CN202334347U - Three-stage adjustable imitation screen power supply - Google Patents
Three-stage adjustable imitation screen power supply Download PDFInfo
- Publication number
- CN202334347U CN202334347U CN2011204744671U CN201120474467U CN202334347U CN 202334347 U CN202334347 U CN 202334347U CN 2011204744671 U CN2011204744671 U CN 2011204744671U CN 201120474467 U CN201120474467 U CN 201120474467U CN 202334347 U CN202334347 U CN 202334347U
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- China
- Prior art keywords
- power supply
- imitation screen
- imitation
- screen power
- switches
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Abstract
The utility model relates to a three-stage adjustable imitation screen power supply, in particular to a power supply which is specially used for various scheduling imitation screens. The utility model has the technical scheme that the three-stage adjustable imitation screen power supply comprises a wiring terminal (1), a power supply transformer (2) and a rectifier bridge (3), wherein the wiring terminal is connected with the power supply transformer, the output of the power supply transformer is connected with the rectifier bridge, a power supply circuit is formed by capacitors, a current-limiting resistor, triodes, a voltage-regulator diode, silicon rectifier diodes, switches and a fuse, the switches and the silicon rectifier diodes are connected in parallel, the working of the silicon rectifier diodes is controlled through the switching on and off of the switches, and thus the output voltage of the power supply circuit is adjusted. The three-stage adjustable imitation screen power supply has the beneficial effects that the output voltage of the imitation power supply is adjusted by switching on and off the switches, three-stage adjustment of the imitation screen power supply can be realized, and thus a display device of the imitation screen has the display functions of bright, normal and dark. The three-stage adjustable imitation screen power supply has the characteristic of flexible use mode, is very suitable for imitation screens in various using fields and is an ideal imitation screen power supply.
Description
Technical field
The utility model relates to a kind of three grades of adjustable imitation screen power supplys, especially for being particularly useful for power supply used on the various Stimulated control screens.
Background technology
Imitation screen is the automation equipment of the indispensability of dispatching patcher, needs the field of dispatch control to obtain using widely at electric power system and other.Conventional analogue screen power supply does not possess the function of adjustment electric power output voltage.The subject matter that background technology exists is: can not change the imitation screen electric power output voltage according to user's request, realize the imitation screen display device bright, show slinkingly and show function.
The utility model content
The purpose of the utility model provides a kind of three grades of adjustable imitation screen power supplys; The output voltage of adjustment imitation screen power supply; Realize that three grades of imitation screen power supplys are adjustable; Make the imitation screen display have bright, normal, dark Presentation Function, be applicable to various fields of employment, solve the problems referred to above that background technology exists.
The technical scheme of the utility model is: a kind of three grades of adjustable imitation screen power supplys, comprise the binding post, power transformer, the rectifier bridge that are installed in the imitation screen power shell, and binding post connects power transformer, and power transformer output connects rectifier bridge.
Also be provided with the power circuit that electric capacity, current-limiting resistance, triode, voltage stabilizing didoe, silicon rectifier diode, switch and insurance constitute; The parallelly connected setting of said switch with silicon rectifier diode; Closing, dividing through switch; The work of control silicon rectifier diode, and then the output voltage of adjustment power circuit, the brightness demonstration of the imitation screen display device that realization is connected with power circuit changes.
Two switches and two parallelly connected settings of silicon rectifier diode; Have three kinds of states: two switches are closed simultaneously, open simultaneously, closure another open; Three kinds of states adjust three kinds of different output voltage; Realize that three grades of imitation screen power supplys are adjustable, make the imitation screen display device have bright, normal, dark Presentation Function.
The good effect of the utility model: through the output voltage that closes, switch-dividing is adjusted the imitation screen power supply, realize that three grades of imitation screen power supplys are adjustable, make the imitation screen display device have bright, normal, dark Presentation Function.The utlity model has occupation mode flexible technique characteristics, be very suitable for the imitation screen of various fields of employment, is a kind of desirable imitation screen power supply.
Description of drawings
Fig. 1 is the utility model embodiment sketch map;
Among the figure: binding post 1,4, power transformer 2, rectifier bridge 3, capacitor C 1, C2, current-limiting resistance R, triode T1, T2, voltage stabilizing didoe D1, silicon rectifier diode D2, D3, K switch, K1, K2, insurance FU.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further specified through embodiment.
A kind of three grades of adjustable imitation screen power supplys; Comprise the binding post 1, power transformer 2, rectifier bridge 3, electric capacity, current-limiting resistance, triode, voltage stabilizing didoe, silicon rectifier diode, switch and the insurance that are installed in the imitation screen power shell; Binding post connects power transformer; Power transformer output connects rectifier bridge, and electric capacity, current-limiting resistance, triode, voltage stabilizing didoe, silicon rectifier diode, switch and insurance constitute power circuit, the parallelly connected setting with silicon rectifier diode of said switch; Closing, dividing through switch; The work of control silicon rectifier diode, and then the output voltage of adjustment power circuit, the brightness demonstration of the imitation screen display device that realization is connected with power circuit changes.
Two K switch 1, K2 and two silicon rectifier diode D2, the parallelly connected setting of D3; Have three kinds of states: two switches are closed simultaneously, open simultaneously, closure another open; Three kinds of states adjust three kinds of different output voltage; Realize that three grades of imitation screen power supplys are adjustable, make the imitation screen display device have bright, normal, dark Presentation Function.
Execution mode more specifically: in Fig. 1; Binding post 1,4 provides the input and output of working power; K switch connects insurance FU and gives power transformer 2 inputs; Power transformer 2 outputs connect rectifier bridge 3, connect capacitor C 1, C2 voltage stabilizing, connect current-limiting resistance R, triode T1 and T2, voltage stabilizing didoe D1, silicon rectifier diode D2 and D3 and K switch 1 and K2.
Voltage stabilizing didoe D1 selects 12V for use; Triode T2 selects silicone tube (it is 0.7V that the silicone tube joint is pressed) for use.
1. when K switch 1 is closed, K switch 2 is fashionable, imitation screen power supply output 12V-0.7V=11.3V;
2. when K switch 1 is closed, K switch 2 minutes or K switch 1 minute, K switch 2 are fashionable, imitation screen power supply output 12V-0.7V+0.7V=12V;
3. when K switch 1 minute, K switch 2 timesharing, the imitation screen power supply is exported 12V-0.7V+0.7V+0.7V=12.7V.
In sum, through the output voltage that closes, switch-dividing (K1, K2) is adjusted the imitation screen power supply, be respectively 11.3V, 12V, 12.7V, realize that three grades of imitation screen power supplys are adjustable, make the imitation screen display device have bright, normal, dark Presentation Function.
Claims (2)
1. one kind three grades adjustable imitation screen power supplys is characterized in that comprising the binding post (1), power transformer (2), the rectifier bridge (3) that are installed in the imitation screen power shell, and binding post connects power transformer, and power transformer output connects rectifier bridge.
2. a kind of three grade adjustable imitation screen power supplys according to claim 1; It is characterized in that also being provided with the power circuit that electric capacity, current-limiting resistance, triode, voltage stabilizing didoe, silicon rectifier diode, switch and insurance constitute, the parallelly connected setting of said switch with silicon rectifier diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204744671U CN202334347U (en) | 2011-11-25 | 2011-11-25 | Three-stage adjustable imitation screen power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204744671U CN202334347U (en) | 2011-11-25 | 2011-11-25 | Three-stage adjustable imitation screen power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334347U true CN202334347U (en) | 2012-07-11 |
Family
ID=46446312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204744671U Expired - Fee Related CN202334347U (en) | 2011-11-25 | 2011-11-25 | Three-stage adjustable imitation screen power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334347U (en) |
-
2011
- 2011-11-25 CN CN2011204744671U patent/CN202334347U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20131125 |