CN204046200U - Comprise the electronic equipment of high-voltage load - Google Patents
Comprise the electronic equipment of high-voltage load Download PDFInfo
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- CN204046200U CN204046200U CN201420185297.9U CN201420185297U CN204046200U CN 204046200 U CN204046200 U CN 204046200U CN 201420185297 U CN201420185297 U CN 201420185297U CN 204046200 U CN204046200 U CN 204046200U
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- power supply
- electronic equipment
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- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000005286 illumination Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of electronic equipment comprising high-voltage load, comprises DC power supply, is indirectly connected to this DC power supply and the power-actuated integrated circuit provided by this DC power supply and be connected to this integrated circuit and the load controlled by this integrated circuit.This electronic equipment also comprises: voltage multiplie; This voltage multiplie is connected to DC power supply and integrated circuit, and is suitable for the primary voltage of DC power supply being carried out boosting and obtains the first voltage with drive integrated circult; High-voltage converter; This high-voltage converter is connected to DC power supply and described load, and is suitable for being carried out by the primary voltage of DC power supply boosting to obtain load described in the second voltage driven; And voltage multiplie and high-voltage converter independent work each other.The utility model provides the voltage of enough drive integrated circults while the quantity reducing battery, monoenergetic does not enough make the Supported Speedlights volume in the utility model miniaturized, the more important thing is the weight alleviating photoflash lamp entirety, make photographer carry photoflash lamp go out work time can be more easily comfortable.
Description
Technical field
The utility model relates to the electronic equipment that a kind of inside comprises high-voltage load, particularly a kind of portable electronic device being provided large intensity illumination by high-voltage charging.
Background technology
Photoflash lamp a kind of is subject to widely used auxiliary implement in photography, and it often arranges in pairs or groups because of providing the light of large intensity to illuminate the object that is taken and uses together with camera itself.Common photoflash lamp type comprises the built-in photoflash lamp of fixed and flashing light, the camera of being powered by fixed power source and is external in the mobile photoflash lamp etc. in camera.Wherein, be no matter that camera is built-in or be external in the photoflash lamp of camera, all need the power supply depending on movement, the lithium battery of such as camera itself or the built-in dry cell etc. of photoflash lamp.Therefore often in internal configurations, booster circuit uses for photoflash lamp so that the cell voltage of low pressure is promoted to instantaneous high pressure photoflash lamp.
In the photoflash lamp in modern times, except this basic luminous component of flash tube, often further provided with microcontroller or other integrated circuit.Such control circuit can make photoflash lamp to carry out more complicated operation, and the control command such as sent itself by transfer wire according to camera provides illumination etc.But in the photoflash lamp of built-in general dry battery, such microcontroller or other control circuit itself also need the direct voltage of certain amplitude with work.And the voltage provided due to single battery is limited, multiple batteries is needed to connect the driving voltage provided required for integrated circuit.Such configuration not only makes the size of photoflash lamp need to expand to hold more piece dry cell, and too increases the weight of photoflash lamp entirety, thus make Camera crews carry photoflash lamp go out operation time very not convenient.
Summary of the invention
Therefore, embodiment of the present utility model provides the camera flash-light of improvement, thus overcomes or at least alleviate above-mentioned technical problem.
In first of the present utility model, provide a kind of electronic equipment comprising high-voltage load, comprise DC power supply, be indirectly connected to this DC power supply and the power-actuated integrated circuit provided by this DC power supply and be connected to this integrated circuit and the load controlled by this integrated circuit.This electronic equipment also comprises: voltage multiplie, and this voltage multiplie is connected to DC power supply and integrated circuit, and is suitable for the primary voltage of DC power supply being carried out boosting and obtains the first voltage with drive integrated circult; High-voltage converter, this high-voltage converter is connected to DC power supply and described load, and is suitable for being carried out by the primary voltage of DC power supply boosting to obtain load described in the second voltage driven; And voltage multiplie and high-voltage converter independent work each other.
Preferably, this voltage multiplie comprises voltage boosting dc/direct current transducer, and this voltage boosting dc/direct current transducer has the input being connected to DC power supply and the output being connected to integrated circuit.
In addition, preferably voltage boosting dc/direct current transducer also comprises built-in synchronous rectifier.
On the other hand, high-voltage converter can preferably include high direct voltage inverter; Described high-voltage load is flash tube; High direct voltage inverter is connected to DC power supply and primary voltage is converted to the second voltage driving flash tube.
Most preferably, described second voltage is more than 100V.
In further embodiment, electronic equipment also comprises external interface, and described integrated circuit is connected to this external interface and from this external interface reception control signal to realize control to described electronic equipment.
In another embodiment, described DC power supply is two joint AA batteries, and described primary voltage is 3V, and described first voltage is 5V.
Or described first voltage is adjustable.
In one embodiment, described electronic equipment also comprises the low-voltage load being different from described high-voltage load, this low-voltage load without described high-voltage converter directly drive by described DC power supply.
Preferably, described low-voltage load is auxiliary focusing lamp.
In certain embodiments, described electronic equipment is the Supported Speedlights for camera.
Therefore, execution mode of the present utility model provides many advantages.One of them is exactly the voltage doubling rectifing circuit owing to employing battery supply, therefore being 1.5 volts only by two joint normal voltages, battery just can provide the voltage of the 5V Vcc required for microcontroller, instead of as photoflash lamp of the prior art, needs use 4 to save same standard battery could meet this demand.By reducing the quantity of battery, monoenergetic does not enough make the Supported Speedlights volume in the utility model miniaturized, the more important thing is the weight alleviating photoflash lamp entirety, make photographer carry photoflash lamp go out work time can be more easily comfortable.
Accompanying drawing explanation
Can do further to understand to performance of the present utility model and advantage with reference to the remaining part of this specification and accompanying drawing; In these accompanying drawings, the label of same assembly is identical.In some cases, son mark is placed in after certain label and hyphen to represent one of them of many similar component.When mentioning certain label but do not write some existing son marks especially exactly, just refer to all these similar assemblies.
Fig. 1 a illustrates the stereogram of the photoflash lamp of the be external in camera according to first embodiment of the present utility model, and now photoflash lamp lamp holder is folded state.
Fig. 1 b illustrates the schematic diagram of another state of the photoflash lamp in Fig. 1 a, and now photoflash lamp lamp holder is deployed condition.
Fig. 2 a photoflash lamp illustrated in Fig. 1 a is in front view during described photoflash lamp lamp holder folded state.
Fig. 2 b illustrates the rearview of the photoflash lamp in Fig. 2 a.
Fig. 2 c illustrates the top view of the photoflash lamp in Fig. 2 a.
Fig. 2 d illustrates the bottom view of the photoflash lamp in Fig. 2 a.
Fig. 2 e illustrates the left view of the photoflash lamp in Fig. 2 a.
Fig. 2 f illustrates the right view of the photoflash lamp in Fig. 2 a.
Fig. 3 shows the Supported Speedlights internal circuit schematic diagram according to an embodiment of the present utility model
Fig. 4 is the enlarged drawing of voltage doubling rectifing circuit part in the circuit diagram of Fig. 3.
Fig. 5 is the enlarged drawing of the circuit diagram mesohigh circuit part of Fig. 3.
Fig. 6 shows the method flow diagram of the battery-operated Supported Speedlights according to an embodiment of the present utility model.
Embodiment
Embodiment of the present utility model employs the voltage doubling rectifing circuit of battery to promote the output voltage of battery, thus can drive with the battery of lesser amt the integrated circuit being similar to microcontroller.Can other different benefit of providing of apparent each embodiment of the present utility model and advantage from following describing.
First see Fig. 1 a and Fig. 1 b, the photoflash lamp being external in camera in one embodiment described by the utility model comprises lamp holder 22, lamp body 26, is connected to the pivot device 24 between lamp holder 22 and lamp body 26, the auxiliary focusing lamp 20 be arranged on lamp body, be positioned at the hot shoe interface 28 bottom lamp body and be positioned at the flash tube (not shown) of lamp holder 22.Wherein, shown in Fig. 1 a and Fig. 1 b is work as the schematic diagram that lamp holder 22 is in two diverse locations relative to lamp body 26.Due to the existence of pivot device 24, lamp holder 22 is pivotally connected with lamp body 26, and therefore lamp holder 22 can rotate in an angular range preset relative to lamp body 26.This angular range is determined by the geometry of adjacent part complementation between lamp holder and lamp body, as well known to those skilled in the art, is not therefore described in detail at this.Lamp holder 22 is in fig 1 a in folded state, and now the volume of photoflash lamp entirety is minimum, and the irradiation of lamp holder 22 is towards the dead ahead of photoflash lamp.Lamp holder 22 is in Figure 1b in deployed condition, and now the irradiation of lamp holder 22 is relative to the front upper place of lamp body 26 towards photoflash lamp, therefore can carry out abundant illumination in response to the object diverse location will taking the photograph bat to it.
Focusing auxiliary lamp 20 is located at the front of lamp body 26, and it is same or similar with the direction of illumination of lamp holder 22 haply, therefore when illumination deficiencies such as such as dark scenes, focusing auxiliary lamp 20 continuous light of appropriateness can be provided so that camera internal the optical focusing assembly identification depth of field and focus.
Hot shoe interface 28 is positioned at the bottom of lamp body 26, and the photoflash lamp therefore described in figure is suitable for the top being erectly installed to camera, and to extend out (not shown) from camera body.As known to those skilled in the art, the shape of hot shoe interface 28 and electrical contact specification can carry out different designs according to the brand of the camera that will be external to, its hot shoe interface specification or international interface specification etc.Such hot shoe interface as the external interface of photoflash lamp, from the reception control signal of such as camera own to realize control to photoflash lamp.
Fig. 2 a-2b shows the plan view of photoflash lamp different directions in Fig. 1 a and 1b.Especially, the structure of this photoflash lamp is shown in figure 2b.At the back portion of photoflash lamp, the Position Approximate indicated by arrow 30 is battery compartment 30, and it is used for the dry cell of placement standard, such as No. 5 alkaline batteries.In the side of battery compartment 30, there is openable battery door 36, show the clearest in Fig. 2 e.User can from being installed to photoflash lamp by battery here or being taken out.At the back side of photoflash lamp, also there is flash generator switch 32, and flashing trafficator 34.Whether flashing trafficator 34 is used to indicate flashlight charging and completes, thus user can carry out flashing action next time.Alternatively, flashing trafficator also can integrated keypress function, can activate photoflash lamp immediately, such as, carry out the use of testing when user presses flashing trafficator 34, and does not need the instruction of waiting for that camera is transmitted by hot shoe interface.
Next, illustrate the photoflash lamp internal circuit diagram according to an embodiment of the present utility model in figure 3, comprising microcontroller 58, battery and switching circuit 50, voltage doubling rectifing circuit 52, high voltage conversion circuit 54 and hot shoe junction block 56.Wherein, battery and switching circuit 50 comprise the two joint 1.5V dry cells loading photoflash lamp, and are connected to foregoing flash generator switch.When mains switch is closed, battery and switching circuit 50 provide primary voltage as the DC power supply of photoflash lamp.This primary voltage is the 3V that two batteries are in series in the embodiment shown in fig. 3, and this is the voltage provided under the state being all full electricity in two batteries.If wherein a batteries or two joints are not full electricity, so their voltage of joining together to provide is likely lower than 3V.
Then battery and switching circuit 50 are connected respectively to voltage doubling rectifing circuit 52 and high voltage conversion circuit 54.Voltage doubling rectifing circuit 52 and then be connected to microcontroller 58.That is, microcontroller 58 is connected to battery and switching circuit 50 and the driven by power provided by this DC power supply indirectly.In addition, the output of high voltage conversion circuit 54 is connected to high-voltage load, is shown as flash tube 62 in figure 3.Flash tube 62 is also connected to microcontroller 58 and is controlled by this microcontroller 58 on the other hand.When receiving the control signal that microcontroller 58 sends, flash tube 62 can be triggered flash of light.In addition, photoflash lamp also comprises the low-voltage load being different from high-voltage load as shown in Figure 3, in this case foregoing auxiliary focusing lamp 60.The voltage that this auxiliary focusing lamp 60 is directly provided by described battery and switching circuit 50 without high voltage conversion circuit 54 drive, continue but the little floor light of intensity for providing.
On the other hand, as what clearly show in Fig. 4, voltage doubling rectifing circuit 52, as the voltage multiplie of DC power supply, is connected to the output V of battery and switching circuit 50
bATand the power input V of microcontroller
cCbetween, and be suitable for that the primary voltage of battery and switching circuit 50 is carried out boosting and obtain the first voltage to drive microcontroller.Voltage doubling rectifing circuit 52 shown in Fig. 4 comprises voltage boosting dc/direct current transducer U1, and the input of this transducer U1 is connected to V
bATand output is connected to V
cC, the namely power supply input of microcontroller.In addition, this voltage boosting dc/direct current transducer U1 also comprises built-in synchronous rectifier, therefore when without the need to external Schottky diode, just can complete the rectification work to voltage.Preferably, this voltage boosting dc/direct current transducer can receive a lower direct voltage input, and such as 0.8V-3V, the first voltage that then acquisition one is higher is to drive microcontroller.Preferably, this first voltage is the 5V voltage of standard, is used for driving the microcontroller of CMOS technology.Such as, but voltage boosting dc/direct current transducer also can provide adjustable first voltage alternatively, in the scope of 3.3V to 5.5V.Such adjustment can have been come by the resistance changing voltage boosting dc/direct current transducer external.
On the other hand, as what clearly show in Fig. 5, high voltage conversion circuit 54 is connected to battery and switching circuit 50 and flash tube 62.This high voltage conversion circuit 54 is suitable for being carried out by the primary voltage that battery and switching circuit 50 provide boosting to obtain the second voltage driven flash tube 62.High voltage conversion circuit 54 and voltage doubling rectifing circuit 52 independent work each other.This high voltage conversion circuit 54 comprises high direct voltage inverter, comprises some electric capacity, resistance, oscillator and transformer.The primary voltage of battery input, by oscillating circuit and transformer boost, then stores energy in high-voltage capacitance.The moment needed, high-voltage capacitance release high-tension electricity to the inert gas in flash tube, thus makes it send light source.Such high pressure converting circuit structure is well-known to those skilled in the art, does not repeat them here.Preferably, this second voltage is more than 100V, although the puncture voltage eventually passing through capacitive accumulation may up to several kilovolts.
In another, a kind of method that driving comprises the photoflash lamp of high-voltage load such as flash tube is described of the present utility model.The step of the method can see Fig. 6.First, in step 100, the DC power supply of such as dry cell etc. provides a primary voltage.As mentioned above, the primary voltage that two joint 1.5V dry cells provide is 3V.Then, primary voltage obtains boosting and obtains the first voltage through voltage doubling rectifing circuit in a step 102, and such as preferred 5V is used for driving the microcontroller of CMOS technology.Or voltage doubling rectifing circuit described above also can be adjustable in a fixed range.Voltage at step 104 through boosting is used for driving microcontroller, and so microcontroller can respond extraneous control signal, photoflash lamp testing button as escribed above, or passes through the control signal from camera of hot shoe interface.In step 106, primary voltage is converted to decades of times or hundreds of times of the second voltages higher than primary voltage through high voltage conversion circuit, and this second voltage realizes flash effect for driving flash tube.In step 108, according to instruction and the switching action of microcontroller, the second voltage is provided to flash tube to pull the trigger flash tube to provide flash effect in the scheduled time.
Therefore, after describing several embodiment, those skilled in the art will recognize that different changes, other structure, equivalent, can be used without and can deviate from essence of the present utility model.Accordingly, above description should not be regarded as the restriction to the determined the utility model scope of such as following claim.
During superincumbent embodiment is described in detail, the microcontroller that the integrated circuit used in photoflash lamp encapsulates for CMOS.But, those skilled in the art unambiguously can understand the integrated circuit of other type, comprise the types such as BGA, FPGA, VLSI, can to be used for being used in photoflash lamp and drive by described voltage doubling rectifing circuit, as long as these integrated circuits can be used in carrying out communicating with camera and control the light-emission operation of flash tube.
In addition, except photoflash lamp presented hereinbefore, the utility model can also be used for the electronic equipment of other type, and more such as but other uses powered battery needs the equipment of drive integrated circult.These equipment, when needs ensure to provide the direct voltage of integrated circuit, also can be applied the voltage doubling rectifing circuit in the utility model and be boosted by the voltage of the battery of limited quantity.
Claims (11)
1. one kind comprises the electronic equipment of high-voltage load, comprise DC power supply, be indirectly connected to this DC power supply and the power-actuated integrated circuit provided by this DC power supply and be connected to this integrated circuit and the load controlled by this integrated circuit, it is characterized in that: this electronic equipment also comprises:
Voltage multiplie; This voltage multiplie is connected to described DC power supply and described integrated circuit, and is suitable for the primary voltage of described DC power supply being carried out boosting and obtains the first voltage to drive described integrated circuit;
High-voltage converter; This high-voltage converter is connected to described DC power supply and described load, and is suitable for being carried out by the primary voltage of described DC power supply boosting to obtain load described in the second voltage driven; And
Described voltage multiplie and described high-voltage converter independent work each other.
2. electronic equipment as claimed in claim 1, is characterized in that: described voltage multiplie comprises voltage boosting dc/direct current transducer, and this voltage boosting dc/direct current transducer has the input being connected to described DC power supply and the output being connected to described integrated circuit.
3. electronic equipment as claimed in claim 2, wherein voltage boosting dc/direct current transducer also comprises built-in synchronous rectifier.
4. electronic equipment as claimed in claim 1, is characterized in that: described high-voltage converter comprises high direct voltage inverter; Described high-voltage load is flash tube; Described high direct voltage inverter is connected to described DC power supply and described primary voltage is converted to the second voltage driving described flash tube.
5. electronic equipment as claimed in claim 4, wherein said second voltage is more than 100V.
6. as the electronic equipment in claim 1-5 as described in any, it is characterized in that: described electronic equipment also comprises external interface, described integrated circuit is connected to this external interface and from this external interface reception control signal to realize control to described electronic equipment.
7., according to the electronic equipment in claim 1-5 described in any, it is characterized in that described DC power supply is two joint AA batteries, described primary voltage is 3V, and described first voltage is 5V.
8., according to the electronic equipment in claim 1-5 described in any, it is characterized in that described first voltage is adjustable.
9., according to the electronic equipment in claim 1-5 described in any, also comprise the low-voltage load being different from described high-voltage load, this low-voltage load without described high-voltage converter directly drive by described DC power supply.
10. electronic equipment according to claim 9, wherein said low-voltage load is auxiliary focusing lamp.
11. according to the electronic equipment in claim 1-5 described in any, it is characterized in that described electronic equipment is the Supported Speedlights for camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185297.9U CN204046200U (en) | 2014-04-16 | 2014-04-16 | Comprise the electronic equipment of high-voltage load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185297.9U CN204046200U (en) | 2014-04-16 | 2014-04-16 | Comprise the electronic equipment of high-voltage load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204046200U true CN204046200U (en) | 2014-12-24 |
Family
ID=52246827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420185297.9U Expired - Lifetime CN204046200U (en) | 2014-04-16 | 2014-04-16 | Comprise the electronic equipment of high-voltage load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204046200U (en) |
-
2014
- 2014-04-16 CN CN201420185297.9U patent/CN204046200U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141224 |