CN2689649Y - Compact light-adjustable electromagnetic inducing lights - Google Patents
Compact light-adjustable electromagnetic inducing lights Download PDFInfo
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- CN2689649Y CN2689649Y CN 200420019654 CN200420019654U CN2689649Y CN 2689649 Y CN2689649 Y CN 2689649Y CN 200420019654 CN200420019654 CN 200420019654 CN 200420019654 U CN200420019654 U CN 200420019654U CN 2689649 Y CN2689649 Y CN 2689649Y
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- magnet ring
- electromagnetic induction
- induction lamp
- light modulation
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Abstract
The utility model relates to an illuminating lamp, in particular a compact light-adjustable electromagnetic inducing light. A controlling circuit can generate a high-frequency current to convey a coil equipped on a magnet ring, and the magnet ring generates a higher magnetic induction intensity to form an alternating magnetic field. This alternating magnetic field can couple the electric energy in a light tube to form an electric voltage, and the ionization of the gas and the amalgam in the tube is realized. The ionized mercury atom can send out ultraviolet rays to strike the fluorescent powder, so the light tube is lighted. This compact light-adjustable electromagnetic inducing light belongs to a new energy conservation lighting device which has no filament, high light effect, high light transmitting, long life and high power factor. The controlling circuit, the coil and the light tube are combined to from the compact light-adjustable electromagnetic inducing light by the utility model. The integrated structure is simple for manufacturing, and the working frequency is 250KHz. With an effective screening arrangement, the whole light has the advantage of miniaturization, and can easily pass through the EMC testing.
Description
Technical field
The utility model relates to a kind of electromagnetic induction lamp, especially relates to a kind of light modulation electromagnetic induction lamp of compact.
Background technology
Electromagnetic induction lamp can be widely used in family, factory building, office space, road, engineering construction building site etc. because it belongs to the new-generation energy-saving product of no filament, high light efficiency, Gao Guangtong, long-life, high power factor.But circuit, coil, fluorescent tube all split, volume is bigger, extensive use is subjected to certain restriction, therefore, designs at first one of target that a kind of compactness, small-sized, circuit, coil, the three-in-one electromagnetic induction lamp of fluorescent tube become many technical staff and manufacturer.
In 1991, the electrodeless lamp of Everlight has been invented by MAT, the GE of in 1994 U.S. produces the Genura lamp, the PHILIPS Co. of in 1997 Holland is developed into the electrodeless lamp of QL, and their principle all is to utilize electromagnetic induction to convert electric energy to magnetic energy, converts luminous energy to by magnetic energy again and luminous, therefore they all belong to electromagnetic induction lamp, their profile and structure are also roughly the same, and the Genura lamp of producing with U.S. GE is that it comprises shown in the example (as Fig. 1):
Lamp holder 1 can be connected in lamp socket;
Electromagnetic inductive lamp circuit is placed in the cavity of shell 2;
In the glass chamber 8 that installs coil, be fixed on the shell 2, stretch into the inside of fluorescent tube 10, an end has a steam vent 7;
Conducting glass material 9 connects fluorescent tube 10 and radio-frequency generator RF grounded part;
Fluorescent coating 4 covers the inboard of fluorescent tube 10, the outside in glass chamber 8 and the part that fluorescent tube 10 links to each other with conducting glass material 9;
Titanium dioxide reflectance coating 3 covers the outside in glass chamber 8 and the part that fluorescent tube 10 links to each other with conducting glass material 9;
During the work of this kind lamp, after the energising, the coil that is placed in the glass chamber 8 will produce magnetic field, gas ionization discharge in the field drives fluorescent tube, produce light,, also realized miniaturization although this type of light fixture has been equipped with the advantage of electrodeless lamp, can directly replace incandescent lamp, but its weak point is complex structure, and cost is higher, and especially its operating frequency is up to the 1000KHz level, be difficult to the test of the EMC standard of penetrating by conduction interference and electromagnetism Radiation, range of application is restricted.
Summary of the invention
The purpose of this utility model provides more practical electromagnetic induction lamp a kind of compact, can light modulation, and its overall structure is simple, is easy to make.And operating frequency cooperates effective screening arrangement about 250KHz, can make whole lamp not only have the advantage of miniaturization, and can test by EMC smoothly.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of by fluorescent tube; the compact light modulation electromagnetic induction lamp that coil and control circuit are combined into, it comprises: lamp holder 201; shell 202; circuit radome 203; insulating paper 204; radome base plate 205; lampshade 206; dividing plate 207; magnet ring support 208; magnet ring radome 211; coil 209; magnet ring 210; fluorescent tube 212; anti-emi filter 501 in lamp cover 213 and the control circuit; bridge rectifier 502; active power factor corrector 503; closed loop light adjusting controller 504; semi-bridge inversion oscillating circuit module 505; central processing unit 506; power take off 507; electromagnetic inductor 508; dim signal compensator 509; compositions such as start-up control device 510 and protective circuit 511.Wherein: (see figure 2)
Lamp holder 201 connects lamp socket;
Shell 202 is connected with lamp holder 201, has various difform holes on the shell 202, in a cavity is arranged, put the electromagnetic induction lamp control circuit of circuit radome 203, be placed in the cavity of shell 202; Described shell 202 can be circular, also can be polygonal;
Lampshade 206 is connected with shell 202, has various difform holes on the lampshade 206, plays thermolysis; Described lampshade 206 can be circular, also can be polygon; Described lampshade 206 can only cover dividing plate 207, also can infinitely extend, until covering whole fluorescent tube 212;
Dividing plate 207 is connected in the lampshade 206, stops the influence of fluorescent tube 212 heats to electrical equipment; Described dividing plate 207 can be circular, also can be polygon;
Lamp cover 213 connects lampshade 206, and fluorescent tube 212 is sealed in the lampshade 206; Described lamp cover 213 can be circular, also can be polygon; Described lamp cover 213 can be whole, also can be netted;
Control circuit radome 203; Described control circuit radome 203 can be circular, also can be polygon; Each face of described control circuit radome 203 can be whole, also can be netted;
Insulating paper 204, pad be in the above control circuit and below be between the radome base plate 205, guarantee the insulation of control circuit;
Radome base plate 205 cooperates with radome 203, and the control circuit that wraps in is wherein shielded fully;
Coil 209 on magnet ring 210, and links to each other with the electromagnetic induction lamp control circuit, provides magnetic field to light electromagnetic induction lamp;
Magnet ring 210 ringwise, is wound with coil 209 on the magnet ring 210;
Magnet ring radome 211 covers on outside the magnet ring 210 that is wound with coil 209; Each face of described magnet ring radome 211 can be whole, also can be netted;
Magnet ring support 208, the magnet ring 210 that is covered with magnet ring radome 211 is placed on the magnet ring support 208, and magnet ring support 208 is fixed on lampshade 207 and the dividing plate 206;
The inwall (see figure 4) of fluorescent tube 212 scribbles phosphor powder layer 401, the chamber of fluorescent tube 402 contain gas 404 and amalgam 403 (; Fluorescent tube 412 shapes can be circular, also can be closed polygon, and the different cross section of closed polygon has different sectional areas, and described magnet ring support 208 is enclosed within on the described fluorescent tube 212, surrounds a certain cross section of described fluorescent tube 212;
Magnet ring 410 is enclosed within on the fluorescent tube 412;
The control circuit of described compact light modulation electromagnetic induction lamp comprises: (see figure 5)
Anti-emi filter 501 links to each other with AC power, behind the input current, through its inner secondary common mode and the filtering of one-level differential mode, can disturb high order harmonic component and suppress, thereby reduce serious electromagnetic interference phenomenon between electrical network and this circuit greatly, to reach the national standard that conductibility is disturbed;
Bridge rectifier module 502 links to each other with described anti-emi filter 501, carries out starting power supply for follow-up circuit especially semi-bridge inversion oscillation power module 505 provides direct current supply after the rectification;
Active power factor corrector 503, link to each other with described bridge rectifier module 502, its inside includes the voltage automatic calibration circuit, also comprise an electrochemical capacitor, can be used as the power supply of subsequent conditioning circuit after this electric capacity charging, active power factor corrector 503 can be cut down the top pulse of electrochemical capacitor charging, and the ripple amplitude of reduction direct voltage, the circuit reactive power is fallen at the end greatly, improve circuit active power, the output power factor of circuit is reached more than 0.99, constant voltage of active power factor corrector 503 outputs, cause has automatic alignment function, thereby load is no longer changed because of the fluctuation of line voltage.Simultaneously, this electrochemical capacitor provides the secondary filtering effect again;
Closed loop light adjusting controller 504 links to each other with active power factor corrector 503, and closed loop light adjusting controller 504 provides the light modulation operating voltage for central processing unit 506;
Semi-bridge inversion oscillating circuit module 505 links to each other with closed loop light adjusting controller 504, for subsequent conditioning circuit provides operating voltage;
Central processing unit 506 links to each other with semi-bridge inversion oscillating circuit module 505, the work of control entire circuit;
Power take off 507 links to each other with described central processing unit 506 with described semi-bridge inversion oscillation power module 505;
Electromagnetic inductor 508 links to each other with start-up control device 510 with power take off 507, and the output of electromagnetic inductor 508 connects electromagnetic induction lamp;
Dim signal compensator 509 links to each other with central processing unit 506 with closed loop light adjusting controller 504, and the light modulation compensation is provided;
Start-up control device 510 links to each other with AC power, carries out the start-up control of electromagnetic induction lamp;
Protective circuit 511 links to each other with central processing unit 506 with power take off 507, detects output signal and feeds back to central processing unit 506.
