CN203467021U - Flash lamp discharging circuit - Google Patents
Flash lamp discharging circuit Download PDFInfo
- Publication number
- CN203467021U CN203467021U CN201320504602.1U CN201320504602U CN203467021U CN 203467021 U CN203467021 U CN 203467021U CN 201320504602 U CN201320504602 U CN 201320504602U CN 203467021 U CN203467021 U CN 203467021U
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- CN
- China
- Prior art keywords
- relay
- circuit
- photoflash lamp
- discharge circuit
- lamp discharge
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model relates to a flash lamp discharging circuit. The circuit comprises a relay control circuit, a relay, an energy releaser and a main capacitor. The relay control circuit is connected with the relay and controls conduction or cut-off of the relay. The relay, the energy releaser and the main capacitor are sequentially connected so as to form a discharging loop. Through setting the discharging circuit on the flash lamp and setting the relay to control the conduction or cut-off of the discharging circuit, rapid discharging can be performed on the main capacitor and the flash lamp does not need to flash again. Usage of a user is convenient and an operation experience of a photographer is increased. Simultaneously, a photoelectric coupler is used to receive a control signal. A photoelectric isolation effect is good and an anti-interference capability is strong. A switch tube is simultaneously used to control the conduction or cut-off of the relay and a low current circuit is used to make a high-voltage circuit discharge so that instantaneous high-voltage discharging can be realized.
Description
Technical field
The utility model relates to flash light techniques field, relates in particular to a kind of discharge circuit of photoflash lamp.
Background technology
Photoflash lamp can send very strong light in a short period of time, is the photographic part of photosensitive, is used for the occasion that light is darker, and especially, in film studio, the effect that photoflash lamp plays is extremely important.
Photoflash lamp of the prior art comprises: power circuit, oscillating circuit, booster circuit, rectification circuit, charging circuit and flasher circuit, power circuit, oscillating circuit, booster circuit, rectification circuit, charging circuit and flasher circuit are sequentially connected.After power circuit is connected, utilize transistorized switching characteristic in oscillating circuit, form an intermittent oscillation, make alternating voltage of elementary acquisition of booster circuit, through booster circuit, boost, make the secondary acquisition of booster circuit be greater than the alternating voltage of 300V.Alternating voltage becomes direct voltage after rectification circuit rectification, and main capacitance is carried out to charging energy-storing.When flasher circuit is received triggering signal, trigger flashing flick of lamp, electric energy moment of storing in main capacitance is discharged and is converted into luminous energy by flash lamp tube, completes once flash of light.
Photoflash lamp electric discharge of the prior art is all to allow photoflash lamp glisten to realize conventionally, the guide number of so obvious increase photoflash lamp, the useful life of having reduced photoflash lamp.But iff main capacitance being discharged by switching tube and can not realizing instantaneous pressure and discharge, photographer is operated very inconvenient.
Utility model content
The purpose of this utility model is: for photoflash lamp electric discharge of the prior art, be all that photoflash lamp is glistened to realize, reduced the technical problem in photoflash lamp useful life, a kind of photoflash lamp discharge circuit is provided.Simultaneously another one object of the present utility model is to provide a kind of photoflash lamp discharge circuit of realizing instantaneous pressure electric discharge, make photoflash lamp needs electric discharge time time can realize instantaneous pressure electric discharge.
The purpose of this utility model realizes by following technical proposals:
A kind of photoflash lamp discharge circuit, it specifically comprises control relay circuit, relay, energy release and main capacitance, and described control relay circuit connects relay, the conducting of control relay or cut-off, described relay, energy release are sequentially connected with main capacitance, form discharge loop.By discharge circuit is set on photoflash lamp, and conducting or the cut-off of Control discharge circuit are set, have realized to main capacitance is carried out repid discharge and do not need photoflash lamp again to glisten, convenient for users to use, improved photographer's operating experience.
Further, above-mentioned control relay circuit comprises photoelectrical coupler, switching tube and magnetic coil, the output connecting valve pipe of described photoelectrical coupler, and described switching tube connects magnetic coil, described magnetic coil absorption relay, makes relay conducting or cut-off.By photoelectrical coupler reception control signal, photoelectricity isolation effect is good, and antijamming capability is strong, uses conducting or the cut-off of switch controlled relay simultaneously, adopts little current circuit to control high-tension circuit, makes it possible to realize instantaneous pressure electric discharge.Photoflash lamp flash of light required voltage is generally all very high, if directly adopting common switching tube to realize break-make obviously cannot satisfy the demand, and in the utility model, adopt relay to control break-make, and adopt magnetic coil to adsorb relay, thereby realize the control of little current circuit to high-tension circuit, realize instantaneous pressure electric discharge.
Further, above-mentioned switching tube is triode.Triode is through being usually used in the electronic component of switching function, realizes simply, and switch performance is good.
Further, above-mentioned photoelectrical coupler comprises light-emitting diode and phototriode, lumination of light emitting diode, and phototriode receiving optical signals is also converted to signal of telecommunication output.Adopt light-emitting diode and phototriode to realize the function of photoelectrical coupler, system realizes easily, and cost is low.
Further, the positive pole connection+3.3V voltage of above-mentioned light-emitting diode, the negative pole of light-emitting diode receives input signal.When the be less than+3.3V of voltage of input signal, lumination of light emitting diode, photoelectrical coupler work.Low-voltage adopts control signal just can realize, and system realizes simple, and cost is low.
Further, the base stage receiving optical signals of above-mentioned phototriode, is exported to the base stage of triode by the emitter of phototriode.Phototriode is realized the translation function of photoelectricity, finally the signal of telecommunication is exported to triode.
Further, above-mentioned control relay circuit also comprises diode, and the positive pole of described diode connects the tie point between magnetic coil and transistor collector, the negative pole connection+12V voltage of diode.Adopt diode to prevent that electric current is reverse, guarantee the safety of circuit.
Further, above-mentioned main capacitance comprises at least one electric capacity, and each Capacitance parallel connection forms main capacitance.A plurality of electric capacity is carried out to parallel connection, make main capacitance have enough energy to glisten and power to photoflash lamp.
Further, above-mentioned energy release is high-power resistance.High-power resistance is converted into heat energy by instantaneous pressure, realizes instantaneous pressure repid discharge, has met user's needs, photoflash lamp is not glistened and also realized the electric discharge of main capacitance.
By adopting above technical scheme, the utlity model has following beneficial effect: by discharge circuit is set on photoflash lamp, and conducting or the cut-off of Control discharge circuit be set, realized to main capacitance is carried out repid discharge and do not need photoflash lamp again to glisten, convenient for users to use, improved photographer's operating experience.By photoelectrical coupler reception control signal, photoelectricity isolation effect is good simultaneously, and antijamming capability is strong, uses conducting or the cut-off of switch controlled relay simultaneously, adopts little current circuit to control high-tension circuit, makes it possible to realize instantaneous pressure electric discharge.Photoflash lamp flash of light required voltage is generally all very high, if directly adopting common switching tube to realize break-make obviously cannot satisfy the demand, and in the utility model, adopt relay to control break-make, and adopt magnetic coil to adsorb relay, thereby realize the control of little current circuit to high-tension circuit, realize instantaneous pressure electric discharge.
Accompanying drawing explanation
Fig. 1 is particular circuit configurations figure of the present utility model.
Embodiment
Below in conjunction with Figure of description, describe embodiment of the present utility model in detail.
The utility model discloses a kind of photoflash lamp discharge circuit, it specifically comprises control relay circuit, relay, energy release, main capacitance, described control relay circuit connects relay, the conducting of control relay or cut-off, described relay, energy release are sequentially connected with main capacitance, form discharge loop.By discharge loop of the present utility model, electric weight in main capacitance is discharged, make the voltage on main capacitance through sparking, get back to the scope needing.
Further, above-mentioned control relay circuit comprises photoelectrical coupler, switching tube and magnetic coil, the output connecting valve pipe of described photoelectrical coupler, and described switching tube connects magnetic coil, described magnetic coil absorption relay, makes relay conducting or cut-off.The output of photoelectrical coupler inputs to switching tube, and the wire on switch controlled magnetic coil has electric current to flow through, thereby absorption relay makes it closed.
Further, the concrete circuit diagram of above-mentioned discharge circuit as shown in Figure 1.The pin 1 connection+3.3V voltage of photoelectrical coupler, pin 2 receives external signal, the input pin that pin 1 and pin 2 are photoelectrical coupler.Pin 4 is by the base stage of resistance connecting triode, and pin 5 is by connect+12V of resistance voltage, the output pin that pin 4 and pin 5 are photoelectrical coupler.The grounded emitter of triode, collector electrode connects one end of magnetic coil, other one end connection+12V voltage of magnetic coil.Access diode in the middle of the two ends of magnetic coil, the anodal connecting triode collector electrode of diode and the tie point between magnetic coil one end, diode cathode connects+12 voltages.Magnetic coil according to whether there being electric current, whether by determining to produce, adsorb or do not adsorb the terminal on relay by magnetic field, when a terminal voltage of magnetic coil is during lower than+12V, and generation current in magnetic coil, magnetic coil work, produces magnetic field, adsorbs relay.Now, relay conducting, relay, energy release and main capacitance form closed-loop path.Main capacitance is comprised of a plurality of Capacitance parallel connections, and after relay conducting, the voltage in main capacitance is heat energy by energy release by electric energy conversion, main capacitance electric discharge, the lower voltage on main capacitance.No person, does not have electric current to flow through in magnetic coil, do not adsorb the terminal of relay, and relay disconnects, the state of relay as shown in Figure 1, and now main capacitance does not access discharge loop.
Light-emitting diode and phototriode form photoelectrical coupler, and after lumination of light emitting diode, the base stage of phototriode receives light signal, is translated into the signal of telecommunication and is exported by collector electrode.The signal driver light-emitting diode of input, makes it to send the light of certain wavelength, is received and generation current, then export after further amplification by phototriode.This has just completed light to electric conversion.Because optical coupler input and output are isolated mutually, electric signal transmission has one-way, thereby has good electrical isolation capabilities and antijamming capability.
