CN200944695Y - Electronic ballast of fluorescent lamp - Google Patents
Electronic ballast of fluorescent lamp Download PDFInfo
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- CN200944695Y CN200944695Y CN 200620041381 CN200620041381U CN200944695Y CN 200944695 Y CN200944695 Y CN 200944695Y CN 200620041381 CN200620041381 CN 200620041381 CN 200620041381 U CN200620041381 U CN 200620041381U CN 200944695 Y CN200944695 Y CN 200944695Y
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Abstract
The utility model discloses a novel electronic ballast for fluorescent lamp which adds a power voltage signal processing device to a dimmer, therebychanging the function of the power inlet wire from prior mere power transmission to including signal control simultaneously and realizing brightness adjustment based on prior connection mode. The electronic ballast for fluorescent lamp comprises a casing, a rectifier and filter circuit (AC/DC inverter), a high-frequency inverter circuit (DC/AC), a control circuit for controllable output of high-frequency driving signal and other control signals, a signal feedback circuit, a sampling and signal processing circuit for translating the conduction angle change of a silicon controlled rectifier into voltage signal, a high-frequency output circuit for receiving above-mentioned voltage signal and outputting high-frequency current to a lamp tube load according to preset programs and a lamp tube load. The electronic ballast for fluorescent lamp of the utility model realizes light adjusting function and achieves the objective of the utility model by recognizing the light adjusting phase angle change of the silicon controlled rectifier.
Description
Technical field
The utility model relates to a kind of electric ballast, particularly a kind of electronic ballast for fluoresent lamp of phase control dimming.
Background technology
Along with the raising of people to lighting quality, the fluorescent lamp of traditional constant brightness can not satisfy the daily life needs, also is unfavorable for energy savings, and the fluorescent lamp of adjustable brightness is the inexorable trend of development.At present, general light adjusting circuit is to increase controlling unit in ballast, and the holding wire that is independent of outside the power line transmits dim signal, and the obvious like this complexity that increases circuit connection is hindered attractive in appearance.
The utility model content
The purpose of this utility model provides a kind of novel electronic ballast for fluoresent lamp, by in dimmer, introducing the power supply voltage signal processing unit, electric power incoming line is changed into by original simple transmission electric energy comprised control signal simultaneously, on the wiring basis of original mode of connection, realized the adjustable of brightness.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of electronic ballast for fluoresent lamp, comprise a housing, it is characterized in that: described electronic ballast for fluoresent lamp comprises that also the control circuit of a current rectifying and wave filtering circuit (AC/DC inverter), a high-frequency inverter circuit (DC/AC), a may command, output high-frequency driving signal and other control signal, a signal feedback circuit, change the sampling and the signal processing circuit, that are converted into voltage signal with thyristor operating angle and receive above-mentioned voltage signal, export high frequency output circuit and the tube load of high-frequency current to tube load by preset program; The output of described current rectifying and wave filtering circuit inserts described high-frequency inverter circuit, sampling and signal processing circuit and high-frequency output circuit, the output of described sampling and signal processing inserts described high-frequency inverter circuit, control circuit and high-frequency output circuit, described control circuit is connected with described signal feedback circuit, the output of described signal feedback circuit inserts described high-frequency output circuit and tube load, and the output of described high-frequency output circuit is connected with described tube load.
Further, the DC filtering that constitutes of the rectifying part that constitutes of the EMI inhibitor, diode D1, D2, D3, D4, capacitor C 4, C5, the C6 that are made of inductance L 1 and capacitor C 1 of described current rectifying and wave filtering circuit and capacitor C 2, C3 is partly formed; Described inductance L 1 and capacitor C 1 series connection and then in parallel with resistance R 21 respectively; One end of described resistance R 21 connects electrochemical capacitor C2 negative pole and C3 positive pole respectively, and the other end of resistance R 21 inserts described sampling and signal processing circuit; Diode D1, D2, D3, D4 are cascaded successively, and the positive pole of electrochemical capacitor C2 is connected with the negative pole of diode D1, inserts described high-frequency inverter circuit again; One end of capacitor C 6 connects capacitor C 4 and C5 respectively, and the other end of capacitor C 6 connects the positive pole of diode D4 and the negative pole of electrochemical capacitor C3, ground connection then respectively; The positive pole of one terminating diode D1 of capacitor C 5, the other end of capacitor C 4 inserts described high-frequency output circuit.
Further, described high-frequency inverter circuit is made up of inductance L 3, capacitor C 10, transistor T 1, T2 and resistance R 3, R4; The output of the described current rectifying and wave filtering circuit of input termination of described high-frequency inverter circuit, described high-frequency inverter circuit is connected with control circuit; The drain electrode of described transistor T 1 is connected with the source electrode of T2, and the grid of transistor T 1 is connected with resistance R 3, and the other end of resistance R 3 is connected with transformer L3, and described transformer L3 is connected respectively in described control circuit and the high-frequency output circuit; The grid of transistor T 2 is connected with resistance R 4, and the other end of resistance R 4 inserts described control circuit.
Further, described control circuit comprises the IC chip of a controllable frequency and attached peripheral circuit thereof.
Further, described signal feedback circuit is made up of resistance R 5, R6, R7, R8, R9, R13, R14, R15, R16, R23, capacitor C 15, diode D8 and transformer L5; Described resistance R 13, R14 series connection, the described high-frequency output circuit of another termination of resistance R 13, the other end of resistance R 14 connects the positive pole of R15 and diode D8 respectively, the negative pole of diode D8 is connected with capacitor C 15, resistance R 16, R23 respectively, the other end of capacitor C 15 is connected with the other end of resistance R 15, then ground connection; Transformer L5 is connected with tube load, and transformer L5 is connected with resistance R 5, R6, R9 respectively, and the other end of resistance R 5, R6 is connected to each other, then ground connection; Transformer L5 connects resistance R 7, R8 successively, and the other end of resistance R 7 is connected with transformer L5, then ground connection; The other end of described resistance R 8, R9, R16, R23 is connected with control circuit.
Further, described sampling and signal processing circuit are made up of resistance R 17, R18, R19, R20, R21, R22, capacitor C 7, C8, C9, voltage-stabiliser tube D5, diode D6, and the input of described sampling and signal processing circuit is connected the output of current rectifying and wave filtering circuit.
Further, described high-frequency output circuit is made up of capacitor C 13, C14 and inductance L 4, and the input of described high-frequency output circuit connects the output of high-frequency inverter circuit.The output termination tube load of described high-frequency output circuit.
Further, can insert one between described current rectifying and wave filtering circuit and the described DC filtering part and be used to obtain the PFC booster converter that the low current harmonic distortion realizes High Power Factor.
Electronic ballast for fluoresent lamp of the present utility model is realized the effect of light modulation by the change of identification silicon controlled dimmer for light control phase angle, reaches the purpose of this utility model.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structured flowchart of the utility model electronic ballast for fluoresent lamp.
Fig. 2 is the electrical schematic diagram of the utility model electronic ballast for fluoresent lamp.
Embodiment
Embodiment 1
Referring to Fig. 1 and a kind of electronic ballast for fluoresent lamp of Fig. 2, comprise a housing, it is characterized in that: described electronic ballast for fluoresent lamp comprises that also control circuit 3, a signal feedback circuit 4, of a current rectifying and wave filtering circuit 1 (AC/DC inverter), a high-frequency inverter circuit 2 (DC/AC), a may command, output high-frequency driving signal and other control signal change the sampling and the signal processing circuit 5, that are converted into voltage signal with thyristor operating angle and receive above-mentioned voltage signal, export high-frequency output circuit 6 and the tube load 7 of high-frequency current to tube load by preset program.
The EMI inhibitor that described current rectifying and wave filtering circuit 1 is made of inductance L 1 and capacitor C 1, the DC filtering that rectifying part that diode D1, D2, D3, D4, capacitor C 4, C5, C6 constitute and capacitor C 2, C3 constitute is partly formed.Described current rectifying and wave filtering circuit 1 is connected with the mains ac power supply with elimination High-frequency Interference clutter, and the alternating voltage of input is converted to direct voltage.
Described high-frequency inverter circuit 2 is made up of inductance L 3, capacitor C 10, transistor T 1, T2 and resistance R 3, R4.The output of the described current rectifying and wave filtering circuit 1 of input termination of described high-frequency inverter circuit 2, described high-frequency inverter circuit 2 is connected with 11 with the high-frequency driving signal pin 9 of the IC that control circuit 3 comprises, the operating frequency of described high-frequency inverter circuit 2 is by the driving signal frequency decision of described IC, under this frequency, inductance L 4 correspondences in high-frequency output circuit 6 loops certain specific impedance, this impedance has just determined lamp current.
Described control circuit 3 comprises the IC of a controllable frequency and attached peripheral circuit thereof, and each control pin of IC is connected with the related peripheral circuit.
Described signal feedback circuit 4 is made up of resistance R 5, R6, R7, R8, R9, R13, R14, R15, R16, R23, capacitor C 15, diode D8 and inductance L 5.Resistance R 13, R14, R15, R16, R23, diode D8, capacitor C 15 one tunnel be the control pin 2 and 10 of access control chip IC respectively, and resistance R 5, R6, R7, R8, R9, inductance L 5 one tunnel be the control pin 3 and 15 of access control chip IC respectively.
Described sampling and signal processing circuit 5 are made up of resistance R 17, R18, R19, R20, R21, R22, voltage-stabiliser tube D5, diode D6, capacitor C 7, C8, C9, and the input of described sample circuit 5 is connected the input of current rectifying and wave filtering circuit 1.Described sample circuit 5 is from the AC power end sampling of controllable silicon dimmer output, the signal processing circuit of forming by R17, R18, R19, R20, R21, R22, voltage-stabiliser tube D5, diode D6, capacitor C 8, C9 after C7 filtering direct current and step-down is converted to voltage signal with the variation of thyristor operating angle, offer the dim signal input control pin 8 of IC that control circuit 3 comprises, the control pin 14 of another road by resistance R 24 back access control chip IC by way of compensation.
Described high-frequency output circuit 6 is made up of capacitor C 13, C14 and inductance L 4, the input of described high-frequency output circuit 6 connects the output of described high-frequency inverter circuit 2, and the high-frequency current of exporting from described high-frequency inverter circuit 2 can stably work tube load 7 by described high-frequency output circuit 6.
Can insert one between described current rectifying and wave filtering circuit 1 and the described DC filtering part and be used to obtain the PFC booster converter that the low current harmonic distortion realizes High Power Factor.Make from current rectifying and wave filtering circuit 1 output and can obtain stable nominal voltage signal.
The sampled point of sampling and signal processing circuit 5 is the alternating voltage of controllable silicon dimmer output, utilize the effective value of this voltage to become the positive relation with the angle of flow of controllable silicon dimmer, processing through over-sampling and signal processing circuit 5, make controllable silicon dimmer when certain limit is transferred back and forth, export the effective voltage signal, chip IC is by implementing the control to output frequency to the analyzing and processing of this voltage signal, control the variation of output current by frequency change, realize the function of light modulation.
Certainly; present embodiment is not limited to the utility model; to those of ordinary skill in the art; still can do multiple variation to present embodiment; therefore; every employing analog structure of the present utility model and similar variation thereof all should be listed the protection range of protection range claims of the present utility model in.
Claims (8)
1, a kind of electronic ballast for fluoresent lamp is characterized in that: described electronic ballast for fluoresent lamp comprises that the control circuit of a current rectifying and wave filtering circuit (AC/DC inverter), a high-frequency inverter circuit (DC/AC), a may command, output high-frequency driving signal and other control signal, a signal feedback circuit, change the sampling and the signal processing circuit, that are converted into voltage signal with thyristor operating angle and receive above-mentioned voltage signal, export high-frequency output circuit and the tube load of high-frequency current to tube load by preset program; The output of described current rectifying and wave filtering circuit inserts described high-frequency inverter circuit, sampling and signal processing circuit and high-frequency output circuit, the output of described sampling and signal processing inserts described high-frequency inverter circuit, control circuit and high-frequency output circuit, described control circuit is connected with described signal feedback circuit, the output of described signal feedback circuit inserts described high-frequency output circuit and tube load, and the output of described high-frequency output circuit is connected with described tube load.
2, electric ballast according to claim 1 is characterized in that: the DC filtering that the rectifying part that the EMI inhibitor that described current rectifying and wave filtering circuit is made of inductance L 1 and capacitor C 1, diode D1, D2, D3, D4, capacitor C 4, C5, C6 constitute and capacitor C 2, C3 constitute is partly formed; Described inductance L 1 and capacitor C 1 series connection and then in parallel with resistance R 21 respectively; One end of described resistance R 21 connects electrochemical capacitor C2 negative pole and C3 positive pole respectively, and the other end of resistance R 21 inserts described sampling and signal processing circuit; Diode D1, D2, D3, D4 are cascaded successively, and the positive pole of electrochemical capacitor C2 is connected with the negative pole of diode D1, inserts described high-frequency inverter circuit again; One end of capacitor C 6 connects capacitor C 4 and C5 respectively, and the other end of capacitor C 6 connects the positive pole of diode D4 and the negative pole of electrochemical capacitor C3, ground connection then respectively; The positive pole of one terminating diode D1 of capacitor C 5, the other end of capacitor C 4 inserts described high-frequency output circuit.
3, electric ballast according to claim 1 is characterized in that: described high-frequency inverter circuit is made up of inductance L 3, capacitor C 10, transistor T 1, T2 and resistance R 3, R4; The output of the described current rectifying and wave filtering circuit of input termination of described high-frequency inverter circuit, described high-frequency inverter circuit is connected with control circuit; The drain electrode of described transistor T 1 is connected with the source electrode of T2, and the grid of transistor T 1 is connected with resistance R 3, and the other end of resistance R 3 is connected with transformer L3, and described transformer L3 is connected respectively in described control circuit and the high-frequency output circuit; The grid of transistor T 2 is connected with resistance R 4, and the other end of resistance R 4 inserts described control circuit.
4, electric ballast according to claim 1 is characterized in that: described control circuit comprises the IC chip of a controllable frequency and attached peripheral circuit thereof.
5, electric ballast according to claim 1 is characterized in that: described signal feedback circuit is made up of resistance R 5, R6, R7, R8, R9, R13, R14, R15, R16, R23, capacitor C 15, diode D8 and transformer L5; Described resistance R 13, R14 series connection, the described high-frequency output circuit of another termination of resistance R 13, the other end of resistance R 14 connects the positive pole of R15 and diode D8 respectively, the negative pole of diode D8 is connected with capacitor C 15, resistance R 16, R23 respectively, the other end of capacitor C 15 is connected with the other end of resistance R 15, then ground connection; Transformer L5 is connected with tube load, and transformer L5 is connected with resistance R 5, R6, R9 respectively, and the other end of resistance R 5, R6 is connected to each other, then ground connection; Transformer L5 connects resistance R 7, R8 successively, and the other end of resistance R 7 is connected with transformer L5, then ground connection; The other end of described resistance R 8, R9, R16, R23 is connected with control circuit.
6, electric ballast according to claim 1, it is characterized in that: described sampling and signal processing circuit are made up of resistance R 17, R18, R19, R20, R21, R22, capacitor C 7, C8, C9, and the input of described sampling and signal processing circuit is connected the AC power end of controllable silicon dimmer output.
7, electric ballast according to claim 1 is characterized in that: described high-frequency output circuit is made up of capacitor C 13, C14 and inductance L 4, and the input of described high-frequency output circuit connects the output of high-frequency inverter circuit; The output termination tube load of described high-frequency output circuit.
8, electric ballast according to claim 1 is characterized in that: can insert one between described current rectifying and wave filtering circuit and the described DC filtering part and be used to obtain the PFC booster converter that the low current harmonic distortion realizes High Power Factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041381 CN200944695Y (en) | 2006-04-27 | 2006-04-27 | Electronic ballast of fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041381 CN200944695Y (en) | 2006-04-27 | 2006-04-27 | Electronic ballast of fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200944695Y true CN200944695Y (en) | 2007-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620041381 Expired - Fee Related CN200944695Y (en) | 2006-04-27 | 2006-04-27 | Electronic ballast of fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200944695Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714909A (en) * | 2010-01-15 | 2012-10-03 | 皇家飞利浦电子股份有限公司 | A power factor correction circuit of an electronic ballast |
-
2006
- 2006-04-27 CN CN 200620041381 patent/CN200944695Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714909A (en) * | 2010-01-15 | 2012-10-03 | 皇家飞利浦电子股份有限公司 | A power factor correction circuit of an electronic ballast |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070905 Termination date: 20130427 |