CN205812437U - The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply is powered - Google Patents
The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply is powered Download PDFInfo
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- CN205812437U CN205812437U CN201620211202.5U CN201620211202U CN205812437U CN 205812437 U CN205812437 U CN 205812437U CN 201620211202 U CN201620211202 U CN 201620211202U CN 205812437 U CN205812437 U CN 205812437U
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- power supply
- powered
- drive circuit
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Abstract
This utility model discloses the resistance current-limiting drive circuit that a kind of high frequency and high voltage sine waveform power supply is powered, including the rectification module being connected with feeder ear, the two ends of described rectification module are connected in parallel to electrodeless electric capacity C1 and resistance R1, one end of described resistance R1 connects current limiting resistance R2, the other end connects the negative pole having lamp string, and the other end of described current-limiting resistance R2 connects the positive pole of lamp string.Input of the present utility model is high_frequency sine wave, output is stable and isolates with electrical network, solve potential safety hazard, overcome power frequency stroboscopic phenomenon, use electrodeless electric capacity as the filtering device in constant-current source circuit, the filter effect of original electrochemical capacitor can not only be obtained completely, and overcome the dry drawback easily lost efficacy of electrochemical capacitor, have and export simple and reliable, stable, the advantage of length in service life of powering.
Description
Technical field
This utility model relates to illuminating brightening power supply technique field, is specifically related to a kind of high frequency and high voltage sine waveform power supply and powers
Resistance current-limiting drive circuit.
Background technology
At present due to Market competition, LED illuminator cost seems the most important.Part is the most fewer and feweri.?
It is simply mains-supplied mode, by AC/DC changer, the alternating current of 220V/50HZ is become DC source, and according to not
Add suitable lamp bead number with lamp bead supply voltage, and constant current device is serially connected with DC source both sides.This mode circuit is simple, electricity
Road current constant, efficiency is high.But also there is congenital defect simultaneously, owing to being coupled directly to civil power, have potential safety hazard；Due to civil power
Only 50HZ, so there being stroboscopic, for reducing the degree of stroboscopic, need to add electrochemical capacitor.Use electrochemical capacitor, due to electrochemical capacitor originally
The characteristic of body, the most dry, inefficacy, make circuit easily occurs clutter, usually occur not start, circuit reliability is beaten greatly
Discount.There is this prejudice, it is believed that filter capacitor can only use the filter effect that electrochemical capacitor could obtain always, even if
It has these disadvantages.
Summary of the invention
The purpose of this utility model is to solve above-mentioned technical problem, it is provided that a kind of simple, compact, power supply is steady
The resistance current-limiting drive circuit that fixed, the high frequency and high voltage sine waveform power supply of length in service life is powered.
For achieving the above object, the resistance current limliting that the high frequency and high voltage sine waveform power supply of this utility model design is powered drives electricity
Road, including the rectification module being connected with feeder ear, it is characterised in that: the two ends of described rectification module are connected in parallel to electrodeless electric capacity
One end of C1 and resistance R1, described resistance R1 connects current limiting resistance R2, and the other end connects the negative pole having lamp string, described current limliting electricity
The other end of resistance R2 connects the positive pole of lamp string.
In technique scheme, the LED that described lamp string is connected by multiple series aiding connections forms.
In technique scheme, described rectification module is full bridge rectifier.
Input of the present utility model is high_frequency sine wave, and output is stable and isolates with electrical network, solves potential safety hazard, overcomes
Power frequency stroboscopic phenomenon, uses electrodeless electric capacity as the filtering device in constant-current source circuit, can not only obtain original completely
The filter effect of electrochemical capacitor, and overcome the dry drawback easily lost efficacy of electrochemical capacitor, has that output is simple and reliable, power supply is steady
Fixed, the advantage of length in service life.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the resistance current-limiting drive circuit that this utility model high frequency and high voltage sine waveform power supply is powered；
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail:
The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply as shown in Figure 1 is powered, is connected including with feeder ear 1
Rectification module 2, the two ends of described rectification module 2 are connected in parallel to electrodeless electric capacity C1 and resistance R1, one end of described resistance R1
Connecting current limiting resistance R2, the other end connects the negative pole having lamp string 3, and the other end of described current-limiting resistance R2 is just connecting lamp string 3
Pole.The LED that described lamp string 3 is connected by multiple series aiding connections forms.Described rectification module 2 is full bridge rectifier.
Obviously, those skilled in the art can carry out various change and modification without deviating from this practicality newly to this utility model
The spirit and scope of type, so, if of the present utility model these amendment and modification belong to this utility model claim and
Within the scope of equivalent technologies, then this utility model is also intended to comprise these change and modification.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (3)
1. the resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply is powered, including the rectification being connected with feeder ear (1)
Module (2), it is characterised in that: the two ends of described rectification module (2) are connected in parallel to electrodeless electric capacity C1 and resistance R1, described resistance
One end of R1 connects current limiting resistance R2, and the other end connects the negative pole having lamp string (3), and the other end of described current-limiting resistance R2 connects
The positive pole of lamp string (3).
The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply the most according to claim 1 is powered, it is characterised in that:
The LED that described lamp string (3) is connected by multiple series aiding connections forms.
The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply the most according to claim 1 and 2 is powered, its feature exists
In: described rectification module (2) is full bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620211202.5U CN205812437U (en) | 2016-03-18 | 2016-03-18 | The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply is powered |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620211202.5U CN205812437U (en) | 2016-03-18 | 2016-03-18 | The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply is powered |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205812437U true CN205812437U (en) | 2016-12-14 |
Family
ID=58144889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620211202.5U Expired - Fee Related CN205812437U (en) | 2016-03-18 | 2016-03-18 | The resistance current-limiting drive circuit that high frequency and high voltage sine waveform power supply is powered |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205812437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071961A (en) * | 2017-01-18 | 2017-08-18 | 中山市美耐特光电有限公司 | It is a kind of effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon |
-
2016
- 2016-03-18 CN CN201620211202.5U patent/CN205812437U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071961A (en) * | 2017-01-18 | 2017-08-18 | 中山市美耐特光电有限公司 | It is a kind of effectively to weaken the high-voltage LED light bar of stroboscopic phenomenon |
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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: 20161214 |