Certainly, can not have closed loop light adjusting controller 504 and dim signal compensator 509 in the control circuit, this control circuit does not just possess dimming function so yet.
Owing to adopted technique scheme, the light modulation electromagnetic induction lamp with three-dimensional contouring fluorescent tube of the present utility model can adapt to the narrow and small occasion in various spaces; And its fluorescent tube and circuit separate, to reduce its use cost; Owing to adopted the control circuit with dimming function, this electromagnetic induction lamp also has dimming function.Simultaneously, the utility model is again a kind of electromagnetic induction lamp of compact, have simple in structure, be easy to make, and operating frequency is at 200～300KHz, cooperate effective screening arrangement, can make whole lamp not only have the advantage of miniaturization, also have safety, reliable, practical, energy-conservation characteristics, the test of the EMC that can penetrate by conducted interference and electromagnetism state Radiation.Prospect with extensive use.
Description of drawings
The structural representation of the electromagnetic induction lamp of Fig. 1, a kind of prior art;
An example structure figure of Fig. 2, the utility model (a kind of compact light modulation electromagnetic induction lamp);
Another example structure figure of Fig. 3, the utility model (a kind of compact light modulation electromagnetic induction lamp);
Fig. 4, the utility model (a kind of electromagnetic induction lamp of compact) lamp tube structure figure;
The control circuit block diagram of an embodiment of Fig. 5, the utility model (a kind of compact light modulation electromagnetic induction lamp);
The control circuit circuit diagram of an embodiment of Fig. 6, the utility model (a kind of compact light modulation electromagnetic induction lamp).The meaning that each mark is expressed as follows respectively in each accompanying drawing: 1----lamp holder; The 2----shell; 3----titanium dioxide Titanium reflectance coating; The 4----fluorescent coating; The 5----conductive coating; 6----krypton gas and amalgam; The 7----steam vent; 8----glass chamber; The 9----conducting glass material; The 10----fluorescent tube; The 201----lamp holder; The 202----shell; 203----circuit radome; The 204----insulating paper; 205----radome base plate; The 206----dividing plate; The 207----lampshade; 208----magnet ring support; The 209----coil; The 210----magnet ring; 211----magnet ring radome; The 212----fluorescent tube; The 213----lamp cover; The 301----lamp holder; The 302----shell; 313----circuit radome; The 304----insulating paper; 305----radome base plate; The 306----lampshade; The 307----dividing plate; The 308----reflection shield; 309----magnet ring support; 310----magnet ring radome; The 311----coil; The 312----magnet ring; The 313-----fluorescent tube; The 401----phosphor powder layer; The 402----fluorescent tube; The 403----amalgam; 404----krypton gas; The 501----anti-emi filter; 502----bridge rectifier module; The 503--active power factor corrector; 504----closed loop light adjusting controller; 505----semi-bridge inversion oscillating circuit module; The 506----central processing unit; The 507----power take off; The 508----electromagnetic inductor; 509----dim signal compensator; 510----start-up control device; The 511----protective circuit.
Embodiment
Further specify the technical solution of the utility model below in conjunction with embodiment and accompanying drawing.
Maximum characteristics of the present utility model are to have adopted special structure to make electromagnetic induction lamp become the light modulation electromagnetic induction lamp of compact, and Fig. 2 is an embodiment of the present utility model.As shown in Figure 2, among this embodiment, lamp holder 201 is enclosed within the top of shell 202.Have various difform holes on the shell 202, in a cavity is arranged.Lampshade 207 is connected with shell 202, has various difform holes on the lampshade 207.Dividing plate 206 is connected in the lampshade 207.Electromagnetic induction lamp control circuit overcoat has circuit radome 204, is placed in the cavity of shell 202.Be lined with insulating paper 204 under the control circuit, insulating paper cushions radome base plate 205 204 times.Be wound with coil 209 on the magnet ring 210, coil 209 links to each other with the electromagnetic induction lamp control circuit.Be wound with outside the magnet ring 210 of coil 209, be covered with magnet ring radome 211.The magnet ring 210 that is covered with radome 211 is placed on the magnet ring support 208, and magnet ring support 208 is fixed on lampshade 207 and the dividing plate 206.
Fluorescent tube 402, as shown in Figure 4, the inwall of fluorescent tube 402 scribbles phosphor powder layer 401, and the chamber of fluorescent tube contains gas 404 and amalgam 403; It is closed polygonal that lamp tube shapes can be; Magnet ring is enclosed within on the fluorescent tube;
Fig. 3 is another embodiment of the present utility model.As shown in Figure 3, among this embodiment, lamp holder 301 is enclosed within the top of shell 302.Have various difform holes on the shell 302, in a cavity is arranged.Lampshade 306 is connected with shell 302, has various difform holes on the lampshade 306, and lampshade 306 covered whole fluorescent tube 313, and dividing plate 307 is connected in the lampshade 306.Reflection shield 308 is connected on the dividing plate 307, and electromagnetic induction lamp control circuit overcoat has circuit radome 303, is placed in the cavity of shell 302.Be lined with insulating paper 304 under the control circuit, insulating paper cushions radome base plate 305 304 times.Be wound with coil 311 on the magnet ring 312, coil 311 links to each other with the electromagnetic induction lamp control circuit.Be wound with outside the magnet ring 312 of coil 311, be covered with magnet ring radome 310.The magnet ring 312 that is covered with radome 310 is placed on the magnet ring support 309, and magnet ring support 309 is fixed on lampshade 306 and the dividing plate 307.
A same embodiment of the structure of fluorescent tube;
Fig. 5 is an embodiment circuit structure block diagram of light modulation electromagnetic induction lamp control circuit of the present utility model.
Fig. 6 is the circuit diagram of Fig. 5, further specifies closed loop light adjusting controller 404, semi-bridge inversion oscillating circuit module 405, central processing unit 406, power take off 407, dim signal compensator 409, start-up control device 410, electromagnetic inductor 408 and protective circuit 411.As shown in Figure 6, among this embodiment, central processing unit is the HY4501 chip, and HY4501 is an electric ballast application-specific integrated circuit (ASIC) that integrates light modulation, driving, protective circuit, and dimming scope is at 20%-100%.
R2, R3 have constituted the closed loop light adjusting controller among this embodiment, and potentiometer R1 is the dim signal compensator, and R1 links to each other with R2, R3, and its sliding end is connected to the pin 3 of central processing unit HY4501, and dim signal is provided.
The semi-bridge inversion oscillating circuit module of this embodiment comprises two inversion pipes, the first inversion pipe is metal-oxide-semiconductor Q70, be connected to the 9th pin of HY4501 chip by resistance R 31, the second inversion pipe is metal-oxide-semiconductor Q80, be connected to the 11st pin of HY4501 chip by resistance R 25, as can be seen from Fig. 6, the grid of Q70 and Q80 links to each other with Q6 with triode Q7 with D11 by diode D21 respectively, triode Q7 and Q6 have constituted the auxiliary switching circuit of this semi-bridge inversion oscillating circuit module, owing to increased this two triodes, can effectively shorten the switching time of circuit, when operating frequency was the 300KHz left and right sides, the high-frequency loss of metal-oxide-semiconductor had clear improvement.Resistance R 24 among Fig. 6, R26, R27, R82, R83, diode D13, D91 and capacitor C 53 are the auxiliary element in the semi-bridge inversion oscillating circuit module.
The power take off of this embodiment is an inductance L 4, is connected to the drain electrode of source electrode and the metal-oxide-semiconductor Q80 of metal-oxide-semiconductor Q70, the power output when providing work for subsequent conditioning circuit.
The electromagnetic inductor of this embodiment is magnet ring LN1 and LN2, and magnet ring is enclosed within on the fluorescent tube of electromagnetic induction lamp, surrounds a certain cross section of fluorescent tube, is wound with coil on magnet ring LN1 and the LN2, is respectively odd number circle and even number circle, with as the N utmost point and the S utmost point.
The start-up control device of this embodiment is a capacitor C 41, one end links to each other with AC power, the other end links to each other with electromagnetic inductor, provides starting resistor for electromagnetic inductor when electromagnetic induction lamp starts, and electromagnetic inductor provides operating voltage by semi-bridge inversion oscillating circuit module after the operate as normal.
The protective circuit of this embodiment comprises metal-oxide-semiconductor Q9; triode Q8; resistance R 28, R29, R36, R42, R81; capacitor C 40, C42, C51 and diode D90; from the power take off sampled output signal, and feed back to the 2nd pin of HY4501 by capacitor C 42, if output signal generation overvoltage or when entering capacitive mode; the work of HY4501 meeting halt circuit is with protective circuit.
Operation principle of the present utility model is: control circuit generation high-frequency current flows to the coil on the magnet ring, magnet ring produces higher magnetic flux density, form alternating magnetic field, this alternating magnetic field with couple electrical energy in fluorescent tube, form voltage, cause gas and amalgam ionization in the chamber, the mercury atom of ionization is launched ultraviolet ray and is hit fluorescent material, so fluorescent tube is just luminous.
Important technological parameters of the present utility model is as follows:
Light efficiency＞80Lm/W.
Operating frequency＞200KHz.
Power factor＞0.99.
Life-span＞100000 hour.
Subzero 40 ℃ can start.
Harmonic content＜8%.
Claims (18)
1; a kind of by fluorescent tube; the compact light modulation electromagnetic induction lamp that coil and control circuit are combined into is characterized in that it comprises: lamp holder [201]; shell [202]; circuit radome [203]; insulating paper [204]; radome base plate [205]; lampshade [206]; dividing plate [207]; magnet ring support [208]; magnet ring radome [211]; coil [209]; magnet ring [210]; fluorescent tube [212]; anti-emi filter [501] in lamp cover [213] and the control circuit; bridge rectifier [502]; active power factor corrector [503]; closed loop light adjusting controller [504]; semi-bridge inversion oscillating circuit module [505]; central processing unit [506]; power take off [507]; electromagnetic inductor [508]; dim signal compensator [509]; start-up control device [510] and protective circuit compositions such as [511].Wherein:
Lamp holder [201] connects lamp socket;
Shell [202] is connected with lamp holder [201], has various difform holes on the shell [202], in a cavity is arranged, put the electromagnetism one sense light control circuit of circuit radome [203], be placed in the cavity of shell [202];
Lampshade [206] is connected with shell [202], has various difform holes on the lampshade [206];
Dividing plate [207] is connected in the lampshade [206];
Lamp cover [213] connects lampshade [206], and fluorescent tube [212] is sealed in the lampshade [206];
Insulating paper [204], the pad be in the above control circuit and below be between the radome base plate [205];
Radome base plate [205] cooperates with radome [203], and control circuit is wrapped in the middle of it;
Coil [209] on magnet ring [210], and links to each other with the electromagnetic induction lamp control circuit;
Magnet ring [210] ringwise, is wound with coil [209] on the magnet ring [210];
Magnet ring radome [211] covers on outside the magnet ring [210] that is wound with coil [209];
Magnet ring support [208], the magnet ring [210] that is covered with magnet ring radome [211] is placed on the magnet ring support [208], and magnet ring support [208] is fixed on lampshade [207] and the dividing plate [206];
The inwall of fluorescent tube [212] scribbles phosphor powder layer [401], and the chamber of fluorescent tube [402] contains gas [404] and amalgam [403]; Magnet ring [410] is enclosed within on the fluorescent tube [412];
Anti-emi filter [501] links to each other with AC power;
Bridge rectifier module [502] links to each other with described anti-emi filter [501];
Active power factor corrector [503] links to each other with described bridge rectifier module [502], and its inside includes the voltage automatic calibration circuit, also comprises an electrochemical capacitor;
Closed loop light adjusting controller [504] links to each other with active power factor corrector [503];
Semi-bridge inversion oscillating circuit module [505] links to each other with closed loop light adjusting controller [504];
Central processing unit [506] links to each other with semi-bridge inversion oscillating circuit module [505];
Power take off [507] links to each other with described central processing unit [506] with described semi-bridge inversion oscillation power module [505];
Electromagnetic inductor [508] links to each other with start-up control device [510] with power take off [507], and the output of electromagnetic inductor [508] connects electromagnetic induction lamp;
Dim signal compensator [509] links to each other with central processing unit [506] with closed loop light adjusting controller [504];
Start-up control device [510] links to each other with AC power;
Protective circuit [511] links to each other with central processing unit [506] with power take off [507].
2, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described shell [202] can be circular, also can be polygonal.
3, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described lampshade [206] can cover dividing plate [207], also can infinitely extend, until covering whole fluorescent tube [212].
4, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described dividing plate [207] can be circular, also can be polygon.
5, will require 1 described compact light modulation electromagnetic induction lamp according to right, it is characterized in that described lamp cover [213] can be circular, also can be polygon; Can be whole, also can be netted.
6, asking 1 described compact light modulation electromagnetic induction lamp according to right, it is characterized in that described control circuit radome [203] can be circular, also can be polygon; Each face can be whole, also can be netted.
7, compact light modulation electromagnetic induction lamp according to claim 1, each face that it is characterized in that described magnet ring radome [211] can be whole, also can be netted.
8, compact light modulation electromagnetic induction lamp according to claim 1, it is characterized in that described fluorescent tube [212] can be circular, it also can be closed polygon, the different cross section of closed polygon has different sectional areas, described magnet ring support [208] is enclosed within on the described fluorescent tube [212], surrounds the one cross section of described fluorescent tube [212].
9, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described central processing unit [506] is a HY4501 chip.
10, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described semi-bridge inversion oscillating circuit module, may further include: (a) first inverter; (b) second inverter; (c) auxiliary switching circuit.
11, compact light modulation electromagnetic induction lamp according to claim 9 is characterized in that described first inverter is a metal-oxide-semiconductor [Q70], is connected to the 9th pin of HY4501 chip by resistance [R31].
12, compact light modulation electromagnetic induction lamp according to claim 9 is characterized in that described second inverter is a metal-oxide-semiconductor [Q80], is connected to the 11st pin of HY4501 chip by resistance [R25].
13, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described power take off [507] is an inductance [L4], is connected to the drain electrode of the source electrode and the metal-oxide-semiconductor [Q80] of metal-oxide-semiconductor [Q70].
14, compact light modulation electromagnetic induction lamp according to claim 1, it is characterized in that described electromagnetic inductor [508] is two and half camber magnet ring LN1 and LN2, fluorescent tube [212] is clipped in the middle, be wound with coil on the magnet ring, be respectively odd number circle and even number circle, respectively as the N utmost point and the S utmost point.
15, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described start-up control device [510] is an electric capacity [C41], and an end links to each other with AC power, and the other end links to each other with electromagnetic inductor [508].
16, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described protective circuit [511] comprises a triode and a metal-oxide-semiconductor.
17, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described closed loop light adjusting controller [504] is the resistance of two series connection, and its movable end is connected on the pin 3 of central processing unit [506] HY4501.
18, compact light modulation electromagnetic induction lamp according to claim 1 is characterized in that described dim signal compensator [509] is a potentiometer [R1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420019654 CN2689649Y (en) | 2004-01-18 | 2004-01-18 | Compact light-adjustable electromagnetic inducing lights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420019654 CN2689649Y (en) | 2004-01-18 | 2004-01-18 | Compact light-adjustable electromagnetic inducing lights |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689649Y true CN2689649Y (en) | 2005-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420019654 Expired - Lifetime CN2689649Y (en) | 2004-01-18 | 2004-01-18 | Compact light-adjustable electromagnetic inducing lights |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689649Y (en) |
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2004
- 2004-01-18 CN CN 200420019654 patent/CN2689649Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090610 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |