance L 7 jointly, the other end of described resistance R 36 is connected with the collector electrode of triode Q2, and the base stage of triode Q2 is by resistance R 33 input service control signal S1, the grounded emitter of triode Q2, the other end of described resistance R 39 is connected with the collector electrode of triode Q5, and the base stage of triode Q5 is by resistance R 34 input service control signal S2, the grounded emitter of triode Q5, the collector electrode of the negative pole of described LED _ 1 and the equal connecting triode Q3 of the negative pole of LED _ 2, the base stage of triode Q3 connects the output of amplifier U3B by resistance R 37, the collector electrode of the emitter connecting triode Q4 of triode Q3, the base stage of triode Q4 is by resistance R 38 input service control signal PWM, the emitter of triode Q4 connects respectively the inverting input of amplifier U3B and the resistance R of ground connection 43, the in-phase input end of amplifier U3B is connected with respectively resistance R 46, the capacitor C 32 of ground connection and the resistance R 7 of ground connection, the other end of resistance R 46 connects the output of amplifier U3A, the in-phase input end of amplifier U3A is by resistance R 17 input digital-to-analogue conversion control signal D/A, and the in-phase input end of amplifier U3A also connects the capacitor C 36 of ground connection, the inverting input of amplifier U3A is connected with output.
2. transmitting illuminant control circuit according to claim 1, is characterized in that, one end of described inductance L 7 and amplifier U3A is connected power supply AV5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334892.4U CN203934071U (en) | 2014-06-23 | 2014-06-23 | A kind of transmitting illuminant control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334892.4U CN203934071U (en) | 2014-06-23 | 2014-06-23 | A kind of transmitting illuminant control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203934071U true CN203934071U (en) | 2014-11-05 |
Family
ID=51829816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420334892.4U Withdrawn - After Issue CN203934071U (en) | 2014-06-23 | 2014-06-23 | A kind of transmitting illuminant control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203934071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023453A (en) * | 2014-06-23 | 2014-09-03 | 苏州塔可盛电子科技有限公司 | Emission light source control circuit |
-
2014
- 2014-06-23 CN CN201420334892.4U patent/CN203934071U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023453A (en) * | 2014-06-23 | 2014-09-03 | 苏州塔可盛电子科技有限公司 | Emission light source control circuit |
| CN104023453B (en) * | 2014-06-23 | 2016-09-14 | 银川博聚工业产品设计有限公司 | A kind of transmitting control circuit for light source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203934071U (en) | A kind of transmitting illuminant control circuit | |
| CN202261234U (en) | Constant-current and constant-power burn-in circuit for photoelectric coupler | |
| CN203836622U (en) | Portable table lamp | |
| CN104916492A (en) | Relay control circuit | |
| CN102830746A (en) | Segmented linear heat foldback current generation circuit | |
| CN104023453A (en) | Emission light source control circuit | |
| CN204205567U (en) | A kind of circuit for remotely controlling of Switching Power Supply | |
| CN204652334U (en) | A kind of drive circuit based on IGBT | |
| CN204206574U (en) | A kind of LED power limitation control power supply | |
| CN201700053U (en) | Control circuit and protection circuit of LED current source | |
| CN204425301U (en) | A kind of drive circuit of servo-driver | |
| CN105554940A (en) | Adaptive adjustment circuit for automotive load current | |
| CN204836134U (en) | Isolated driving circuit | |
| CN204697040U (en) | A kind of Width funtion groove type photoelectric switch | |
| CN204668912U (en) | A kind of protective circuit | |
| CN202334485U (en) | Novel starting signal generator | |
| CN203982252U (en) | A kind of new power limiting circuit | |
| CN202449482U (en) | Control circuit for electronic induction garbage bin | |
| CN204595664U (en) | A kind of high-precision low cost current-source arrangement | |
| CN204314362U (en) | A kind of linear voltage sample circuit | |
| CN103595377A (en) | Control circuit of switch of audion | |
| CN104470036A (en) | Automatic brightness control circuit of LED lamp | |
| CN202795122U (en) | Piecewise linear circuit for generating thermal foldback current | |
| CN202334484U (en) | Starting signal generating circuit | |
| CN202085368U (en) | Non-stroboscopic LED driving power supply applicable to silicon controlled dimmer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141105 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |