CN2779794Y - Gas-discharge lamp ballast - Google Patents
Gas-discharge lamp ballast Download PDFInfo
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- CN2779794Y CN2779794Y CN 200520055409 CN200520055409U CN2779794Y CN 2779794 Y CN2779794 Y CN 2779794Y CN 200520055409 CN200520055409 CN 200520055409 CN 200520055409 U CN200520055409 U CN 200520055409U CN 2779794 Y CN2779794 Y CN 2779794Y
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Abstract
The utility model discloses a gas discharge lamp ballast. The utility model aims to solve the technical problems of raising the starting efficiency of a gas discharge lamp and reducing the volume of the gas discharge lamp ballast. The utility model comprises a switching circuit and an ignition output circuit which are sequentially connected with a power supply, wherein one end of a main coil of a primary coil of a transformer of the switching circuit is connected with the anode of the power supply; the other end of the main coil is connected with the anode of a capacitor and grounded through a switching pipe, the cathode of the capacitor is grounded through an auxiliary coil, and a triggering electrode of the switching pipe is connected with the output end of a switching power supply controller; the feedback signal input end of the switching power supply controller is connected with one end of a secondary coil of the transformer of the switching circuit through a voltage division resistor. When the switching pipe is switched on by switching signals, energy stored in the capacitor is transmitted to the secondary coil through the auxiliary coil; simultaneously, the main coil transmits the energy to the secondary coil, and the secondary coil outputs a starting and service voltage of a high-intensity gas discharge lamp so that the gas discharge lamp is easily started.
Description
Technical field
The utility model relates to a kind of direct current supply portable gas ballast for discharge lamp, particularly a kind of flashlight and hand lamp direct current supply portable gas ballast for discharge lamp.
Background technology
The high brightness of gaseous discharge lamp and energy-conservationly make it obtain widely using, the gas discharge lamp ballast of prior art since the components and parts that adopted exist to be difficult for starting gaseous discharge lamp and the big deficiency of ballast volume.
Summary of the invention
The purpose of this utility model provides a kind of gas discharge lamp ballast, and the technical problem that solve is to improve the starting efficiency of gaseous discharge lamp, reduces the volume of gas discharge lamp ballast.
The utility model is by the following technical solutions: a kind of gas discharge lamp ballast, comprise the switching circuit and the igniting output circuit that are linked in sequence with power supply, the transformer of described switching circuit is provided with main coil and more than one ancillary coil, one termination power positive pole of main coil, the positive pole of another termination capacitor, simultaneously through switching tube ground connection, the negative pole of electric capacity is through ancillary coil ground connection, the trigger electrode of switching tube connects the output of switch power controller, and the feedback signal input of switch power controller is connected with transformer secondary output coil one end of switching circuit by divider resistance.
The transformer of switching circuit of the present utility model has two, a termination power positive pole of first coil, and the positive pole of another termination second electric capacity, the negative pole of second electric capacity is through the second coil ground connection.
Switching tube of the present utility model is first field effect transistor, and source electrode connects the other end of first coil, and grounded drain, grid connect the output of switch power controller through first resistance; The feedback signal input termination of switch power controller is serially connected in transformer secondary output coil one end and the 3rd resistance between the ground connection and the dividing point of the 5th resistance of switching circuit.
First coil, one end of the transformer of the utility model igniting output circuit connects logically through switching discharge tube, and another termination the 7th electric capacity one end connects transformer secondary output coil one end of switching circuit simultaneously through the 6th resistance, and another termination of the 7th electric capacity logically; Transformer secondary output coil one end of switching circuit also connects logically through second coil, the gaseous discharge lamp of transformer of igniting output circuit.
The negative pole of another termination first diode of the transformer secondary output coil of the utility model switching circuit, the plus earth of first diode, the negative pole of first diode and ground connection two ends are parallel with the 4th resistance and the 5th electric capacity that is in series.
Be parallel with the tenth resistance and the 6th electric capacity that is in series between transformer secondary output coil one end of the utility model switching circuit and the gaseous discharge lamp; Be parallel with the 3rd electric capacity and second resistance that is in series between the source electrode of first field effect transistor and the drain electrode.
The utility model is stated between transformer secondary output coil one end of switching circuit and the ground connection and is serially connected with the 4th electric capacity; Ground connection and logically between be serially connected with the 9th resistance; Be serially connected with first electric capacity between input positive source and the ground connection.
