CN220401997U - Voltage doubling flash lamp tube circuit - Google Patents
Voltage doubling flash lamp tube circuit Download PDFInfo
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- CN220401997U CN220401997U CN202321562523.6U CN202321562523U CN220401997U CN 220401997 U CN220401997 U CN 220401997U CN 202321562523 U CN202321562523 U CN 202321562523U CN 220401997 U CN220401997 U CN 220401997U
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- flash lamp
- lamp tube
- voltage doubling
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- 239000003990 capacitor Substances 0.000 claims abstract description 59
- 238000004804 winding Methods 0.000 claims description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
The application relates to a voltage doubling flash lamp tube circuit, which comprises a flash lamp tube, a main capacitor EC1, a charging module, a high-voltage triggering module and a voltage doubling module, wherein the output end of the charging module is electrically connected to the input ends of the high-voltage triggering module and the voltage doubling module respectively; the high-voltage triggering module is connected with the signal output end of the external control system by a controlled signal, and is used for controlling the flash lamp tube; the negative electrode of the flash lamp tube is grounded through a voltage doubling module, and the voltage doubling module is used for improving the voltage at two ends of the flash lamp tube. The method has the effect of saving cost while enabling the performance index of the flash lamp tube to reach the standard as much as possible.
Description
Technical Field
The application relates to the technical field of power electronics, in particular to a voltage doubling flash lamp tube circuit.
Background
The photography industry in the world today involves many fields, so that the flash lamps in photographic equipment have different levels of requirements in terms of product performance: if the flash lamp is used in a scene, the technical index of the flash lamp is required to be high, and if the flash lamp is required to have conventional performance in a scene. In the current market, most manufacturers simply use the circuit of the flash lamp, namely, the flash lamp is directly connected in parallel to the main capacitor, the positive electrode of the flash lamp is electrically connected to the positive electrode of the main capacitor and the working power supply, the negative electrode of the flash lamp is electrically connected to the negative electrode of the main capacitor and is grounded, and the flash lamp is triggered to work by giving a trigger signal high voltage.
However, in practical use, the working voltage of the flash lamp is particularly important, when the working voltage is low, the performance index of the flash lamp is difficult to reach the standard, and the flash lamp is in a hot state at the moment, and the flash lamp is easy to automatically flash when being very hot; when the working voltage is higher, the flash lamp tube is in a cold state, flash is not easy to be excited, and the problem of flash leakage is serious. The operating voltage of the flash light depends on the withstand voltage value of the main capacitor, and the withstand voltage value of the main capacitor cannot be too high because the main capacitor has the limit of the main capacitor, and the condition for providing the operating voltage of the flash light is that the main capacitor with higher withstand voltage value is used, and the cost of the main capacitor with higher withstand voltage value is higher.
Disclosure of Invention
In order to enable the working performance index of the flash lamp tube to reach the standard as much as possible and save the cost, the application provides a voltage doubling flash lamp tube circuit.
The voltage doubling flash lamp tube circuit adopts the following technical scheme:
the voltage doubling flash lamp tube circuit comprises a flash lamp tube, a main capacitor EC1, a charging module, a high-voltage triggering module and a voltage doubling module, wherein the output end of the charging module is electrically connected to the input ends of the high-voltage triggering module and the voltage doubling module respectively; the high-voltage triggering module is connected with a signal output end of an external control system by a controlled signal, and is used for controlling the flash lamp tube; the negative electrode of the flash lamp tube is grounded through the voltage doubling module, and the voltage doubling module is used for improving the voltage at two ends of the flash lamp tube.
By adopting the technical scheme, when the external control system outputs the Trigger signal Trigger to the high-voltage Trigger module, the high-voltage Trigger module starts to work, so that the flash lamp tube can start to work; and the working voltage at the two ends of the flash lamp tube can be improved by utilizing the voltage doubling module, so that the working performance index of the flash lamp tube can reach the standard as far as possible.
Preferably, the voltage doubling module comprises a second capacitor C2, wherein the positive electrode of the second capacitor C2 is electrically connected to the output end of the charging module, and the negative electrode of the second capacitor C2 is electrically connected to the negative electrode of the flash lamp tube.
By adopting the technical scheme, by utilizing the charge-discharge characteristic of the second capacitor C2, after the second capacitor C2 is fully charged through the charging module, the second capacitor C2 releases voltage, so that the voltage at two ends of the flash lamp tube is the sum of the voltage of the main capacitor EC1 and the voltage released by the second capacitor C2, the working voltage of the flash lamp tube is improved, and the working quality of the flash lamp tube is ensured as much as possible.
Preferably, the voltage doubling module further includes a second diode D2, an anode of the second diode D2 is electrically connected to a cathode of the second capacitor C2, and a cathode of the second diode D2 is grounded.
By adopting the technical scheme, the second diode D2 is utilized to play a role in preventing reverse flow, so that the release voltage of the second capacitor C2 can be loaded to the two ends of the flash lamp tube as much as possible.
Preferably, the high-voltage triggering module comprises a first capacitor C1, a transformer T1, a triggering coil TR and a switching tube TH1, wherein a control end of the switching tube TH1 is connected to a signal output end of the external control system in a signal manner; the output end of the charging module is electrically connected to the positive electrode of the first capacitor C1, the negative electrode of the first capacitor C1 is electrically connected to the 1 pin of the N1 winding in the transformer T1, the 2 pin of the N1 winding in the transformer T1 is electrically connected to the 3 pin of the N2 winding in the transformer T1, the 4 pin of the N2 winding in the transformer T1 is electrically connected to the trigger coil TR, and the trigger coil TR is used for triggering the flash lamp tube.
By adopting the technical scheme, when the switching tube TH1 is cut off, the charging module charges the first capacitor C1, and the transformer T1 does not work; when the switch tube TH1 is conducted, the first capacitor C1 releases the voltage, so that the N1 winding of the transformer T1 generates the voltage which changes instantaneously, the transformer T1 starts to work and the voltage output to the trigger coil TR wound on the flash lamp tube is increased, and the high-voltage trigger of the flash lamp tube is further realized.
Preferably, the switching tube TH1 is configured as a unidirectional thyristor.
By adopting the technical scheme, the high-power circuit with high voltage resistance and high current can be more properly processed by utilizing the unidirectional silicon controlled rectifier.
Preferably, the charging module includes a charging power supply VC and a first diode D1, where an anode of the first diode D1 is electrically connected to an output terminal of the charging power supply VC, and a cathode of the first diode D1 is electrically connected to input terminals of the high voltage triggering module and the voltage doubling module.
Through adopting above-mentioned technical scheme, utilize first diode D1 to play the effect that prevents charging source VC and connect conversely, when charging source VC connects conversely, first diode D1 is broken down and is cut off to realize protection circuit.
Preferably, the charging module further includes a first resistor R1, and the first resistor R1 is connected in series between the output terminal of the charging power supply VC and the anode of the first diode D1.
By adopting the technical scheme, the first resistor R1 is utilized to play a role of buffering.
Preferably, the charging module further includes a switch L1, and the switch L1 is connected in series between the charging power supply VC and the first resistor R1.
By adopting the technical scheme, the switch L1 is utilized so as to control whether the charging power supply VC is put into or not.
In summary, the present application includes at least one of the following beneficial technical effects: the high-voltage triggering module is utilized to realize the high-voltage triggering of the flash lamp tube, and the voltage doubling module is utilized to realize the improvement of the working voltage of the flash lamp tube after the triggering, so that the working performance index of the flash lamp tube after the high-voltage triggering of the flash lamp tube can reach the standard as far as possible; in addition, the working voltage of the flash lamp tube can be improved by utilizing the second capacitor C2 under the condition that the main capacitor EC1 is not replaced, so that the cost is saved; besides, the circuit can be protected to the greatest extent by utilizing the first diode D1 and the second diode D2, and the normal operation of the flash lamp tube is ensured.
Drawings
FIG. 1 is a functional block diagram of an embodiment of the present application;
fig. 2 is a circuit diagram of an embodiment of the present application.
Reference numerals: 1. a charging module; 2. a high voltage trigger module; 3. and the voltage doubling module.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-2.
The embodiment of the application discloses a voltage doubling flash lamp tube circuit.
Referring to fig. 1, a voltage doubling flash lamp circuit includes a flash lamp, a main capacitor EC1, a charging module 1, a high voltage trigger module 2, and a voltage doubling module 3, wherein an anode of the flash lamp is electrically connected with a working power supply HV, and a voltage output end of the working power supply HV is also electrically connected to an anode of the main capacitor EC 1. The negative electrode of the flash lamp tube is grounded through the voltage doubling module 3, and the negative electrode of the main capacitor EC1 is grounded. The output end of the charging module 1 is electrically connected to the input ends of the high-voltage triggering module 2 and the voltage doubling module 3 respectively, and the control end of the high-voltage triggering module 2 is connected to the signal output end of an external control system. The external control system enables the high-voltage triggering module 2 to be triggered by outputting a triggering signal Trigger, so that the high-voltage triggering of the flash lamp tube is realized; when the high-voltage triggering module 2 is triggered, the working voltage at the two ends of the flash lamp tube is increased through the voltage doubling module 3, so that the working performance index of the flash lamp tube can reach the standard as much as possible, and the normal working of the flash lamp tube is ensured to the greatest extent.
Referring to fig. 2, the charging module 1 includes a first resistor R1, a first diode D1, and a charging power supply VC, and the charging power supply VC is a direct current power supply. The output end of the charging power supply VC is electrically connected to one end of a first resistor R1, the other end of the first resistor R1 is electrically connected to the positive electrode of a first diode D1, and the negative electrode of the first diode D1 is the output end of the charging module 1. A switch L1 is connected in series between the voltage output terminal of the charging power supply VC and the first resistor R1, so as to control whether the charging power supply V1 is turned on or off.
Referring to fig. 2, the high voltage triggering module 2 includes a first capacitor C1, a transformer T1, a triggering coil TR, and a switching tube TH1, and the number of turns of an N1 winding in the transformer T1 is smaller than the number of turns of an N2 winding. In the embodiment, the switching tube TH1 is set to be a unidirectional silicon controlled rectifier, and the unidirectional silicon controlled rectifier can process high-power devices with high voltage resistance and high current. The output end of the charging module 1 is electrically connected to one end of a first capacitor C1, the other end of the first capacitor C1 is electrically connected to a 1 pin in an N1 winding in the transformer T1, a 2 pin in the N1 winding is electrically connected to a 3 pin in an N2 winding in the transformer T1, a 4 pin in the N2 winding is electrically connected to a trigger coil TR, and the trigger coil TR is used for controlling a flash lamp tube. The positive pole of switch tube TH1 is connected to the output of charging module 1, and the positive pole of switch tube TH1 is connected to 2 feet and the ground connection of transformer T1, and the control end signal of switch tube TH1 is controlled by Trigger signal Trigger.
Referring to fig. 2, for convenience of explanation, let an output terminal of the charging module 1 be a, an end of the second capacitor C2 for electrically connecting the second diode D2 be b, and an end of the first capacitor C1 for electrically connecting the transformer T1 be C. When the Trigger signal Trigger is at a low level, the switching tube TH1 is turned off, and the circuit is in a steady state. The charging power supply VC charges the first capacitor C1 through the first resistor R1 and the first diode D1. After the charging is full, because the charging power supply VC is a direct current power supply, the N1 winding of the transformer TI is regarded as a short circuit, the voltage at the point a is positive, the voltage at the point C is negative, the voltage at two ends of the first capacitor C1 is Vac, and the voltage at the point C to the ground is approximately 0V; at this time, the voltage at the point b is negative, the voltage across the second capacitor C2 is Vab, the voltage to ground at the point b is the forward voltage drop of the second diode D2, and in this embodiment, the forward voltage drop of the second diode D2 is 0.6V, and then the operating voltage of the flash lamp is HV-0.6V.
Referring to fig. 2, when the Trigger signal Trigger of the flash is at high level, the switching tube TH1 is turned on transiently, at this time, the voltage at the point a is pulled down to 0V through the switching tube TH1, because the first capacitor C1 cannot be suddenly changed after being fully charged, the voltage to ground at the point C is-Vac, so that the N1 winding of the transformer T1 generates a voltage instantaneously changing, the 2 pin is negative, the 4 pin and the 2 pin of the winding N2 of the transformer TI are the same-name terminals, so that the N2 winding induces a high voltage with the voltage of Vac (N2/N1) positive to GND by the 4 pin, and the high voltage is output to the Trigger coil TR wound on the flash lamp for triggering the flash lamp by the high voltage.
Referring to fig. 2, the voltage doubler module 3 includes a second capacitor C2 and a second diode D2, and an output terminal of the charging module 1 is electrically connected to an anode of the second capacitor C2, and a cathode of the second capacitor C2 is electrically connected to an anode of the second diode D2. The positive pole of second diode D2 still electric connection is connected to the negative pole of flash tube, and the negative pole ground connection of second diode D2, and the negative pole of second diode D2 still electric connection is connected to the negative pole of main electric capacity EC1, and second diode D2 plays the effect of anti-reflux.
Referring to fig. 2, when the switching tube is turned off, the charging module 1 charges the second capacitor C2. When the flash tube is triggered, the switch tube TH1 is turned on. At this time, the charging power supply VC has completed charging the second capacitor C2, and since the second capacitor C2 cannot be suddenly changed after being fully charged, the voltage to ground at point b is-Vab, and at this time, the voltage across the flash lamp is: HV- (-Vab) =hv+vab. That is, at the moment when the voltage doubling module 3 is triggered by the Trigger signal Trigger, the voltage across the flash tube is the voltage HV of the main capacitor EC1 plus the voltage Vab across the second capacitor C2. The second capacitor C2 is selected to meet the requirement that Vab is approximately equal to HV after charging is completed, so that the voltage applied to the two ends of the flash lamp tube at the moment when the flash lamp tube is triggered is approximately 2HV and is 2 times that of the circuit in a steady state, the working voltage of the flash lamp tube can be improved under the condition that the main capacitor EC1 is not replaced, the normal working performance of the flash lamp tube is guaranteed to the greatest extent, and the cost is saved.
The implementation principle of the voltage doubling flash lamp tube circuit in the embodiment of the application is as follows: the high-voltage triggering of the flash lamp tube is realized through the high-voltage triggering module 2, and then the doubling of the working voltage of the flash lamp tube is realized through the doubling module 3; the voltage doubling module 3 has a relatively simple structure, realizes the improvement of the working voltage of the flash lamp tube under the condition of not replacing the main capacitor EC1, and saves the cost.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides a doubly press flash tube circuit which characterized in that: the high-voltage power supply comprises a flash lamp tube, a main capacitor EC1, a charging module (1), a high-voltage trigger module (2) and a voltage doubling module (3), wherein the output end of the charging module (1) is electrically connected to the input ends of the high-voltage trigger module (2) and the voltage doubling module (3) respectively; the high-voltage triggering module (2) is connected with a signal output end of an external control system by a controlled signal, and the high-voltage triggering module (2) is used for controlling the flash lamp tube; the negative electrode of the flash lamp tube is grounded through the voltage doubling module (3), and the voltage doubling module (3) is used for improving the voltage at two ends of the flash lamp tube.
2. The voltage doubling flash tube circuit according to claim 1, wherein: the voltage doubling module (3) comprises a second capacitor C2, the positive electrode of the second capacitor C2 is electrically connected to the output end of the charging module (1), and the negative electrode of the second capacitor C2 is electrically connected to the negative electrode of the flash lamp tube.
3. The voltage doubling flash tube circuit according to claim 2, wherein: the voltage doubling module (3) further comprises a second diode D2, the positive electrode of the second diode D2 is electrically connected to the negative electrode of the second capacitor C2, and the negative electrode of the second diode D2 is grounded.
4. The voltage doubling flash tube circuit according to claim 1, wherein: the high-voltage triggering module (2) comprises a first capacitor C1, a transformer T1, a triggering coil TR and a switching tube TH1, wherein a control end of the switching tube TH1 is connected to a signal output end of the external control system in a signal manner; the output end of the charging module (1) is electrically connected to the positive electrode of the first capacitor C1, the negative electrode of the first capacitor C1 is electrically connected to the 1 pin of the N1 winding in the transformer T1, the 2 pin of the N1 winding in the transformer T1 is electrically connected to the 3 pin of the N2 winding in the transformer T1, the 4 pin of the N2 winding in the transformer T1 is electrically connected to the trigger coil TR, and the trigger coil TR is used for triggering the flash lamp tube.
5. The voltage doubling flash tube circuit of claim 4, wherein: the switch tube TH1 is arranged as a unidirectional silicon controlled rectifier.
6. The voltage doubling flash tube circuit according to claim 1, wherein: the charging module (1) comprises a charging power supply VC and a first diode D1, wherein the anode of the first diode D1 is electrically connected to the output end of the charging power supply VC, and the cathode of the first diode D1 is electrically connected to the input ends of the high-voltage triggering module (2) and the voltage doubling module (3).
7. The voltage doubling flash tube circuit of claim 6, wherein: the charging module (1) further comprises a first resistor R1, wherein the first resistor R1 is connected in series between the output end of the charging power supply VC and the anode of the first diode D1.
8. The voltage doubling flash tube circuit of claim 7, wherein: the charging module (1) further comprises a switch L1, wherein the switch L1 is connected in series between the charging power supply VC and the first resistor R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321562523.6U CN220401997U (en) | 2023-06-17 | 2023-06-17 | Voltage doubling flash lamp tube circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321562523.6U CN220401997U (en) | 2023-06-17 | 2023-06-17 | Voltage doubling flash lamp tube circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220401997U true CN220401997U (en) | 2024-01-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321562523.6U Active CN220401997U (en) | 2023-06-17 | 2023-06-17 | Voltage doubling flash lamp tube circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220401997U (en) |
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2023
- 2023-06-17 CN CN202321562523.6U patent/CN220401997U/en active Active
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