CN205377255U - LED safety protection power supply circuit - Google Patents
LED safety protection power supply circuit Download PDFInfo
- Publication number
- CN205377255U CN205377255U CN201620101366.2U CN201620101366U CN205377255U CN 205377255 U CN205377255 U CN 205377255U CN 201620101366 U CN201620101366 U CN 201620101366U CN 205377255 U CN205377255 U CN 205377255U
- Authority
- CN
- China
- Prior art keywords
- resistance
- chip
- pin
- connects
- led
- 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
Links
Landscapes
- Led Devices (AREA)
Abstract
The utility model discloses a LED safety protection power supply circuit, including resistance R1, resistance R2, chip IC1 and LED lamps and lanterns H, resistance R1's one end connecting resistance R2, resistance R5, resistance R7, triode V1's collecting electrode, LED lamps and lanterns H and power VCC, resistance R1's other end connecting resistance R3 and chip IC1's pin 1, resistance R2's other end connecting resistance R4 and chip IC1's pin 3, resistance R3's the other end and resistance R4's the equal ground connection of the other end. The utility model discloses LED safety protection power supply circuit simple structure, components and parts are few, and the style of work through divider resistance, the adjustable reference source of three -terminal and comparator has realized under -voltage, overvoltage protection, and has set up the optical coupling isolation component in the circuit, increase the stability of circuit, consequently have various, the anti -interference and convenient to use's of function advantage.
Description
Technical field
This utility model relates to a kind of power circuit, specifically a kind of LED safeguard protection power circuit.
Background technology
Along with the negative effect caused by Global Greenhouse Effect constantly manifests, in the world every country all using energy-saving and emission-reduction as the major issue that must take in native economic development, the emerging power-saving technology that LED illumination technology is arisen at the historic moment just under this background.Current LED illumination product has had been applied in daily life, along with developing rapidly of LED.The conventional light source that present white LED light source is compared has life-span length, solid state lighting is hardly damaged, specular removal, without advantages such as hydrargyrum environmental protection, antidetonations, following will become third generation light source, another revolution of lighting field will be brought.The power circuit of LED directly determines functional performance and the service life of LED, and the existing most structure of LED power circuit is complicated, interference free performance is poor, therefore needs to be improved.
Utility model content
The purpose of this utility model is in that to provide a kind of LED safeguard protection power circuit, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
nullA kind of LED safeguard protection power circuit，Including resistance R1、Resistance R2、Chip IC 1 and LED lamp H，One end of described resistance R1 connects resistance R2、Resistance R5、Resistance R7、The colelctor electrode of audion V1、LED lamp H and power supply VCC，The other end of resistance R1 connects the pin 1 of resistance R3 and chip IC 1，The other end of resistance R2 connects the pin 3 of resistance R4 and chip IC 1，The other end of resistance R3 and the equal ground connection of the other end of resistance R4，The other end of resistance R5 connects resistance R6、The negative electrode of three end adjustable reference source P and the control pole of three end adjustable reference source P，The other end of resistance R6 connects the pin 1 of chip IC 1 and the pin 3 of chip IC 2，The pin 4 of chip IC 1 connects the anode of diode D1，The negative electrode of diode D1 connects resistance R7、The negative electrode of diode D2 and the base stage of audion V1，The emitter stage of audion V1 connects resistance R8，The other end of resistance R8 connects the pin 1 of chip IC 3，Pin 2 ground connection of chip IC 3，The pin 3 of chip IC 3 connects the other end of LED lamp H，The pin 4 of chip IC 3 connects resistance R9，The other end ground connection of resistance R9，The model of described chip IC 1 and chip IC 2 is LM321，Chip IC 3 is 4N25 photo-coupler.
As preferred version of the present utility model: described diode D1 and diode D2 is light emitting diode.
Compared with prior art; the beneficial effects of the utility model are: this utility model LED safeguard protection circuit construction of electric power is simple, components and parts are few; the style of work by divider resistance, three end adjustable reference sources and comparator; achieve under-voltage, overvoltage protection; and circuit is provided with light-coupled isolation element; increase the stability of circuit, therefore there is diverse in function, advantage anti-interference and easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of LED safeguard protection power circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，A kind of LED safeguard protection power circuit，Including resistance R1、Resistance R2、Chip IC 1 and LED lamp H，One end of described resistance R1 connects resistance R2、Resistance R5、Resistance R7、The colelctor electrode of audion V1、LED lamp H and power supply VCC，The other end of resistance R1 connects the pin 1 of resistance R3 and chip IC 1，The other end of resistance R2 connects the pin 3 of resistance R4 and chip IC 1，The other end of resistance R3 and the equal ground connection of the other end of resistance R4，The other end of resistance R5 connects resistance R6、The negative electrode of three end adjustable reference source P and the control pole of three end adjustable reference source P，The other end of resistance R6 connects the pin 1 of chip IC 1 and the pin 3 of chip IC 2，The pin 4 of chip IC 1 connects the anode of diode D1，The negative electrode of diode D1 connects resistance R7、The negative electrode of diode D2 and the base stage of audion V1，The emitter stage of audion V1 connects resistance R8，The other end of resistance R8 connects the pin 1 of chip IC 3，Pin 2 ground connection of chip IC 3，The pin 3 of chip IC 3 connects the other end of LED lamp H，The pin 4 of chip IC 3 connects resistance R9，The other end ground connection of resistance R9，The model of described chip IC 1 and chip IC 2 is LM321，Chip IC 3 is 4N25 photo-coupler.
Diode D1 and diode D2 is light emitting diode.
Operation principle of the present utility model is: chip IC 1 in circuit and chip IC 2 are respectively used to the overvoltage detection of under-voltage detection, inverting input 1 foot of chip IC 1 and in-phase input end 3 foot of chip IC 2 connect the negative pole of three end adjustable reference source P each through resistance R6, therefore its voltage is stationary value V, when input is higher than overvoltage marginal value or during lower than under-voltage marginal value, 1 foot magnitude of voltage of chip IC 2 can be higher than 3 feet of V or chip IC 1 can lower than V, 4 feet in chip IC 1 or chip IC 2 will produce low level, audion V1 is too low and end due to base voltage, light emitting diode within photo-coupler IC1 can not be luminous.At this moment, its internal phototriode is also switched off, and supply voltage can not be powered to LED group H, thus realizing under-voltage and over-voltage protecting function.
Claims (2)
- null1. a LED safeguard protection power circuit，Including resistance R1、Resistance R2、Chip IC 1 and LED lamp H，It is characterized in that，One end of described resistance R1 connects resistance R2、Resistance R5、Resistance R7、The colelctor electrode of audion V1、LED lamp H and power supply VCC，The other end of resistance R1 connects the pin 1 of resistance R3 and chip IC 1，The other end of resistance R2 connects the pin 3 of resistance R4 and chip IC 1，The other end of resistance R3 and the equal ground connection of the other end of resistance R4，The other end of resistance R5 connects resistance R6、The negative electrode of three end adjustable reference source P and the control pole of three end adjustable reference source P，The other end of resistance R6 connects the pin 1 of chip IC 1 and the pin 3 of chip IC 2，The pin 4 of chip IC 1 connects the anode of diode D1，The negative electrode of diode D1 connects resistance R7、The negative electrode of diode D2 and the base stage of audion V1，The emitter stage of audion V1 connects resistance R8，The other end of resistance R8 connects the pin 1 of chip IC 3，Pin 2 ground connection of chip IC 3，The pin 3 of chip IC 3 connects the other end of LED lamp H，The pin 4 of chip IC 3 connects resistance R9，The other end ground connection of resistance R9，The model of described chip IC 1 and chip IC 2 is LM321，Chip IC 3 is 4N25 photo-coupler.
- 2. a kind of LED safeguard protection power circuit according to claim 1, it is characterised in that described diode D1 and diode D2 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101366.2U CN205377255U (en) | 2016-02-02 | 2016-02-02 | LED safety protection power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101366.2U CN205377255U (en) | 2016-02-02 | 2016-02-02 | LED safety protection power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205377255U true CN205377255U (en) | 2016-07-06 |
Family
ID=56264320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620101366.2U Expired - Fee Related CN205377255U (en) | 2016-02-02 | 2016-02-02 | LED safety protection power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205377255U (en) |
-
2016
- 2016-02-02 CN CN201620101366.2U patent/CN205377255U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2901019Y (en) | LED lighting lamp | |
| CN205491293U (en) | Solar energy LED lighting control circuit | |
| CN205377255U (en) | LED safety protection power supply circuit | |
| CN205754941U (en) | A kind of photovoltaic voltage stabilizing LED illumination lamp | |
| CN202841601U (en) | Constant-current power supply circuit | |
| CN205491299U (en) | LED street lamp constant voltage power supply circuit | |
| CN205546082U (en) | Simple and practical's LED DC power supply | |
| CN205546058U (en) | Intelligence LED power control circuit | |
| CN205378292U (en) | Excessive pressure undervoltage protection LED lamp | |
| CN204929328U (en) | Energy -conserving LED of reputation | |
| CN207692095U (en) | A kind of energy-saving LED illumination adjuster | |
| CN205847671U (en) | A kind of long life lighting lamp controller | |
| CN206350199U (en) | A kind of LED street lamp | |
| CN205491351U (en) | Dual supply LED time delay lamp controller | |
| CN206472350U (en) | A kind of LED DC power supply circuits | |
| CN205356750U (en) | A electron fuse circuit for LED lamp | |
| CN207665238U (en) | A kind of time delayed turn-off LED illumination lamp | |
| CN205584546U (en) | LED constant -current source circuit | |
| CN205566709U (en) | Anti -interference power supply circuit of LED | |
| CN205336601U (en) | Energy -saving long -life LED lighting circuit | |
| CN205454140U (en) | Anti -interference photovoltaic LED lighting lamp circuit | |
| CN205648098U (en) | Multi -functional LED lighting circuit | |
| CN205320335U (en) | Compatible ballast's LED power | |
| CN205544199U (en) | LED overvoltage protection control circuit | |
| CN205142626U (en) | LED eyeshield desk lamp control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20170202 |