The utility model input power cathode connects the source electrode of second field effect transistor, and the grounded drain of second field effect transistor connects the grid of second field effect transistor with the dividing point of the 7th resistance of connecting between positive source and the ground connection and the 8th resistance.
Second field effect transistor of the present utility model is selected S19926 for use, first field effect transistor is selected IRF3710 for use, first electric capacity is selected 330 μ/25V for use, the 8th resistance is selected 1K for use, the 7th resistance is selected 100K for use, the transformer of switching circuit is selected EFD-20 for use, EFD-25, RM6, RM8 or RM10 magnetic core, second electric capacity is selected 330 μ/50V for use, and the 3rd electric capacity is selected 1000P for use, and second resistance is selected 18 Ω for use, first diode is selected MUR860 for use, the 4th resistance is selected 330 Ω for use, and the 5th electric capacity is selected 150P for use, and the 4th electric capacity is selected 0.1 μ for use, the 6th electric capacity is selected 4.7 μ/400V for use, the tenth resistance is selected 330 Ω for use, and the 6th resistance is selected 100K for use, and the 7th electric capacity selects 0.1 for use, 0.22,0.33 or 0.47 μ, switching discharge tube is selected 300V for use, and the transformer of igniting output circuit is selected EFD-15 or EE-19 magnetic core for use.
The utility model compared with prior art, the transformer of switching circuit is provided with main coil and more than one ancillary coil, one termination power positive pole of main coil, the positive pole of another termination capacitor and switching tube, the negative pole of electric capacity is through ancillary coil ground connection, when switching signal is opened switching tube, the energy that is stored in electric capacity transmits to secondary coil by ancillary coil, main coil also transmits energy to secondary coil simultaneously, the starting and the operating voltage of secondary coil output high-intensity gas discharge lamp, the transformer of igniting output circuit is that high-intensity gas discharge lamp produces a plurality of high-voltage pulses when starting, after starting successfully,, become the filter of high voltage direct current owing to the inductance effect of itself.It is when guaranteeing high conversion efficiency, and volume is littler, makes the easier starting of gaseous discharge lamp.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.The transformer of the switching circuit of the utility model gas discharge lamp ballast is provided with main coil and an ancillary coil, also can be more than one ancillary coil.As shown in Figure 1, the input positive source is imported an end from the transformer B1 first coil T1 of first pin connection switching circuit of power interface J1, and first capacitor C 1 that connects between input power supply and ground wire is in order to reduce the internal resistance of input power supply.And the negative pole of input power supply is connected to the source electrode of the second field effect transistor Q2, the grounded drain of Q2, connect the grid of second field effect transistor with the dividing point of the 7th resistance R 7 of connecting between positive source and the ground connection and the 8th resistance R 8, provide the input power supply the anti-driving voltage of protecting.When output one end of the transformer B1 first coil T1 of switching circuit is connected to the first field effect transistor Q1 source electrode, also be connected to the positive pole of second capacitor C 2, the negative pole of second capacitor C 2 is the second coil T2 inputs that are connected the transformer B1 of switching circuit, the direct ground connection of drain electrode of the output of the second coil T2 and the first field effect transistor Q1.The 3rd capacitor C 3 and second resistance R 2 are connected between the source electrode of the first field effect transistor Q1 and the drain electrode and form a RC absorption circuit.The secondary coil T3 output of the transformer B1 of switching circuit, its end is connected to the positive pole of the 4th capacitor C 4, the other end is connected to the negative pole of the first diode D1, the first diode D1 and the 4th capacitor C 4 form current rectifying and wave filtering circuit, the direct ground connection of the negative pole of the positive pole of the first diode D1 and the 4th capacitor C 4, the 5th capacitor C 5 and the 4th resistance R 4 are connected on and form a RC absorption circuit between the positive pole of the first diode D1 and the negative pole.The 3rd resistance R 3 and 5 series connection of the 5th resistance R form potential-divider network and are connected between out-put supply positive pole and the ground, and dividing point is delivered to the comparator of Switching Power Supply control integrated circuit.The switching pulse signal of Switching Power Supply is a grid of delivering to the first field effect transistor Q1 by first resistance R 1.Direct voltage after boosting by switching circuit is connected to the second coil T2, one end of the transformer B2 of igniting output circuit from secondary coil T3 one end of the transformer B1 of switching circuit, the second coil T2 other end of the transformer B2 of igniting output circuit is directly connected to the positive pole of gaseous discharge lamp LAMP, the negative pole direct loic ground LGND of gaseous discharge lamp LAMP.Be connected after the tenth resistance R 10 and the series connection of the 6th capacitor C 6 power switch circuit transformer B1 secondary coil T3 one end and logically between the LGND.The first coil T1, one end of the transformer B2 of igniting output circuit is connected the input of switching discharge tube SW1, the other end is connected the tie point between the 7th capacitor C 7 and the 6th resistance R 6, the other end of the 7th capacitor C 7 is connected to logically LGND, the output of switching discharge tube SW1 is connected to logically LGND, forms the loop with the 7th capacitor C 7.And the other end of the 6th resistance R 6 is connected the second coil T2, one end of transformer B2 of igniting output circuit, at ground GND with logically be serially connected with the 9th resistance R 9 between the LGND.
Second field effect transistor of the utility model gas discharge lamp ballast embodiment is selected SI9926 for use, first field effect transistor is selected IRF3710 for use, first electric capacity is selected 330 μ/25V for use, the 8th resistance is selected 1K for use, the 7th resistance is selected 100K for use, the transformer of switching circuit is selected EFD-20 for use, EFD-25, RM6, RM8 or RM10, second electric capacity is selected 330 μ/50V for use, and the 3rd electric capacity is selected 1000P for use, and second resistance is selected 18 Ω for use, first diode is selected MUR860 for use, the 4th resistance is selected 330 Ω for use, and the 5th electric capacity is selected 150P for use, and the 4th electric capacity is selected 0.1 μ for use, the 6th electric capacity is selected 4.7 μ/400V for use, the tenth resistance is selected 330 Ω for use, and the 6th resistance is selected 100K for use, and the 7th electric capacity selects 0.1 for use, 0.22,0.33 or 0.47 μ, switching discharge tube is selected 300V for use, and the transformer of igniting output circuit is selected EFD-15 for use, EE19.
The gas discharge lamp ballast course of work of the present utility model: when the first field effect transistor Q1 is in closed condition after power supply loads, source current charges to second capacitor C 2 by the transformer B1 first coil T1 of switching circuit, because its first coil T1 and the second coil T2 are homophases, at first charge cycle only to 2 chargings of second capacitor C and not to secondary coil T3 transmission of power.When switching signal is opened the first field effect transistor Q1, the energy that is stored in second capacitor C 2 transmits to secondary coil T3 by the second coil T2, the first coil T1 also transmits energy to secondary coil T3 simultaneously, because the internal resistance of second capacitor C 2 is very little, so secondary coil T3 can export the starting voltage up to the high-intensity gas discharge lamp of 500V like a cork.When switching signal is closed the first field effect transistor Q1, offset by second capacitor C 2 from the forward current of power supply and the induced current of the first coil T1 after the polarity inversion and the second coil T2, reduced the crest voltage in the loop.Because the starting voltage of high-intensity gas discharge lamp is up to 500V, and have only 60V to 95V, the second coil T2 of the transformer B1 of second capacitor C 2 and switching circuit that the multiplication of voltage of high pressure institute palpus is provided during work.The tenth resistance R 10 and the 6th capacitor C 6 provide the 500V high pressure to the excessive afterflow between the operating voltage when starting for gaseous discharge lamp.The second coil T2 of the transformer B2 of switching discharge tube SW1 and igniting output circuit forms the high-tension ignition circuit, when from the 500V voltage of the 6th resistance R 6 to 7 chargings of the 7th capacitor C and when reaching the place value of switching discharge tube SW1, switching discharge tube SW1 conducting discharge, the energy that is stored in the 7th capacitor C 7 first coil T1 by the transformer B2 of igniting output circuit discharges to the second coil T2 of the transformer B2 of igniting output circuit and up to the voltage of 20000V gaseous discharge lamp is lighted.The transformer B2 of igniting output circuit adopts big inductance technology to make, and plays the effect of hv filtering in the operate as normal after igniting is finished.Current control circuit is regulated the size of power output by the voltage difference that reads the 9th resistance R 9, to reach the purpose of firm power output.
Claims (9)
1. gas discharge lamp ballast, comprise the switching circuit and the igniting output circuit that are linked in sequence with power supply, it is characterized in that: the transformer of described switching circuit is provided with main coil and more than one ancillary coil, one termination power positive pole of main coil, the positive pole of another termination capacitor, simultaneously through switching tube ground connection, the negative pole of electric capacity is through ancillary coil ground connection, the trigger electrode of switching tube connects the output of switch power controller, and the feedback signal input of switch power controller is connected with transformer secondary output coil one end of switching circuit by divider resistance.
2. gas discharge lamp ballast according to claim 1, it is characterized in that: the transformer of described switching circuit has two, one termination power positive pole of first coil, the positive pole of another termination second electric capacity, the negative pole of second electric capacity is through the second coil ground connection.
3. gas discharge lamp ballast according to claim 2 is characterized in that: described switching tube is first field effect transistor, and source electrode connects the other end of first coil, and grounded drain, grid connect the output of switch power controller through first resistance; The feedback signal input termination of switch power controller is serially connected in transformer secondary output coil one end and the 3rd resistance between the ground connection and the dividing point of the 5th resistance of switching circuit.
4. gas discharge lamp ballast according to claim 3, it is characterized in that: first coil, one end of the transformer of described igniting output circuit connects logically through switching discharge tube, another termination the 7th electric capacity one end, connect transformer secondary output coil one end of switching circuit simultaneously through the 6th resistance, another termination of the 7th electric capacity logically; Transformer secondary output coil one end of switching circuit also connects logically through second coil, the gaseous discharge lamp of transformer of igniting output circuit.
5. gas discharge lamp ballast according to claim 4, it is characterized in that: the negative pole of another termination first diode of the transformer secondary output coil of described switching circuit, the plus earth of first diode, the negative pole of first diode and ground connection two ends are parallel with the 4th resistance and the 5th electric capacity that is in series.
6. gas discharge lamp ballast according to claim 5 is characterized in that: be parallel with the tenth resistance and the 6th electric capacity that is in series between transformer secondary output coil one end of described switching circuit and the gaseous discharge lamp; Be parallel with the 3rd electric capacity and second resistance that is in series between the source electrode of first field effect transistor and the drain electrode.
7. gas discharge lamp ballast according to claim 6 is characterized in that: be serially connected with the 4th electric capacity between transformer secondary output coil one end of described switching circuit and the ground connection; Ground connection and logically between be serially connected with the 9th resistance; Be serially connected with first electric capacity between input positive source and the ground connection.
8. gas discharge lamp ballast according to claim 7, it is characterized in that: described input power cathode connects the source electrode of second field effect transistor, the grounded drain of second field effect transistor connects the grid of second field effect transistor with the dividing point of the 7th resistance of connecting between positive source and the ground connection and the 8th resistance.
9. gas discharge lamp ballast according to claim 8, it is characterized in that: described second field effect transistor is selected S19926 for use, first field effect transistor is selected IRF3710 for use, first electric capacity is selected 330 μ/25V for use, the 8th resistance is selected 1K for use, the 7th resistance is selected 100K for use, and the transformer of switching circuit is selected EFD-20 for use, EFD-25, RM6, RM8 or RM10 magnetic core, second electric capacity is selected 330 μ/50V for use, the 3rd electric capacity is selected 1000P for use, second resistance is selected 18 Ω for use, and first diode is selected MUR860 for use, and the 4th resistance is selected 330 Ω for use, the 5th electric capacity is selected 150P for use, the 4th electric capacity is selected 0.1 μ for use, and the 6th electric capacity is selected 4.7 μ/400V for use, and the tenth resistance is selected 330 Ω for use, the 6th resistance is selected 100K for use, the 7th electric capacity selects 0.1 for use, 0.22,0.33 or 0.47 μ, switching discharge tube is selected 300V for use, the igniting output circuit transformer select EFD-15 or EE-19 magnetic core for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055409 CN2779794Y (en) | 2005-03-01 | 2005-03-01 | Gas-discharge lamp ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055409 CN2779794Y (en) | 2005-03-01 | 2005-03-01 | Gas-discharge lamp ballast |
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| Publication Number | Publication Date |
|---|---|
| CN2779794Y true CN2779794Y (en) | 2006-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055409 Expired - Fee Related CN2779794Y (en) | 2005-03-01 | 2005-03-01 | Gas-discharge lamp ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2779794Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964589B (en) * | 2006-11-14 | 2010-11-10 | 西安交通大学 | A topology and power conversion circuit of electronic ballast of high intensity gas discharge lamp |
| CN101742795B (en) * | 2010-01-28 | 2012-11-14 | 浙江工业大学 | Electronic ballast |
-
2005
- 2005-03-01 CN CN 200520055409 patent/CN2779794Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964589B (en) * | 2006-11-14 | 2010-11-10 | 西安交通大学 | A topology and power conversion circuit of electronic ballast of high intensity gas discharge lamp |
| CN101742795B (en) * | 2010-01-28 | 2012-11-14 | 浙江工业大学 | Electronic ballast |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |