CN201421832Y - High-frequency coupling lamp - Google Patents
High-frequency coupling lamp Download PDFInfo
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- CN201421832Y CN201421832Y CN2009201599630U CN200920159963U CN201421832Y CN 201421832 Y CN201421832 Y CN 201421832Y CN 2009201599630 U CN2009201599630 U CN 2009201599630U CN 200920159963 U CN200920159963 U CN 200920159963U CN 201421832 Y CN201421832 Y CN 201421832Y
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- frequency power
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- high frequency
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Abstract
A high-frequency coupling lamp comprises a first filter circuit, a rectification circuit, a power factor correcting circuit, a synchronous control circuit, a power coupling circuit, a first high-frequency power generating circuit and a second high-frequency power generating circuit, wherein the first filter circuit, the rectification circuit and the power factor correcting circuit are electricallyconnected in series in turn, the voltage input ends of the first high-frequency power generating circuit and the second high-frequency power generating circuit are respectively and electrically connected with the synchronous control circuit, the voltage output ends of the first and the second high-frequency power generating circuits are respectively and electrically connected with the power coupling circuit. The high-frequency coupling lamp avoids the problems of the temperature rise of a pulse width modulation module of the high-frequency generating circuit, the temperature rise of a junction electric field effect transistor of a power switching tube and the easy aging of the junction electric field effect transistor under high-temperature, and keeps the service life of the high-frequency coupling lamp.
Description
Technical field
The utility model belongs to the lighting fixture field, relates in particular to a kind of electromagnetic coupled and gas discharge principle utilized and carries out luminous high-frequency coupling lamp.
Background technology
The high-frequency coupling lamp is behind input supply voltage, utilize signal generating circuit to produce high frequency constant voltage signal and give the power coupling circuit, in the discharge space of lamp housing, set up the static high-intensity magnetic field by the power coupling circuit, utilize the power coupling circuit that the high-frequency electromagnetic field energy is coupled in the bulb with induction mode, make the gas avalanche ionization in the bulb form plasma, plasma be stimulated atom when returning ground state spontaneous radiation go out ultraviolet ray, bulb inner wall fluorescent material is subjected to ultraviolet ray excited and sends visible light.
But, when existing high-frequency coupling lamp is worked under the condition of high temperature, the pulse width modulation module temperature of high frequency generation circuit raises, the junction type field of electric force effect transistor temperature of power switch pipe promotes, junction type field of electric force effect transistor is aging easily under high-temperature condition, influence the performance and the life-span of high-frequency coupling lamp, failure rate is higher, can't effectively guarantee the normal useful life of high-frequency coupling lamp.
The utility model content
Technical problem to be solved in the utility model provides a kind of high-frequency coupling lamp, can prevent that junction type field of electric force effect transistor is aging easily under high-temperature condition, influences the problem of the performance of high-frequency coupling lamp.
In order to address the above problem, the utility model is taked following technical scheme: a kind of high-frequency coupling lamp, comprise: first filter circuit, rectification circuit, circuit of power factor correction, synchronization control circuit, the first high frequency power generation circuit and the second power generation circuit, the voltage input end of described first filter circuit is electrically connected with power supply, the voltage input end of described rectification circuit is electrically connected with the voltage output end of described first filter circuit, the voltage input end of described circuit of power factor correction is electrically connected with the voltage output end of described rectification circuit, the voltage input end of described synchronization control circuit is electrically connected with the voltage output end of described circuit of power factor correction, the voltage output end of described synchronization control circuit is electrically connected the voltage input end of the described first high frequency power generation circuit and the second power generation circuit respectively, the described first high frequency power generation circuit is connected with the power coupling circuit with the second high frequency power generation circuit, and wherein the first high frequency power generation circuit and the second power generation circuit are connected in parallel.
Preferred version: described synchronization control circuit is provided with two groups of voltage outputs.
Preferred version, described high-frequency coupling lamp also comprises: second filter circuit and the 3rd filter circuit, the voltage input end of described second filter circuit is electrically connected with the first high frequency power generation circuit voltage output; The voltage input end of described the 3rd filter circuit is electrically connected with the second high frequency power generation circuit voltage output.
The utility model high-frequency coupling lamp is on the basis of original first power generation circuit, improve circuit connection structure, the synchronization control circuit and the second high frequency power generation circuit have been increased, two circuits that the synchronization control circuit Synchronization Control is identical insert two cover high frequency power generation circuit, avoided the pulse width modulation module temperature of high frequency generation circuit to raise, the junction type field of electric force effect transistor temperature of power switch pipe promotes, the problem that junction type field of electric force effect transistor wears out under high-temperature condition easily, the useful life that has kept the high-frequency coupling lamp.
Description of drawings
Fig. 1 is the principle of luminosity structured flowchart of the utility model high-frequency coupling lamp;
Fig. 2 is Fig. 1 preferred embodiment theory structure block diagram.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model high-frequency coupling lamp comprises: first filter circuit 11, rectification circuit 12, circuit of power factor correction 13, synchronization control circuit 14, the first high frequency power generation circuit 15 and the second high frequency power generation circuit 16, the voltage input end of described first filter circuit 11 is electrically connected with power supply, the voltage input end of described rectification circuit 12 is electrically connected with the voltage output end of described first filter circuit 11, the voltage input end of described circuit of power factor correction 13 is electrically connected with the voltage output end of described rectification circuit 12, the voltage input end of described synchronization control circuit 14 is electrically connected with the voltage output end of described circuit of power factor correction 13, the voltage output end of described synchronization control circuit 14 is electrically connected the voltage input end of the described first high frequency power generation circuit 15 and the second power generation circuit 16 respectively, the output of the described first high frequency power generation circuit 15 and the second high frequency power generation circuit 16 is electrically connected with power coupling circuit 17, and wherein the first high frequency power generation circuit 15 and the second power generation circuit 16 are connected in parallel.
As depicted in figs. 1 and 2, the high-frequency coupling lamp is incoming transport when work, the two-stage type filter circuit 11 that alternating voltage inputs to inductance and electric capacity composition carries out filtering, be input to rectification circuit 12 after the filtering, alternating current press-fited be changed to direct voltage, direct voltage is input to circuit of power factor correction 13 and boosts, voltage stabilizing and direct voltage is converted to alternating voltage, alternating voltage after the voltage stabilizing is input to synchronization control circuit 14, two circuits that synchronization control circuit 14 Synchronization Control are identical insert the first high frequency power generation circuit 15 and the second power generation circuit 16, article two, circuit is worked simultaneously, amplify the back through push-pull circuit respectively and realize the PWM pulse-width modulation, produce high frequency ac signal, send to coupler then, coupler is set up the static high-intensity magnetic field in the discharge space of glass cell-shell, atmosphere in the discharge space is carried out ionization, and produce strong ultraviolet light, the three primary colors fluorescent powder of glass inner wall is subjected to strong uv light induction to send visible light.Wherein the model of the power factor control circuit 13 of the utility model employing is MC33262, and the model of synchronization control circuit 14 is APW7108, and rectification circuit 12 is a bridge rectifier.For better filtering interfering waveform, can also increase by second filter circuit 18 and the 3rd filter circuits 19 at the first high frequency power generation circuit 15 and the first high frequency power generation circuit, 16 backs.
The utility model high-frequency coupling lamp is on the basis of original first power generation circuit, improve circuit connection structure, the synchronization control circuit and the second high frequency power generation circuit have been increased, two circuits that the synchronization control circuit Synchronization Control is identical insert two cover high frequency power generation circuit, avoided the pulse width modulation module temperature of high frequency generation circuit to raise, the junction type field of electric force effect transistor temperature of power switch pipe promotes, the problem that junction type field of electric force effect transistor wears out under high-temperature condition easily, the useful life that has kept the high-frequency coupling lamp.
Claims (3)
1, a kind of high-frequency coupling lamp, it is characterized in that, comprise: first filter circuit, rectification circuit, circuit of power factor correction, synchronization control circuit, the power coupling circuit, the first high frequency power generation circuit and the second high frequency power generation circuit, the voltage input end of described first filter circuit is electrically connected with power supply, the voltage input end of described rectification circuit is electrically connected with the voltage output end of described first filter circuit, the voltage input end of described circuit of power factor correction is electrically connected with the voltage output end of described rectification circuit, the voltage input end of described synchronization control circuit is electrically connected with the voltage output end of described circuit of power factor correction, the voltage output end of described synchronization control circuit is electrically connected the voltage input end of the described first high frequency power generation circuit and the second high frequency power generation circuit respectively, the described first high frequency power generation circuit is connected with the power coupling circuit with the second high frequency power generation circuit, and wherein the first high frequency power generation circuit and the second high frequency power generation circuit are connected in parallel.
According to the described a kind of high-frequency coupling lamp of claim 1, it is characterized in that 2, described synchronization control circuit is provided with two groups of voltage outputs.
3, according to the described a kind of high-frequency coupling lamp of claim 1, it is characterized in that, also comprise: second filter circuit and the 3rd filter circuit, the voltage input end of described second filter circuit is electrically connected with the first high frequency power generation circuit voltage output; The voltage input end of described the 3rd filter circuit is electrically connected with the second high frequency power generation circuit voltage output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201599630U CN201421832Y (en) | 2009-06-16 | 2009-06-16 | High-frequency coupling lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201599630U CN201421832Y (en) | 2009-06-16 | 2009-06-16 | High-frequency coupling lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421832Y true CN201421832Y (en) | 2010-03-10 |
Family
ID=41808493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201599630U Expired - Fee Related CN201421832Y (en) | 2009-06-16 | 2009-06-16 | High-frequency coupling lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421832Y (en) |
-
2009
- 2009-06-16 CN CN2009201599630U patent/CN201421832Y/en not_active Expired - Fee Related
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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: 20100310 Termination date: 20120616 |