CN202773160U - Electronic ballast - Google Patents

Electronic ballast Download PDF

Info

Publication number
CN202773160U
CN202773160U CN2012203188381U CN201220318838U CN202773160U CN 202773160 U CN202773160 U CN 202773160U CN 2012203188381 U CN2012203188381 U CN 2012203188381U CN 201220318838 U CN201220318838 U CN 201220318838U CN 202773160 U CN202773160 U CN 202773160U
Authority
CN
China
Prior art keywords
terminal
diode
capacitor
field effect
effect transistor
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 - Lifetime
Application number
CN2012203188381U
Other languages
Chinese (zh)
Inventor
丁旭昭
薛春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2012203188381U priority Critical patent/CN202773160U/en
Application granted granted Critical
Publication of CN202773160U publication Critical patent/CN202773160U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The utility model provides an electronic ballast. The electronic ballast comprises a rectifying circuit. An input end of the rectifying circuit is connected to an alternating current power source through a filtering circuit; an output end of the rectifying circuit is connected with an input end of a high-frequency inverter circuit through a power factor correction circuit and the filtering circuit; an output end of the high-frequency inverter circuit is connected to a load; and field-effect transistors in the high-frequency inverter circuit have negative temperature coefficients. According to the electronic ballast of the utility model, the power factor correction circuit enables the power factor of the electronic ballast to achieve above 0.99 with low harmonic content; the field-effect transistors having the negative temperature coefficients are adopted in the high-frequency inverter circuit, which enables low power consumption, and the field-effect transistors can be switched off/on in a zero-voltage state, and therefore, switching loss can be reduced, and the electronic ballast can be always in dynamic balance at a certain temperature, thus, the service life of the electronic ballast can achieve more than ten years; and the working frequency of the high-frequency inverter circuit in the utility model can reach 50 KHz, thereby eliminating a stroboscopic phenomenon.

Description

A kind of electric ballast
Technical field
The utility model relates to a kind of ballast, specifically, relates to a kind of electric ballast.
Background technology
The present situation of throwing light on the present society: one, extensive main flow illuminator, universities, middle and primary schools, kindergarten, organ, enterprises and institutions still generally adopt inductance type ballast to start fluorescent lamp, its shortcoming is that power factor is low, waste a large amount of useless power, ballast waste electric energy itself is large, and waste a large amount of non-renewable resources noble metal silicon steel sheets and copper material, the low-voltage startability is poor, can't eliminate 50 cycle stroboscopics, harm people's health, particularly teenager's eyesight and optic nerve system (American-European countries has forbidden to produce, use).Two, adopt electric ballast to start fluorescent lamp, yet the existing ubiquitous problem of electric ballast is that power factor is low, energy-conservation not obvious, life-span is short, frequency is low, can not effectively eliminate stroboscopic, particularly when concentrating extensive the use, can have serious consequences, because the harmonic content of existing electric ballast is high, crest ratio is large, causes distribution supply transformer current in middle wire to strengthen, the heating aggravation, even burn, cause easily security incident, in addition because the power factor low (about 0.6) of existing electric ballast has a strong impact on the number that power supply capacity of the same race is installed ballast, the 40W electronic ballast fluorescent lamp is installed as example take the 400KVA power supply, when power factor is 0.6, only allow to install 720, and when power factor be 0.95 when above, can install 5700, just because of these reasons, the key lighting system so far still can not the wide-scale adoption electric ballast.Simultaneously, what Present Domestic exoelectron ballast generally used is the components and parts of positive temperature coefficient, and the vicious circle of components and parts temperature is risen, the easy heating burnout of components and parts, thereby the life-span is short, traction is low.
The utility model content
The technical problems to be solved in the utility model is, a kind of electric ballast is provided, and power factor reaches more than 0.99, and harmonic content is low, and the life-span reached more than 10 years, and has eliminated stroboscopic.
The utility model is that the technical scheme that its technical problem of solution adopts is: a kind of electric ballast is provided, comprise rectification circuit, the input of described rectification circuit connects AC power behind filter circuit, the output of this rectification circuit is connected to the input of high-frequency inverter circuit behind circuit of power factor correction, filter circuit, the output of described high-frequency inverter circuit connects load, and the field effect transistor in this high-frequency inverter circuit has negative temperature coefficient.
Above-mentioned electric ballast wherein, also is connected protective circuit between described high-frequency inverter circuit and the load.
Above-mentioned electric ballast wherein, is provided with start-up circuit between described high-frequency inverter circuit and the filter circuit.
Above-mentioned electric ballast, wherein, described load also connects preheat circuit.
Above-mentioned electric ballast, wherein, the input of the rectification circuit DB of this electric ballast is via resistance R 1, inductance E 0, capacitor C 1, inductance E 1And capacitor C 2Be connected to AC power Vac, the forward output contact resistance R of rectification circuit DB behind the input filter circuit that forms 2The first terminal, resistance R 2The second terminal be connected respectively capacitor C with public terminal 3Two ends; Capacitor C 3The two ends mutually diode D of series connection in parallel 5, diode D 6With diode D 7, diode D 5Two ends shunt capacitance C 5, diode D 7Two ends shunt capacitance C 4, capacitor C 3Two ends are the mutually diode D of series connection in parallel also 9With diode D 8Resistance R 3The first terminal contact resistance R 2The second terminal and capacitor C 6The first terminal, R 3The second terminal, C 6The second terminal contact resistance R respectively 4The first terminal and diode D 10Negative electrode, diode D 10The anodic bonding resistance R 4The second terminal, and resistance R 4The second terminal and public terminal between also be connected capacitor C parallel with one another 7And capacitor C 8Resistance R 3The first terminal connect field effect transistor G 1Drain electrode, field effect transistor G 1Drain electrode, grid between contact resistance R 10, field effect transistor G 1Drain electrode, source electrode connect respectively diode D 15Negative electrode, anode, field effect transistor G 1Source electrode pass through resistance R 11Be connected to field effect transistor G 2Drain electrode, field effect transistor G 1Grid and field effect transistor G 1Source electrode between be connected with resistance R parallel with one another 9, capacitor C 10, field effect transistor G 1Grid, field effect transistor G 2Drain electrode connect respectively diode D 12Negative electrode, anode, diode D 12Negative electrode and anode between the mutually resistance R of series connection in parallel also 6, inductance L 1Resistance R 4The second terminal pass through resistance R 5, diode D 11The first terminal, the field effect transistor G that connect respectively bidirectional diode SD 2Drain electrode, be connected capacitor C between the first terminal of bidirectional diode SD and the public terminal 9, the second terminal of bidirectional diode SD connects field effect transistor G 2Grid, diode D 13Negative electrode, diode D 13The anodic bonding public terminal, diode D 13Also connect the mutually resistance R of series connection between negative electrode, the anode 7, inductance L 2, field effect transistor G 2Grid, source electrode between connect resistance R parallel with one another 8, capacitor C 11, field effect transistor G 2Source electrode pass through resistance R 12Connect public terminal, field effect transistor G 2Drain electrode, source electrode connect respectively field effect transistor D 14Negative electrode, anode; Capacitor C 12The first terminal, the second terminal connect respectively field effect transistor G 1Drain electrode, field effect transistor G 2Drain electrode, capacitor C 12The second terminal connect inductance L 3The first terminal, inductance L 3The second terminal connection transformer B 1Elementary the first terminal and transformer B 2Elementary the first terminal, B 1The second elementary terminal and transformer B 2The second elementary terminal is connecting tube T respectively 1, fluorescent tube T 2The filament of one end, fluorescent tube T 1, fluorescent tube T 2The filament of one end is respectively through capacitor C 12, capacitor C 13After all be connected to capacitor C 12The first terminal, fluorescent tube T 1The filament series capacitance C at two ends 15, fluorescent tube T 2The filament series capacitance C at two ends 16Transformer B 1Secondary the first terminal and transformer B 2Secondary the first terminal all connects public terminal, transformer B 1The second secondary terminal and transformer B 2The second secondary terminal all connects diode D 16Anode, diode D 16Negative electrode pass through resistance R 13Connect capacitor C 17The first terminal, capacitor C 17The second terminal connect public terminal and capacitor C 17The first terminal also connect field effect transistor G 2Grid.
Compared with prior art, the utlity model has following beneficial effect: the electric ballast that the utility model provides, by circuit of power factor correction so that the power factor of electric ballast reach more than 0.99, harmonic content is low, in high-frequency inverter circuit, adopt and have the field effect transistor of negative temperature coefficient, power consumption is little, and utilize electronic switching technology to make field effect transistor under the zero-pressure state, carry out switch, reduced switching loss, make electric ballast be at a certain temperature all the time dynamic equilibrium, thereby so that the life-span of electric ballast reach more than 10 years.And the operating frequency of the high-frequency inverter circuit in the utility model reaches 50KHz, has eliminated stroboscopic.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structured flowchart of a kind of electric ballast of the utility model;
Fig. 2 is the circuit embodiments of a kind of electric ballast of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is further described:
Fig. 1 is the structured flowchart of a kind of electric ballast of the utility model, as shown in Figure 1, the electric ballast that the utility model provides, comprise rectification circuit 3, the input of rectification circuit 3 connects AC power 1 behind filter circuit 2, the output of this rectification circuit 3 is through circuit of power factor correction 4, be connected to the input of high-frequency inverter circuit 6 behind the filter circuit 5, by circuit of power factor correction 4 so that the power factor of electric ballast reach more than 0.99, harmonic content is low, the output of high-frequency inverter circuit 6 connects load 7, and the field effect transistor in this high-frequency inverter circuit 6 has negative temperature coefficient, power consumption is little, and utilize electronic switching technology to make field effect transistor under the zero-pressure state, carry out switch, reduce switching loss, make electric ballast be at a certain temperature all the time dynamic equilibrium, and the operating frequency of high-frequency inverter circuit 6 has reached 50KHz, eliminated stroboscopic, thereby realized energy-efficient, safety, environmental protection, green illumination.In addition, also be connected protective circuit 9 between high-frequency inverter circuit 6 and the load 7, be provided with start-up circuit 10 between high-frequency inverter circuit 6 and the filter circuit 5, load 7 also connects preheat circuit 8.Preferably, load 7 is the gaseous discharge lamps such as fluorescent lamp.
Fig. 2 is the circuit embodiments of a kind of electric ballast of the utility model, and as shown in Figure 2, the input of rectifier bridge DB is via resistance R 1, inductance E 0, capacitor C 1, inductance E 1And capacitor C 2Be connected to AC power Vac, the forward output contact resistance R of rectification circuit DB behind the input filter circuit that forms 2The first terminal, resistance R 2The second terminal be connected respectively capacitor C with public terminal (the negative sense output of rectification circuit DB) 3Two ends.Capacitor C 3The two ends mutually diode D of series connection in parallel 5, diode D 6With diode D 7, diode D 5Two ends shunt capacitance C 5, diode D 7Two ends shunt capacitance C 4, capacitor C 3Two ends are the mutually diode D of series connection in parallel also 9With diode D 8Resistance R 3The first terminal contact resistance R 2The second terminal and capacitor C 6The first terminal, R 3The second terminal, C 6The second terminal contact resistance R respectively 4The first terminal and diode D 10Negative electrode, diode D 10The anodic bonding resistance R 4The second terminal, and resistance R 4The second terminal and public terminal between also be connected capacitor C parallel with one another 7And capacitor C 8Resistance R 3The first terminal connect field effect transistor G 1Drain electrode, field effect transistor G 1Drain electrode, grid between contact resistance R 10, field effect transistor G 1Drain electrode, source electrode connect respectively diode D 15Negative electrode, anode, field effect transistor G 1Source electrode pass through resistance R 11Be connected to field effect transistor G 2Drain electrode, field effect transistor G 1Grid and field effect transistor G 1Source electrode between be connected with resistance R parallel with one another 9, capacitor C 10, field effect transistor G 1Grid, field effect transistor G 2Drain electrode connect respectively diode D 12Negative electrode, anode, diode D 12Negative electrode and anode between the mutually resistance R of series connection in parallel also 6, inductance L 1Resistance R 4The second terminal pass through resistance R 5, diode D 11The first terminal, the field effect transistor G that connect respectively bidirectional diode SD 2Drain electrode, be connected capacitor C between the first terminal of bidirectional diode SD and the public terminal 9, the second terminal of bidirectional diode SD connects field effect transistor G 2Grid, diode D 13Negative electrode, diode D 13The anodic bonding public terminal, diode D 13Also connect the mutually resistance R of series connection between negative electrode, the anode 7, inductance L 2, field effect transistor G 2Grid, source electrode between connect resistance R parallel with one another 8, capacitor C 11, field effect transistor G 2Source electrode pass through resistance R 12Connect public terminal, field effect transistor G 2Drain electrode, source electrode connect respectively field effect transistor D 14Negative electrode, anode.Capacitor C 12The first terminal, the second terminal connect respectively field effect transistor G 1Drain electrode, field effect transistor G 2Drain electrode, capacitor C 12The second terminal connect inductance L 3The first terminal, inductance L 3The second terminal connection transformer B 1Elementary the first terminal and transformer B 2Elementary the first terminal, B 1The second elementary terminal and transformer B 2The second elementary terminal is connecting tube T respectively 1, fluorescent tube T 2The filament of one end, fluorescent tube T 1, fluorescent tube T 2The filament of one end is respectively through capacitor C 12, capacitor C 13After all be connected to capacitor C 12The first terminal, fluorescent tube T 1The filament series capacitance C at two ends 15, fluorescent tube T 2The filament series capacitance C at two ends 16Transformer B 1Secondary the first terminal and transformer B 2Secondary the first terminal all connects public terminal, transformer B 1The second secondary terminal and transformer B 2The second secondary terminal all connects diode D 16Anode, diode D 16Negative electrode pass through resistance R 13Connect capacitor C 17The first terminal, capacitor C 17The second terminal connect public terminal and capacitor C 17The first terminal also connect field effect transistor G 2Grid.
In sum, the electric ballast that the utility model provides, by circuit of power factor correction 4 so that the power factor of electric ballast reach more than 0.99, harmonic content is low, in high-frequency inverter circuit 6, adopt and have the field effect transistor of negative temperature coefficient, power consumption is little, and utilize electronic switching technology to make field effect transistor under the zero-pressure state, carry out switch, reduced switching loss, make electric ballast be at a certain temperature all the time dynamic equilibrium, thereby so that the life-span of electric ballast reach more than 10 years.And the operating frequency of the high-frequency inverter circuit in the utility model 6 reaches 50KHz, has eliminated stroboscopic.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims (5)

1. electric ballast, it is characterized in that: comprise rectification circuit, the input of described rectification circuit connects AC power behind filter circuit, the output of this rectification circuit is connected to the input of high-frequency inverter circuit behind circuit of power factor correction, filter circuit, the output of described high-frequency inverter circuit connects load, and the field effect transistor in this high-frequency inverter circuit has negative temperature coefficient.
2. electric ballast according to claim 1 is characterized in that: also be connected protective circuit between described high-frequency inverter circuit and the load.
3. electric ballast according to claim 1 is characterized in that: be provided with start-up circuit between described high-frequency inverter circuit and the filter circuit.
4. electric ballast according to claim 1, it is characterized in that: described load also connects preheat circuit.
5. electric ballast according to claim 4, it is characterized in that: the input of the rectification circuit DB of this electric ballast is via resistance R 1, inductance E 0, capacitor C 1, inductance E 1And capacitor C 2Be connected to AC power Vac, the forward output contact resistance R of rectification circuit DB behind the input filter circuit that forms 2The first terminal, resistance R 2The second terminal be connected respectively capacitor C with public terminal 3Two ends; Capacitor C 3The two ends mutually diode D of series connection in parallel 5, diode D 6With diode D 7, diode D 5Two ends shunt capacitance C 5, diode D 7Two ends shunt capacitance C 4, capacitor C 3Two ends are the mutually diode D of series connection in parallel also 9With diode D 8Resistance R 3The first terminal contact resistance R 2The second terminal and capacitor C 6The first terminal, R 3The second terminal, C 6The second terminal contact resistance R respectively 4The first terminal and diode D 10Negative electrode, diode D 10The anodic bonding resistance R 4The second terminal, and resistance R 4The second terminal and public terminal between also be connected capacitor C parallel with one another 7And capacitor C 8Resistance R 3The first terminal connect field effect transistor G 1Drain electrode, field effect transistor G 1Drain electrode, grid between contact resistance R 10, field effect transistor G 1Drain electrode, source electrode connect respectively diode D 15Negative electrode, anode, field effect transistor G 1Source electrode pass through resistance R 11Be connected to field effect transistor G 2Drain electrode, field effect transistor G 1Grid and field effect transistor G 1Source electrode between be connected with resistance R parallel with one another 9, capacitor C 10, field effect transistor G 1Grid, field effect transistor G 2Drain electrode connect respectively diode D 12Negative electrode, anode, diode D 12Negative electrode and anode between the mutually resistance R of series connection in parallel also 6, inductance L 1Resistance R 4The second terminal pass through resistance R 5, diode D 11The first terminal, the field effect transistor G that connect respectively bidirectional diode SD 2Drain electrode, be connected capacitor C between the first terminal of bidirectional diode SD and the public terminal 9, the second terminal of bidirectional diode SD connects field effect transistor G 2Grid, diode D 13Negative electrode, diode D 13The anodic bonding public terminal, diode D 13Also connect the mutually resistance R of series connection between negative electrode, the anode 7, inductance L 2, field effect transistor G 2Grid, source electrode between connect resistance R parallel with one another 8, capacitor C 11, field effect transistor G 2Source electrode pass through resistance R 12Connect public terminal, field effect transistor G 2Drain electrode, source electrode connect respectively field effect transistor D 14Negative electrode, anode; Capacitor C 12The first terminal, the second terminal connect respectively field effect transistor G 1Drain electrode, field effect transistor G 2Drain electrode, capacitor C 12The second terminal connect inductance L 3The first terminal, inductance L 3The second terminal connection transformer B 1Elementary the first terminal and transformer B 2Elementary the first terminal, B 1The second elementary terminal and transformer B 2The second elementary terminal is connecting tube T respectively 1, fluorescent tube T 2The filament of one end, fluorescent tube T 1, fluorescent tube T 2The filament of one end is respectively through capacitor C 12, capacitor C 13After all be connected to capacitor C 12The first terminal, fluorescent tube T 1The filament series capacitance C at two ends 15, fluorescent tube T 2The filament series capacitance C at two ends 16Transformer B 1Secondary the first terminal and transformer B 2Secondary the first terminal all connects public terminal, transformer B 1The second secondary terminal and transformer B 2The second secondary terminal all connects diode D 16Anode, diode D 16Negative electrode pass through resistance R 13Connect capacitor C 17The first terminal, capacitor C 17The second terminal connect public terminal and capacitor C 17The first terminal also connect field effect transistor G 2Grid.
CN2012203188381U 2012-07-02 2012-07-02 Electronic ballast Expired - Lifetime CN202773160U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012203188381U CN202773160U (en) 2012-07-02 2012-07-02 Electronic ballast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012203188381U CN202773160U (en) 2012-07-02 2012-07-02 Electronic ballast

Publications (1)

Publication Number Publication Date
CN202773160U true CN202773160U (en) 2013-03-06

Family

ID=47779696

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012203188381U Expired - Lifetime CN202773160U (en) 2012-07-02 2012-07-02 Electronic ballast

Country Status (1)

Country Link
CN (1) CN202773160U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102762017A (en) * 2012-07-02 2012-10-31 丁旭昭 Electronic ballast
CN104507246A (en) * 2015-01-15 2015-04-08 天津市中环三峰电子有限公司 Automatic power adjusting type ultraviolet lamp control circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102762017A (en) * 2012-07-02 2012-10-31 丁旭昭 Electronic ballast
CN102762017B (en) * 2012-07-02 2016-02-10 丁旭昭 A kind of electric ballast
CN104507246A (en) * 2015-01-15 2015-04-08 天津市中环三峰电子有限公司 Automatic power adjusting type ultraviolet lamp control circuit

Similar Documents

Publication Publication Date Title
CN201515528U (en) LED fluorescent lamp circuit
CN101841955A (en) General illumination LED drive circuit
CN204578876U (en) A kind of power driving circuit of AC/DC
CN202773160U (en) Electronic ballast
CN201813587U (en) Universal lighting LED driving circuit
CN201515527U (en) LED fluorescent lamp tube circuit
CN202103927U (en) Light-adjustable gas discharge lamp electronic ballast
CN201267048Y (en) Electric ballast for fluorescent lamp
CN102762017B (en) A kind of electric ballast
CN208241947U (en) High PF, can be achieved output larger current without stroboscopic LED lamp drive circuit
CN201937936U (en) Super energy-saving fluorescent lamp with long service life
CN101640966A (en) Power supply circuit of fluorescent lamp
CN201435865Y (en) Preheating circuit of electronic ballast
CN204634142U (en) Fluorescent lamp low-light illumination auxiliary device
CN101616519A (en) Constant-voltage LED illumination circuit
CN202535620U (en) Electronic ballast for high-pressure sodium lamp
CN1386040A (en) Low-harmonic compact type energy-saving lamp electronic ballast
CN205336573U (en) Compatible type emitting diode drive power supply
CN204089609U (en) A kind of Switching Power Supply of LED street lamp
CN103237396B (en) A kind of high-frequency electronic direct-current ballast circuit and fluorescent lamp
CN110650576B (en) Voltage automatic following sliding frequency power factor correction circuit
CN202679729U (en) LED fluorescent lamp system compatible with electronic ballast and inductance ballast
CN201450656U (en) Circuit of cold cathode fluorescent energy-saving lamp
CN201256477Y (en) DC electricity supply energy saving lamp
CN201467549U (en) Electronic ballast for bracket fluorescent lamp

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20130306

Effective date of abandoning: 20160210

C25 Abandonment of patent right or utility model to avoid double patenting