CN205105430U - Emergent terminal of intelligence fire control constant -current source circuit - Google Patents
Emergent terminal of intelligence fire control constant -current source circuit Download PDFInfo
- Publication number
- CN205105430U CN205105430U CN201520840071.2U CN201520840071U CN205105430U CN 205105430 U CN205105430 U CN 205105430U CN 201520840071 U CN201520840071 U CN 201520840071U CN 205105430 U CN205105430 U CN 205105430U
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- China
- Prior art keywords
- triode
- resistance
- electric capacity
- current source
- source circuit
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to an emergent terminal of intelligence fire control constant -current source circuit, its characterized in that: including triode, resistance, electric capacity, the base connecting resistance R33 of triode, the collecting electrode passes through socket XS2 and connects the LED lamp, and projecting pole connecting resistance R36 is connected electric capacity C21 between the base of triode and resistance R33, connecting resistance R39, electric capacity C18 and diode V21 in proper order between the collecting electrode of triode and socket XS2. The utility model discloses a constant current source and fault detection's control is realized to minimum discrete device, can guarantee that the long -time luminosity that uses of LED is unchangeable. And possible debugging is simple, and is reliable, with low costs.
Description
Technical field
The utility model belongs to intelligent emergent lighting field, relates to intelligent emergent terminal, especially a kind of intelligent fire emergency terminal constant-current source circuit.
Background technology
The mode controlled for LED has current constant control and constant pressure control system, in use the luminosity of LED can decline, therefore adopt traditional constant pressure control system cannot meet the brightness of long LED, adopt crossing current control mode can ensure that the luminosity of the long-time use of LED is constant.Traditional constant-current source circuit adopts special chip controls, Cheng Bugao, and it is complicated to play debugging.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of intelligent fire emergency terminal constant-current source circuit that the luminosity of the long-time use of LED is constant that can ensure.
The technical scheme that the utility model technical solution problem adopts is:
A kind of intelligent fire emergency terminal constant-current source circuit, it is characterized in that: comprise triode, resistance, electric capacity, the base stage contact resistance R33 of triode, collector electrode connects LED by socket XS2, emitter contact resistance R36, electric capacity C21 is connected with between resistance R33, contact resistance R39, electric capacity C18 and diode V21 successively between the collector electrode and socket XS2 of triode in the base stage of triode.
And, described resistance R39, electric capacity C18, resistance R36, the equal ground connection of electric capacity C21.
Advantage of the present utility model and good effect are:
The utility model adopts minimum discrete device to realize the control of constant-current source and fault detect, can ensure that the luminosity that LED uses for a long time is constant.And can accomplish that debugging is simple, reliably, cost is low.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection range of the present utility model with this.
A kind of intelligent fire emergency terminal constant-current source circuit, comprise triode, resistance, electric capacity, the base stage contact resistance R33 of triode, collector electrode connects LED by socket XS2, emitter connects the resistance R36 of 480 Ω, electric capacity C21 is connected with between resistance R33, contact resistance R39, electric capacity C18 and diode V21 successively between the collector electrode and socket XS2 of triode, described resistance R39, electric capacity C18, resistance R36, the equal ground connection of electric capacity C21 in the base stage of triode.
The control that lamp is lighted is realized by Single-chip Controlling triode.Due to RC3 control after triode is opened is 5VDC, so be the voltage constant at R36 two ends, so define constant-current source circuit.
In Fig. 1, when lamp source connects time, lamp source and R39 form dividing potential drop, due to power supply 24V, are pressed between 7 ~ 12V so divide, so diode V21 closes, detect high level.After the fault of lamp source, the voltage of R39 is 0V, so be low level by RA1 after diode, realizes the detection for fault.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from utility model design; can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (2)
1. an intelligent fire emergency terminal constant-current source circuit, it is characterized in that: comprise triode, resistance, electric capacity, the base stage contact resistance R33 of triode, collector electrode connects LED by socket XS2, emitter contact resistance R36, electric capacity C21 is connected with between resistance R33, contact resistance R39, electric capacity C18 and diode V21 successively between the collector electrode and socket XS2 of triode in the base stage of triode.
2. intelligent fire emergency terminal constant-current source circuit according to claim 1, is characterized in that: described resistance R39, electric capacity C18, resistance R36, the equal ground connection of electric capacity C21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840071.2U CN205105430U (en) | 2015-10-27 | 2015-10-27 | Emergent terminal of intelligence fire control constant -current source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840071.2U CN205105430U (en) | 2015-10-27 | 2015-10-27 | Emergent terminal of intelligence fire control constant -current source circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205105430U true CN205105430U (en) | 2016-03-23 |
Family
ID=55521177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520840071.2U Active CN205105430U (en) | 2015-10-27 | 2015-10-27 | Emergent terminal of intelligence fire control constant -current source circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205105430U (en) |
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2015
- 2015-10-27 CN CN201520840071.2U patent/CN205105430U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |