CN210899767U - Driver for high-speed rail emergency lighting lamp - Google Patents
Driver for high-speed rail emergency lighting lamp Download PDFInfo
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- CN210899767U CN210899767U CN201922114185.XU CN201922114185U CN210899767U CN 210899767 U CN210899767 U CN 210899767U CN 201922114185 U CN201922114185 U CN 201922114185U CN 210899767 U CN210899767 U CN 210899767U
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- 230000010355 oscillation Effects 0.000 claims abstract description 13
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- 230000002457 bidirectional effect Effects 0.000 claims description 9
- 230000001629 suppression Effects 0.000 claims description 2
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- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses a driver for a high-speed rail emergency lighting lamp, which comprises a filter circuit, a push-pull oscillation circuit, a preheating control circuit and a boosting output circuit; the filter circuit is suitable for being connected with an external direct-current power supply so as to filter direct-current voltage input by the direct-current power supply and output filtered voltage; the push-pull oscillating circuit is connected with the filter circuit and is suitable for converting the filter voltage from direct current into alternating current; the boosting output circuit is respectively connected with the push-pull oscillating circuit and the load lamp tube and is suitable for boosting the alternating current and outputting the boosted alternating current to the load lamp tube so as to drive the load lamp tube to work; the preheating control circuit is respectively connected with the push-pull oscillating circuit and the load lamp tube and is suitable for preheating control of the load lamp tube by using alternating current converted by the push-pull oscillating circuit so as to enable the load lamp tube to enter a normal working state. The utility model discloses can drive emergency lighting lamp work well, and can preheat emergency lighting lamp when starting.
Description
Technical Field
The utility model relates to a driver for high-speed railway emergency lighting lamp.
Background
At present, most of existing high-speed rail emergency lighting lamp drivers have high requirements on input current, most of the drivers have complex structures and high cost, load lamp tubes can be damaged when the drivers are suddenly started, and power consumption is not low.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a driver for high-speed railway emergency lighting lamp, it can drive emergency lighting lamp work well, and can preheat emergency lighting lamp when starting.
In order to solve the technical problem, the technical scheme of the utility model is that: a driver for a high-speed rail emergency lighting lamp is used for driving a load lamp tube to work and comprises a filter circuit, a push-pull oscillation circuit, a preheating control circuit and a boosting output circuit; wherein,
the filter circuit is suitable for being connected with an external direct current power supply so as to filter direct current voltage input by the direct current power supply and output filtered voltage;
the push-pull oscillating circuit is connected with the filter circuit and is suitable for converting the filter voltage from direct current into alternating current;
the boosting output circuit is respectively connected with the push-pull oscillating circuit and the load lamp tube and is suitable for boosting the alternating current and outputting the boosted alternating current to the load lamp tube so as to drive the load lamp tube to work;
the preheating control circuit is respectively connected with the push-pull oscillating circuit and the load lamp tube and is suitable for preheating control of the load lamp tube by using alternating current converted by the push-pull oscillating circuit so as to enable the load lamp tube to enter a normal working state.
Further provided is a concrete structure of a filter circuit, the filter circuit comprises an input terminal J1, an input terminal J2, a bidirectional suppression diode D1, a current-limiting resistor R1, a rectifier diode D2 and a filter capacitor C1; wherein,
the input terminal J1 is connected with the push-pull oscillating circuit through an output wire and is suitable for being connected with the positive pole of an external direct current power supply, and the input terminal J2 is grounded and is suitable for being connected with the negative pole of the external direct current power supply;
the current-limiting resistor R1 and the rectifier diode D2 which is connected in series are sequentially connected on the output wire, the input end of the current-limiting resistor R1 is grounded through the bidirectional suppressor diode D1, and the cathode of the rectifier diode is grounded through the filter capacitor C1.
Further to prevent the input current from being excessively large, the filter circuit further includes a fuse F1 connected in series to a portion of the output electric wire between the input terminal J1 and the connection point of the bidirectional suppressor diode D1 and the output electric wire.
Further provided is a concrete structure of a push-pull oscillating circuit, the push-pull oscillating circuit comprises two field effect transistors, a plurality of resistors, a plurality of diodes, an inductor L1, at least one capacitor and a first primary winding, a second primary winding and a feedback winding of a push-pull transformer TR 1; wherein,
the input end of the resistor R2 and the input end of the resistor R4 are respectively connected with the output end of the filter circuit, the output end of the resistor R2 is grounded through a series circuit formed by a reversely connected diode D9 and a positively connected diode D10 and a resistor R3, the output end of the resistor R4 is grounded through a series circuit formed by a reversely connected diode D11 and a positively connected diode D12 and a resistor R5, and a capacitor C2 is connected between the output end of the resistor R2 and the output end of the resistor R4;
the lower end of the first primary winding is connected with the upper end of the second primary winding to be used as a center tap, the output end of the filter circuit is connected with the center tap through an inductor L1, the upper end of the first primary winding is connected with the drain electrode of a field effect transistor Q2, and the lower end of the second primary winding is connected with the drain electrode of a field effect transistor Q1;
the upper end of the feedback winding is connected with the output end of a resistor R2 through a resistor R6, and the lower end of the feedback winding is connected with the output end of a resistor R4 through a resistor R7;
the grid electrode of the field effect transistor Q1 is connected with the output end of the resistor R4, and the source electrode is grounded; the grid electrode of the field effect transistor Q2 is connected with the output end of the resistor R2, and the source electrode is grounded;
the anode of the diode D3 is connected with the output end of the resistor R4, and the cathode of the diode D3 is connected with the drain of the field effect transistor Q2;
the anode of the diode D4 is connected to the output terminal of the resistor R2, and the cathode is connected to the drain of the field effect transistor Q1.
Further, the push-pull oscillation circuit further comprises a capacitor C3 and a capacitor C7 which are connected in parallel between the upper end of the first primary winding and the lower end of the second primary winding to adjust the oscillation frequency.
Further provided is a concrete structure of a boost output circuit, which comprises a boost winding of a push-pull transformer TR1 and an output inductor L2; wherein,
the upper end of the boost winding is connected to one end of the load lamp via an output inductor L2, and the lower end is connected to the other end of the load lamp.
Further, the preheating control circuit comprises a plurality of diodes, a plurality of resistors, at least one capacitor, a field effect transistor Q3, a triode Q4 and a secondary winding of a push-pull transformer TR 1; wherein,
the upper end of the secondary winding is in signal grounding through a diode D14, a diode D15 and a capacitor C5 which are connected in series in sequence and are in positive connection, and the lower end of the secondary winding is in signal grounding;
the base electrode of the triode Q4 is connected with the input end of the capacitor C5 through the diode D16 which is positively connected, the collector electrode is connected with the grid electrode of the field effect transistor Q3, and the emitter electrode signal is grounded;
the diode D5, the diode D6, the diode D7 and the diode D8 form a rectifier bridge stack;
the load lamp tube is connected between two input ends of the rectifier bridge stack, the positive output end of the rectifier bridge stack is connected with the drain electrode of the field-effect tube Q3, and the negative output end of the rectifier bridge stack and the source electrode of the field-effect tube Q3 are respectively in signal grounding.
Further, the positive output end of the rectifier bridge stack is respectively in signal grounding through a capacitor C6 and a resistor R12;
the cathode of the diode D14 is respectively connected with the signal ground through the resistor R10 and the capacitor C4;
one end of the resistor R8 is connected with the collector of the triode Q4, one end of the resistor R9 is connected with the cathode of the diode D14, and one end of the resistor R11 is connected with the input end of the capacitor C5;
the other end of the resistor R8, the other end of the resistor R9, and the other end of the resistor R11 are connected to ground through a diode D13 in reverse order.
Further in order to facilitate the connection of the boost output circuit and the preheating control circuit with the load lamp tube, the driver for the high-speed rail emergency lighting lamp further comprises a connecting terminal suitable for being connected with the load lamp tube, and the output end of the output inductor L2, the lower end of the boost winding and each input end of the rectifier bridge stack are respectively connected with one terminal of the connecting terminal.
After having adopted above-mentioned technical scheme, filter circuit carries out filtering and output filter voltage to its DC voltage of input, and push-pull oscillation circuit converts filter voltage into the alternating current, and output circuit steps up the operation to the alternating current in order to supply power to the load fluorescent tube, preheats control circuit simultaneously and introduces the electric current from the both ends of load fluorescent tube, preheats the break-make that control circuit recycled alternating current control and introduces the electric current and accomplishes preheating control, the utility model discloses can drive low pressure fluorescent lamp work under direct current emergency mode to take preheating control's mode, and then can drive load fluorescent tube steady operation well, and whole driver simple structure, low power dissipation.
Drawings
Fig. 1 is a schematic block diagram of the driver for the emergency lighting lamp of the high-speed rail according to the present invention;
fig. 2 is a circuit diagram of the driver for the emergency lighting lamp of the high-speed rail according to the present invention;
fig. 3 is a circuit diagram of the filter circuit of the present invention;
fig. 4 is a circuit diagram of a push-pull oscillation circuit according to the present invention;
fig. 5 is a circuit diagram of the preheating control circuit of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 and 2, a driver for a high-speed rail emergency lighting lamp is used for driving a load lamp tube 6 to work, and comprises a filter circuit 1, a push-pull oscillation circuit 2, a preheating control circuit 3 and a boosting output circuit 4; wherein,
the filter circuit 1 is suitable for being connected with an external direct-current power supply so as to filter direct-current voltage input by the direct-current power supply and output filtered voltage;
the push-pull oscillating circuit 2 is connected with the filter circuit 1 and is suitable for converting the filter voltage from direct current into alternating current;
the boosting output circuit 4 is respectively connected with the push-pull oscillating circuit 2 and the load lamp tube 6 and is suitable for boosting the alternating current and outputting the boosted alternating current to the load lamp tube 6 so as to drive the load lamp tube 6 to work;
the preheating control circuit 3 is respectively connected with the push-pull oscillating circuit 2 and the load lamp tube 6, and is suitable for preheating control of the load lamp tube 6 by using alternating current converted by the push-pull oscillating circuit 2 so as to enable the load lamp tube 6 to enter a normal working state.
Specifically, filter circuit 1 filters and exports filter voltage to its direct current voltage of input, and push-pull oscillation circuit 2 converts filter voltage into the alternating current, and output circuit 4 steps up the operation to the alternating current in order to supply power to load fluorescent tube 6, preheats control circuit 3 simultaneously and introduces the electric current from the both ends of load fluorescent tube 6, preheats control circuit 3 and recycles the break-make that alternating current control introduced the electric current and accomplishes preheating control, the utility model discloses can drive low pressure fluorescent lamp work under the emergent mode of direct current to take preheating control's mode, and then can drive load fluorescent tube 6 steady operation well, and whole driver simple structure, low power dissipation.
As shown in fig. 2, the filter circuit 1 includes an input terminal J1, an input terminal J2, a bidirectional suppressor diode D1, a current-limiting resistor R1, a rectifier diode D2, and a filter capacitor C1; wherein,
the input terminal J1 is connected with the push-pull oscillating circuit 2 through an output wire and is suitable for being connected with the anode of an external direct current power supply, and the input terminal J2 is grounded and is suitable for being connected with the cathode of the external direct current power supply;
the current-limiting resistor R1 and the rectifier diode D2 which is connected in series are sequentially connected on the output wire, the input end of the current-limiting resistor R1 is grounded through the bidirectional suppressor diode D1, and the cathode of the rectifier diode is grounded through the filter capacitor C1.
As shown in fig. 2, in order to prevent the input current from being excessively large, the filter circuit 1 further includes a fuse F1 connected in series to a portion of the output electric wire between the input terminal J1 and the connection point of the bidirectional suppressor diode D1 and the output electric wire.
As shown in fig. 2, the push-pull oscillator circuit 2 includes two field effect transistors, a plurality of resistors, a plurality of diodes, an inductor L1, at least one capacitor, and a first primary winding, a second primary winding, and a feedback winding of a push-pull transformer TR 1; wherein,
the input end of the resistor R2 and the input end of the resistor R4 are respectively connected with the output end of the filter circuit 1, the output end of the resistor R2 is grounded through a series circuit formed by a reversely connected diode D9 and a positively connected diode D10 and a resistor R3, the output end of the resistor R4 is grounded through a series circuit formed by a reversely connected diode D11 and a positively connected diode D12 and a resistor R5, and a capacitor C2 is connected between the output end of the resistor R2 and the output end of the resistor R4;
the lower end of the first primary winding is connected with the upper end of the second primary winding to be used as a center tap, the output end of the filter circuit 1 is connected with the center tap through an inductor L1, the upper end of the first primary winding is connected with the drain electrode of a field effect transistor Q2, and the lower end of the second primary winding is connected with the drain electrode of a field effect transistor Q1;
the upper end of the feedback winding is connected with the output end of a resistor R2 through a resistor R6, and the lower end of the feedback winding is connected with the output end of a resistor R4 through a resistor R7;
the grid electrode of the field effect transistor Q1 is connected with the output end of the resistor R4, and the source electrode is grounded; the grid electrode of the field effect transistor Q2 is connected with the output end of the resistor R2, and the source electrode is grounded;
the anode of the diode D3 is connected with the output end of the resistor R4, and the cathode of the diode D3 is connected with the drain of the field effect transistor Q2;
the anode of the diode D4 is connected to the output terminal of the resistor R2, and the cathode is connected to the drain of the field effect transistor Q1.
In the present embodiment, the type of the fet Q1 and/or the fet Q2 is IRF 740.
As shown in fig. 2, the push-pull oscillation circuit 2 further includes a capacitor C3 and a capacitor C7 connected in parallel between the upper end of the first primary winding and the lower end of the second primary winding to adjust the oscillation frequency.
As shown in fig. 2, the boost output circuit 4 includes a boost winding of a push-pull transformer TR1 and an output inductor L2; wherein,
the upper end of the boost winding is connected to one end of the load lamp 6 through an output inductor L2, and the lower end is connected to the other end of the load lamp 6.
As shown in fig. 1 and 2, the preheating control circuit 3 includes a plurality of diodes, a plurality of resistors, at least one capacitor, a field effect transistor Q3, a transistor Q4, and a secondary winding of a push-pull transformer TR 1; wherein,
the upper end of the secondary winding is in signal grounding through a diode D14, a diode D15 and a capacitor C5 which are connected in series in sequence and are in positive connection, and the lower end of the secondary winding is in signal grounding;
the base electrode of the triode Q4 is connected with the input end of the capacitor C5 through the diode D16 which is positively connected, the collector electrode is connected with the grid electrode of the field effect transistor Q3, and the emitter electrode signal is grounded;
the diode D5, the diode D6, the diode D7 and the diode D8 form a rectifier bridge stack;
the load lamp tube 6 is connected between two input ends of the rectifier bridge stack, the positive output end of the rectifier bridge stack is connected with the drain electrode of the field effect tube Q3, and the negative output end of the rectifier bridge stack and the source electrode of the field effect tube Q3 are respectively in signal grounding.
In this embodiment, the fet Q3 is of the type STP6NK90Z, and the transistor Q4 is of the type BC 337.
Specifically, an alternating current signal induced by the secondary winding is subjected to RC charging on a capacitor C5 through a pulsating signal rectified by a half-wave of a diode D14, when the voltage is larger than a voltage stabilizing value of a diode D16, the pulsating signal is added to a base electrode of a triode Q4 to enable the triode Q4 to be conducted, so that the grid potential of a field-effect tube Q3 is reduced to close the field-effect tube Q3 to cut off the output current of a rectifier bridge stack, preheating control over the load lamp tube 6 is completed, and the lamp tube can enter a normal working state.
As shown in fig. 2, the positive output terminal of the bridge rectifier is respectively connected to signal ground through a capacitor C6 and a resistor R12;
the cathode of the diode D14 is respectively connected with the signal ground through the resistor R10 and the capacitor C4;
one end of the resistor R8 is connected with the collector of the triode Q4, one end of the resistor R9 is connected with the cathode of the diode D14, and one end of the resistor R11 is connected with the input end of the capacitor C5;
the other end of the resistor R8, the other end of the resistor R9, and the other end of the resistor R11 are connected to ground through a diode D13 in reverse order.
As shown in fig. 1 and 2, in order to facilitate the connection between the boost output circuit 4 and the preheating control circuit 3 and the load lamp 6, the driver for the high-speed rail emergency lighting lamp further includes a connection terminal 5 adapted to be connected to the load lamp 6, and the output end of the output inductor L2, the lower end of the boost winding, and each input end of the rectifier bridge stack are respectively connected to one terminal of the connection terminal 5.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (9)
1. A driver for a high-speed rail emergency lighting lamp is used for driving a load lamp tube (6) to work and is characterized in that,
the device comprises a filter circuit (1), a push-pull oscillation circuit (2), a preheating control circuit (3) and a boosting output circuit (4); wherein,
the filter circuit (1) is suitable for being connected with an external direct current power supply so as to filter direct current voltage input by the direct current power supply and output filtered voltage;
the push-pull oscillating circuit (2) is connected with the filter circuit (1) and is suitable for converting the filter voltage from direct current into alternating current;
the boosting output circuit (4) is respectively connected with the push-pull oscillating circuit (2) and the load lamp tube (6) and is suitable for boosting the alternating current and outputting the boosted alternating current to the load lamp tube (6) to drive the load lamp tube (6) to work;
the preheating control circuit (3) is respectively connected with the push-pull oscillating circuit (2) and the load lamp tube (6) and is suitable for preheating control over the load lamp tube (6) by using alternating current converted by the push-pull oscillating circuit (2) so that the load lamp tube (6) enters a normal working state.
2. Driver for a high-speed rail emergency lighting lamp according to claim 1,
the filter circuit (1) comprises an input terminal J1, an input terminal J2, a bidirectional suppression diode D1, a current-limiting resistor R1, a rectifier diode D2 and a filter capacitor C1; wherein,
the input terminal J1 is connected with the push-pull oscillating circuit (2) through an output wire and is suitable for being connected with the positive pole of an external direct current power supply, and the input terminal J2 is grounded and is suitable for being connected with the negative pole of the external direct current power supply;
the current-limiting resistor R1 and the rectifier diode D2 which is connected in series are sequentially connected on the output wire, the input end of the current-limiting resistor R1 is grounded through the bidirectional suppressor diode D1, and the cathode of the rectifier diode is grounded through the filter capacitor C1.
3. Driver for a high-speed rail emergency lighting lamp according to claim 2,
the filter circuit (1) further includes a fuse F1 connected in series to a portion of the output electric wire between the input terminal J1 and a connection point of the bidirectional suppressor diode D1 and the output electric wire.
4. Driver for a high-speed rail emergency lighting lamp according to claim 1,
the push-pull oscillating circuit (2) comprises two field effect transistors, a plurality of resistors, a plurality of diodes, an inductor L1, at least one capacitor and a first primary winding, a second primary winding and a feedback winding of a push-pull transformer TR 1; wherein,
the input end of the resistor R2 and the input end of the resistor R4 are respectively connected with the output end of the filter circuit (1), the output end of the resistor R2 is grounded through a series circuit consisting of a reversely connected diode D9 and a positively connected diode D10 and a resistor R3, the output end of the resistor R4 is grounded through a series circuit consisting of a reversely connected diode D11 and a positively connected diode D12 and a resistor R5, and a capacitor C2 is connected between the output end of the resistor R2 and the output end of the resistor R4;
the lower end of the first primary winding is connected with the upper end of the second primary winding to be used as a center tap, the output end of the filter circuit (1) is connected with the center tap through an inductor L1, the upper end of the first primary winding is connected with the drain electrode of a field effect transistor Q2, and the lower end of the second primary winding is connected with the drain electrode of a field effect transistor Q1;
the upper end of the feedback winding is connected with the output end of a resistor R2 through a resistor R6, and the lower end of the feedback winding is connected with the output end of a resistor R4 through a resistor R7;
the grid electrode of the field effect transistor Q1 is connected with the output end of the resistor R4, and the source electrode is grounded; the grid electrode of the field effect transistor Q2 is connected with the output end of the resistor R2, and the source electrode is grounded;
the anode of the diode D3 is connected with the output end of the resistor R4, and the cathode of the diode D3 is connected with the drain of the field effect transistor Q2;
the anode of the diode D4 is connected to the output terminal of the resistor R2, and the cathode is connected to the drain of the field effect transistor Q1.
5. Driver for a high-speed rail emergency lighting lamp according to claim 4,
the push-pull oscillation circuit (2) further comprises a capacitor C3 and a capacitor C7 which are connected in parallel between the upper end of the first primary winding and the lower end of the second primary winding to adjust the oscillation frequency.
6. Driver for a high-speed rail emergency lighting lamp according to claim 4,
the boost output circuit (4) comprises a boost winding of a push-pull transformer TR1 and an output inductor L2; wherein,
the upper end of the boosting winding is connected to one end of the load lamp tube (6) through an output inductor L2, and the lower end of the boosting winding is connected to the other end of the load lamp tube (6).
7. Driver for a high-speed rail emergency lighting lamp according to claim 6,
the preheating control circuit (3) comprises a plurality of diodes, a plurality of resistors, at least one capacitor, a field effect transistor Q3, a triode Q4 and a secondary winding of a push-pull transformer TR 1; wherein,
the upper end of the secondary winding is in signal grounding through a diode D14, a diode D15 and a capacitor C5 which are connected in series in sequence and are in positive connection, and the lower end of the secondary winding is in signal grounding;
the base electrode of the triode Q4 is connected with the input end of the capacitor C5 through the diode D16 which is positively connected, the collector electrode is connected with the grid electrode of the field effect transistor Q3, and the emitter electrode signal is grounded;
the diode D5, the diode D6, the diode D7 and the diode D8 form a rectifier bridge stack;
the load lamp tube (6) is connected between two input ends of the rectifier bridge stack, the positive output end of the rectifier bridge stack is connected with the drain electrode of the field-effect tube Q3, and the negative output end of the rectifier bridge stack and the source electrode of the field-effect tube Q3 are respectively in signal grounding.
8. Driver for a high-speed rail emergency lighting lamp according to claim 7,
the positive output end of the rectifier bridge stack is respectively in signal grounding through a capacitor C6 and a resistor R12;
the cathode of the diode D14 is respectively connected with the signal ground through the resistor R10 and the capacitor C4;
one end of the resistor R8 is connected with the collector of the triode Q4, one end of the resistor R9 is connected with the cathode of the diode D14, and one end of the resistor R11 is connected with the input end of the capacitor C5;
the other end of the resistor R8, the other end of the resistor R9, and the other end of the resistor R11 are connected to ground through a diode D13 in reverse order.
9. Driver for a high-speed rail emergency lighting lamp according to claim 7,
the power supply further comprises a connecting terminal (5) suitable for being connected with a load lamp tube (6), and the output end of the output inductor L2, the lower end of the boosting winding and each input end of the rectifier bridge stack are respectively connected with one terminal of the connecting terminal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114185.XU CN210899767U (en) | 2019-11-29 | 2019-11-29 | Driver for high-speed rail emergency lighting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114185.XU CN210899767U (en) | 2019-11-29 | 2019-11-29 | Driver for high-speed rail emergency lighting lamp |
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| Publication Number | Publication Date |
|---|---|
| CN210899767U true CN210899767U (en) | 2020-06-30 |
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| CN201922114185.XU Active CN210899767U (en) | 2019-11-29 | 2019-11-29 | Driver for high-speed rail emergency lighting lamp |
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