In photoelectrical coupler, the emitter of phototriode connects the base stage of triode by resistance, and in photoelectrical coupler, the collector electrode of phototriode is by connect+12V of resistance voltage.The grounded emitter of triode, collector electrode connects one end of magnetic coil, other one end connection+12V voltage of magnetic coil.Diode is also set simultaneously, makes circuit one-way conduction, the positive pole of diode connects the tie point between magnetic coil and transistor collector, the negative pole connection+12V voltage of diode.Mainly utilize the reverse cutoff performance of diode herein.
When the base current increase of triode, in the time of can not making collector current continue to increase, triode just enters saturation condition.After entering saturation condition, the collector electrode of triode will be very little with the voltage between emitter.When base current is 0, photoelectrical coupler is not worked, and transistor collector electric current is 0, and at this moment triode cut-off, does not have electric current to flow through in magnetic coil.When base current is larger, to such an extent as to triode is when saturated, is equivalent to switch closure.Now the collector electrode of triode is very little with the voltage between emitter, makes the two ends of magnetic coil produce pressure reduction, has electric current to flow through in magnetic coil, thus the conducting of absorption relay.
After relay conducting, relay, energy release and main capacitance form closed-loop path, and using high-power resistance as energy release, access, makes main capacitance and high-power resistance (energy release) form a closed-loop path, during current flowing resistance, convert electric energy to heat energy, electric main capacitance electric discharge.In this process, the terminal voltage of main capacitance declines gradually, when the terminal voltage of main capacitance drops to the terminal voltage value that equals setting, discharge circuit is disconnected the negative electrode pin input high level of light-emitting diode in photoelectrical coupler, main capacitance, in open-circuit condition, maintains existing constant in energy.
Now, light-emitting diode is not luminous, and phototriode can't detect light signal, emitter is output not, and triode cut-off, does not have electric current to flow through in magnetic coil, thereby can not continue to adsorb relay, relay disconnects, thereby main capacitance is broken from discharge loop.The utility model comes conducting or the cut-off of control relay by control relay circuit is set, make it possible to realize instantaneous pressure electric discharge.
Given coefficient and parameter in the above embodiments; be to provide to those skilled in the art and realize or use of the present utility model; the utility model does not limit and only gets aforementioned disclosed numerical value; in the situation that not departing from utility model thought of the present utility model; those skilled in the art can make various modifications or adjustment to above-described embodiment; thereby protection range of the present utility model do not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claims mention.
Claims (9)
1. a photoflash lamp discharge circuit, it is characterized in that specifically comprising control relay circuit, relay, energy release and main capacitance, described control relay circuit connects relay, the conducting of control relay or cut-off, described relay, energy release are sequentially connected with main capacitance, form discharge loop.
2. photoflash lamp discharge circuit as claimed in claim 1, it is characterized in that described control relay circuit comprises photoelectrical coupler, switching tube and magnetic coil, the output connecting valve pipe of described photoelectrical coupler, described switching tube connects magnetic coil, described magnetic coil absorption relay, makes relay conducting or cut-off.
3. photoflash lamp discharge circuit as claimed in claim 2, is characterized in that described switching tube is triode.
4. photoflash lamp discharge circuit as claimed in claim 3, is characterized in that described photoelectrical coupler comprises light-emitting diode and phototriode, lumination of light emitting diode, and phototriode receiving optical signals is also converted to signal of telecommunication output.
5. photoflash lamp discharge circuit as claimed in claim 4, is characterized in that the positive pole connection+3.3V voltage of described light-emitting diode, and the negative pole of light-emitting diode receives input signal.
6. photoflash lamp discharge circuit as claimed in claim 5, is characterized in that the base stage receiving optical signals of described phototriode, is exported to the base stage of triode by the emitter of phototriode.
7. photoflash lamp discharge circuit as claimed in claim 6, is characterized in that described control relay circuit also comprises diode, and the positive pole of described diode connects the tie point between magnetic coil and transistor collector, the negative pole connection+12V voltage of diode.
8. photoflash lamp discharge circuit as claimed in claim 7, is characterized in that described main capacitance comprises at least one electric capacity, and each Capacitance parallel connection forms main capacitance.
9. photoflash lamp discharge circuit as claimed in claim 8, is characterized in that described energy release is high-power resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320504602.1U CN203467021U (en) | 2013-08-19 | 2013-08-19 | Flash lamp discharging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320504602.1U CN203467021U (en) | 2013-08-19 | 2013-08-19 | Flash lamp discharging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203467021U true CN203467021U (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320504602.1U Expired - Fee Related CN203467021U (en) | 2013-08-19 | 2013-08-19 | Flash lamp discharging circuit |
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| Country | Link |
|---|---|
| CN (1) | CN203467021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031633A (en) * | 2020-01-09 | 2020-04-17 | Oppo广东移动通信有限公司 | Flash lamp driving circuit |
-
2013
- 2013-08-19 CN CN201320504602.1U patent/CN203467021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031633A (en) * | 2020-01-09 | 2020-04-17 | Oppo广东移动通信有限公司 | Flash lamp driving circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20180819 |
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| CF01 | Termination of patent right due to non-payment of annual fee |