CN2207686Y - Red infrared pulse light source - Google Patents
Red infrared pulse light source Download PDFInfo
- Publication number
- CN2207686Y CN2207686Y CN 94214782 CN94214782U CN2207686Y CN 2207686 Y CN2207686 Y CN 2207686Y CN 94214782 CN94214782 CN 94214782 CN 94214782 U CN94214782 U CN 94214782U CN 2207686 Y CN2207686 Y CN 2207686Y
- Authority
- CN
- China
- Prior art keywords
- control circuit
- circuit
- fluorescent tube
- output
- light source
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an infrared pulse light source belonging to the technical field of electric illumination, which is composed of luminescent devices, a charging circuit, a triggering circuit and a control circuit, wherein, an infrared flash lamp is charged by a positive half cycle of commercial alternating current, and the discharge of an infrared flash lamp set can be triggered by the circulation of the control circuit on a negative half cycle of the commercial alternating current. The utility model has the advantages of low cost, big horsepower, rapid charging speed, high reliability, etc., which is widely used in field of night camera chains, snooperscopes, etc.
Description
The utility model belongs to the electric lighting technical field, particularly a kind of pulse infrared light source.
The infrared light supply of present domestic use has two kinds, a kind of be with infrarede emitting diode as light source, its power is often very little, another kind is to form infrared light supply with general lighting lamp or flash shield with infrared filter, its shortcoming is a continuous illumination lamp heating rapid wear, and the flashlight charging time is oversize.
The purpose of this utility model be to provide a kind of cheaply, powerful fast-pulse infrared light supply.
The utility model is made up of luminescent device, charge circuit, triggering loop and control circuit.The input termination alternating current 220V power supply of charge circuit, the input on road is beamed back in the output contact of charge circuit, the positive and negative electrode of fluorescent tube connects the positive and negative end of charging capacitor respectively, the output on road is beamed back in the trigger electrode contact of fluorescent tube, control circuit input termination 220V AC power, the input on road is beamed back in the output contact of control circuit.
Luminescent device is that many identical common flash lamp tubes are combined, and cover is with infrared filter.
Every fluorescent tube connects a cover charge circuit and a cover triggering loop, and charge circuit comprises a rectifier diode and an electrochemical capacitor; Trigger the loop and comprise two resistance, an electric capacity, a step-up pulse transformer and a controllable silicon.
Control circuit is made up of AC power phase-detection loop, variable connector, frequency divider and circulating register and differential circuit.
Detecting the loop is made up of two resistance, a diode and an optocoupler.Optocoupler output connects the input of frequency divider.The output of frequency divider is received (can be a pair of normally opened contact of relay) on the switch through variable connector.The switch other end is received the input end of clock of shift register.Four output termination NOR gate of shift register, the output of NOR gate is received the serial data input that device is posted in displacement.Five outputs of shift register are received the triggering loop of corresponding fluorescent tube respectively through the differential circuit that is made of resistance and electric capacity.
Below in conjunction with accompanying drawing the utility model is described further.
Accompanying drawing is an electrical schematic diagram of the present utility model.
The input termination alternating current 220V power supply of charge circuit, the input on road is beamed back in the output contact of charge circuit, the positive and negative electrode of fluorescent tube connects the positive and negative end of charging capacitor respectively, the output on road is beamed back in the trigger electrode contact of fluorescent tube, control circuit input termination 220V AC power, the input that triggers the loop is received in the output of control circuit.
As shown in drawings, by fluorescent tube, charge circuit and triggering loop built-up circuit 1, its charge circuit connects the 220V AC power, is made up of diode D2 and electrochemical capacitor C1; Trigger the loop and meet electrochemical capacitor C1, be made up of resistance R 3, R4, capacitor C 2, transformer T1 and controllable silicon SCR 1, its output connects the trigger electrode of fluorescent tube; The positive pole of fluorescent tube connects the positive pole of electrochemical capacitor C1, the minus earth of fluorescent tube.Square frame the 2,3,4, the 5th in the accompanying drawing is with circuit 1 identical circuit.
Detecting the loop is made up of resistance R 1, R2, diode D1 and photoelectrical coupler 4N30.Come then the optocoupler output low level when exchanging negative half period; The output of frequency divider 74393 changes, and according to the set condition of variable connector DS, the output of frequency divider is received K switch 1(or relay 2 adhesives this moment through variable connector), receive 8 ' end CLK of 74164,74164 carry out shifting function.
74164 3 ', 4 ', 5 ', 6 ' termination NOR gate 7425, the serial data input 1 of its output 6 ' receive 74164 ' and 2 ', be used for providing 74164 initial condition.74164 output 11 ' (with 74164 3 ', 4 ', 5 ', 6 ' usage is identical) receive through differential circuit R, C on the trigger electrode of controllable silicon SCR 1 in triggering loop of corresponding fluorescent tube.If high level then triggers the loop conducting, electric current makes the fluorescent tube trigger electrode produce high pressure through the former limit of capacitor C and stepup transformer T1, the fluorescent tube flash of light.Along with the generation of cyclic shift, these five fluorescent tube circulation discharge flashes of light.
The utility model utilizes the positive half cycle of electric main to the charging of infrared flashlight group, and triggers the discharge of infrared flashlight group at the negative half period of civil power by the control circuit circulation. Has following technique effect: after the controlled triggering of every fluorescent tube of infrared flashlight group, in 1ms, discharge thousands of watts power; Charging rate is fast, and flashing speed can be glistened 50 times in one second by external setting-up, each fluorescent tube periodic duty in the flash lamp group, reliability height. Because simple in structure, the utility model cost is very low.
Claims (1)
1, a kind of pulsed red source, it is characterized in that: it is by luminescent device, charge circuit, triggering loop and control circuit are formed, the input termination alternating current 220V power supply of charge circuit, the input on road is beamed back in the output contact of charge circuit, and the positive and negative electrode of fluorescent tube connects the positive and negative end of charging capacitor respectively, and the output on road is beamed back in the trigger electrode contact of fluorescent tube, control circuit input termination 220V AC power, the road input is beamed back in the output contact of control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94214782 CN2207686Y (en) | 1994-06-04 | 1994-06-04 | Red infrared pulse light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94214782 CN2207686Y (en) | 1994-06-04 | 1994-06-04 | Red infrared pulse light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207686Y true CN2207686Y (en) | 1995-09-13 |
Family
ID=33830958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94214782 Expired - Fee Related CN2207686Y (en) | 1994-06-04 | 1994-06-04 | Red infrared pulse light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207686Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730362B (en) * | 2008-10-27 | 2013-02-20 | 佛山普立华科技有限公司 | Flash lamp control circuit |
-
1994
- 1994-06-04 CN CN 94214782 patent/CN2207686Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730362B (en) * | 2008-10-27 | 2013-02-20 | 佛山普立华科技有限公司 | Flash lamp control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |