CN2852520Y - Multifunctional universal three-terminal switch power supply module - Google Patents
Multifunctional universal three-terminal switch power supply module Download PDFInfo
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- CN2852520Y CN2852520Y CN 200520135579 CN200520135579U CN2852520Y CN 2852520 Y CN2852520 Y CN 2852520Y CN 200520135579 CN200520135579 CN 200520135579 CN 200520135579 U CN200520135579 U CN 200520135579U CN 2852520 Y CN2852520 Y CN 2852520Y
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- circuit
- resistance
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- power supply
- capacitor
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Abstract
The utility model relates to a multifunctional universal three-terminal switch power supply module which comprises an integrated oscillatory circuit, a switch circuit, a voltage regulating and sampling circuit, a power supply circuit, a switch off controlling circuit, a negative feedback circuit, an outer controlling and voltage regulating circuit and an over current protecting circuit. The utility model has the advantages that the servicing work of various small-sized switch power supplies is simplified and convenient, wire connections are few when the utility model is serviced, and servicing time is saved greatly. The utility model can be suitable for the service of various switch power supplies in equipment, such as color televisions, DVD, satellite receivers, facsimile apparatuses, chargers, etc. The utility model can also realize functions of the outer control voltage regulating, voltage stabilization, remote control closedown, etc., and simultaneously the utility model also has an over current protecting function.
Description
Technical field
The utility model relates to a kind of multifunctional universal three-terminal switch power module, and part uses as an alternative in the maintenance of the Switching Power Supply of electric equipments such as colour TV, VCD, satellite receiver, facsimile machine, offset press.
Background technology
Chinese patent discloses a kind of " Switching Power Supply general purpose module " (ZL200420016286.4), and it is made up of oscillating circuit, drive circuit, feedback circuit.It specifically has three embodiment, and first embodiment mainly substitutes STR5412,4211,4020, M11, tandem type power circuits such as M12, M15; Second embodiment is mainly used in single-ended flyback parallel connection type power circuit; The 3rd embodiment mainly substitutes the power circuit that STR6307,6309,6708,6709, shutdown back principal voltages such as 6601 are reduced to initial value 25%-40%, and some novel colour tv power supplies Switching Power Supply of adopting low frequency step-downs to shut down.The shortcoming of above-mentioned patent is that the model of its product is many, can not be general, and make troubles for the maintenance work people.In addition, its function is less, does not have the external control pressure regulation, turn-offs functions such as control, overcurrent protection; Wiring is also more during maintenance.
Summary of the invention
It is easy that technical problem to be solved in the utility model provides a kind of usage, and be applicable to a kind of multifunctional universal three-terminal switch power module that various switchette power supplys are general.
The utility model solves its technical problem and will adopt technical scheme as follows;
The utility model includes integrated oscillator circuit, switching circuit, pressure regulation sample circuit, power supply circuits, shutoff control, negative feedback and external control regulating circuit; The power end of integrated oscillator circuit is through an elementary end (2) of the switch transformer of the former machine Switching Power Supply of red line wiring termination of this module, the elementary other end (1) of the switch transformer of former machine Switching Power Supply connects+300V, the input of the output termination switching circuit of integrated oscillator circuit; One road output of switching circuit is connected with an elementary end (2) of the switch transformer of former machine Switching Power Supply through the red line terminals of this module, another road output of Switching Power Supply connects the input of integrated oscillator circuit through the pressure regulation sample circuit, and the Third Road output of switching circuit connects the power end of integrated oscillator circuit through power supply circuits; The green line terminals of this module are through turn-offing another input that control, negative feedback and external control regulating circuit connect integrated oscillator circuit; The input of another road output on/off control, negative feedback and the external control regulating circuit of pressure regulation sample circuit, the black line terminals of this module are earth terminal.
The utility model also includes current foldback circuit, and the four road output of switching circuit connects the control end of integrated oscillator circuit through the overcurrent protective circuit.
The beneficial effects of the utility model be the maintenance work that makes various switchette power supplys more simplify, convenient, during maintenance wiring few, can finish more changing jobs of refill-unit as long as connect 2-3 root line, saved maintenance time greatly; Maintenance applicable to the various Switching Power Supplies in the equipment such as colour TV, VCD, DVD, satellite receiver, colour display screen, facsimile machine, charger, offset press; Can realize functions such as external control pressure regulation, voltage stabilizing, remote-control closedown by the green line terminals.It also has overcurrent protection function simultaneously.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
By the embodiment shown in Fig. 1,2 as can be known, it includes integrated oscillator circuit, switching circuit, pressure regulation sample circuit, power supply circuits, shutoff control, negative feedback and external control regulating circuit; The power end of integrated oscillator circuit is through an elementary end 2 of the switch transformer of the former machine Switching Power Supply of red line wiring termination of this module, the elementary other end 1 of the switch transformer of former machine Switching Power Supply connects+300V, the input of the output termination switching circuit of integrated oscillator circuit; One road output of switching circuit is connected with an elementary end 2 of the switch transformer of former machine Switching Power Supply through the red line terminals of this module, another road output of Switching Power Supply connects the input of integrated oscillator circuit through the pressure regulation sample circuit, and the Third Road output of switching circuit connects the power end of integrated oscillator circuit through power supply circuits; The green line terminals of this module are through turn-offing another input that control, negative feedback and external control regulating circuit connect integrated oscillator circuit; The input of another road output on/off control, negative feedback and the external control regulating circuit of pressure regulation sample circuit, the black line terminals of this module are earth terminal.
Present embodiment also includes current foldback circuit, and the four road output of switching circuit connects the control end of integrated oscillator circuit through the overcurrent protective circuit.
The integrated oscillator circuit of present embodiment is by ic chip
1And peripheral cell resistance R
1, R
2, capacitor C
1-C
5Form ic chip
1Power end 7 pin successively through resistance R
1, the switch transformer B of the former machine Switching Power Supply of red line wiring termination
22 elementary ends, capacitor C
1Be connected on ic chip
17 pin and ground between, ic chip
1Earth terminal 5 pin with black line terminals ground connection.
The switching circuit of present embodiment is by field effect transistor BG
1, resistance R
3-R
5Form field effect transistor BG
1The control utmost point through resistance R
3Connect ic chip
1Output 6 pin, resistance R 4 is connected on field effect transistor BG
1The control utmost point and ground between, field effect transistor BG
1Drain electrode through red line wiring termination switch transformer B
2Elementary 2 ends, resistance R
5Be connected on field effect transistor BG
1Source electrode and ground between.
The pressure regulation sample circuit of present embodiment is by transformer B
1, rectifier diode D
1, capacitor C
7, C
8, resistance R
7-R
10, potentiometer RP
1Form transformer B
1Elementary line group L
1An end through capacitor C
7Meet field effect transistor BG
1Drain electrode, its other end ground connection; Transformer B
1Secondary winding L
3An end successively through rectifier diode D
1, resistance R
8, potentiometer RP
1, resistance R
10Ground connection, potentiometer RP
1Swing arm through resistance R
9Connect ic chip
1Input 2 pin, winding L
3Other end ground connection; Capacitor C
8With resistance R
7Be connected on rectifier diode D after the parallel connection
1Negative pole and ground between.
The power supply circuits of embodiment are by transformer B
1Elementary winding L
2, rectifier diode D
2, capacitor C
9, transistor BG
2, voltage stabilizing didoe DW, resistance R
11Form elementary line group L
2With L
1Series connection, the tie point ground connection of the two, elementary winding L
2The other end through rectifier diode D
2Meet transistor BG
2Collector electrode, voltage stabilizing didoe DW is connected on transistor BG
2Base stage and ground between, resistance R
11Be connected on transistor BG
2Base stage and collector electrode between, transistor BG
2Emitter connect ic chip
1Power end 7 pin; Capacitor C
9Be connected on rectifier diode D
2Negative pole and ground between.
The shutoff control of present embodiment, negative feedback and external control regulating circuit are by photoelectrical coupler BG
3, diode D
3, D
4, resistance R
12Form, the green line terminals of this module are successively through diode D
4, resistance R
12Meet photoelectrical coupler BG
3Input 2 pin, photoelectrical coupler BG
3Input 1 pin meet rectifier diode D
1Negative pole, photoelectrical coupler BG
3Output 3 pin connect ic chip
1Input 1 pin, photoelectrical coupler BG
3Output 4 pin ground connection; The green line terminals are through diode D
3Connect ic chip
1Input 1 pin.
The current foldback circuit of present embodiment is by resistance R
G, capacitor C
GForm resistance R
GWith capacitor C
GBe connected on field effect transistor BG after the series connection
1Source electrode and ground between, resistance R
6With capacitor C
6Node connect ic chip
1Control end 3 pin.
The operation principle of present embodiment is as follows:
After circuit was connected, the voltage of+300V was successively through switch transformer B
2Elementary, resistance R
1To C
1C is worked as in charging
1On voltage be charged to+during 16V, IC
1Starting of oscillation, IC
1The pulse of the about 20KHz of 6 pin output frequencies, this pulse is through R
3Add to field effect transistor BG
1The control utmost point, BG
1Drain D output high-frequency alternating voltage, wherein lead up to switch transformer B
2After, use for load through rectification, filtering again.Its another road output is through transformer B
1After supply pressure regulation sample circuit and power supply circuits respectively.In the pressure regulation sample circuit, B
1Secondary winding L
3The induced voltage at two ends, through D
1After the rectification, by potentiometer RP
1Add to IC
12 pin, again by IC
1After inside is amplified, is compared, control IC
1The width of 6 pin output pulse, thereby reach the purpose of voltage stabilizing, pressure regulation.In power supply circuits, transformer B
1Elementary winding L
2The voltage at two ends is through D
2After the rectification, again through BG
2Add to IC after the voltage stabilizing
1Power end 7 pin, make IC
1Persistent oscillation is gone down.
The effect of green line terminals is as follows:
(1) because IC
11 pin pass through D
3Connect the green line terminals, when green line terminals and black line connect under the effect of end at external circuit conducting, IC
11 pin current potential dragged down, when this current potential is lower than 1V, IC
1Failure of oscillation, i.e. telecontrolled cut.
When green line terminals and half conducting of black line terminals, IC
1The pulse duration of 6 pin output narrow down i.e. B
2The output voltage step-down.
(2) when green line terminals and half conducting of black line terminals, photoelectrical coupler BG
3Light-emitting diode have electric current to flow through, the electric current route of flowing through is: the electric current diode D that flows through successively
1, BG
3Light-emitting diode, R
14, D
4, green line terminals, black line terminals, L
3Form the loop, BG
3Sensitizing tube be in half conducting state, IC
11 pin current potential slightly dragged down, but be not less than 1V, IC
1Still can work, just B
2Output voltage reduce.At this moment, when output voltage raise for a certain reason, BG flowed through
3The electric current of light-emitting diode will increase BG
3The conducting degree of depth of sensitizing tube will deepen IC
11 pin current potential dragged down, output voltage reduces, i.e. BG
3Play the effect of negative feedback.
The operation principle of overcurrent protection is as follows:
As field effect pipe BG
1During overcurrent, R
5On voltage will be above 1V, this voltage passes through R
6Be fed to IC
13 pin, make IC
1Failure of oscillation, thus realize overcurrent protection.
Claims (8)
1, a kind of multifunctional universal three-terminal switch power module is characterized in that it includes integrated oscillator circuit, switching circuit, pressure regulation sample circuit, power supply circuits, shutoff control, negative feedback and external control regulating circuit; The power end of integrated oscillator circuit is through an elementary end (2) of the switch transformer of the former machine Switching Power Supply of red line wiring termination of this module, the elementary other end (1) of the switch transformer of former machine Switching Power Supply connects+300V, the input of the output termination switching circuit of integrated oscillator circuit; One road output of switching circuit is connected with an elementary end (2) of the switch transformer of former machine Switching Power Supply through the red line terminals of this module, another road output of Switching Power Supply connects the input of integrated oscillator circuit through the pressure regulation sample circuit, and the Third Road output of switching circuit connects the power end of integrated oscillator circuit through power supply circuits; The green line terminals of this module are through turn-offing another input that control, negative feedback and external control regulating circuit connect integrated oscillator circuit; The input of another road output on/off control, negative feedback and the external control regulating circuit of pressure regulation sample circuit, the black line terminals of this module are earth terminal.
2, multifunctional universal three-terminal switch power module according to claim 1 is characterized in that it also includes current foldback circuit, and the four road output of switching circuit connects the control end of integrated oscillator circuit through the overcurrent protective circuit.
3, multifunctional universal three-terminal switch power module according to claim 1 and 2 is characterized in that integrated oscillator circuit is by ic chip
1And peripheral cell resistance R
1, R
2, capacitor C
1-C
6Form ic chip
1Power end 7 pin successively through resistance R
1, the former machine Switching Power Supply of red line wiring termination switch transformer B
2Elementary (2) end, capacitor C
1Be connected on ic chip
17 pin and ground between, ic chip
1Earth terminal 5 pin with black line terminals ground connection.
4, the horizontal piece of multifunctional universal three-terminal switch power supply according to claim 3 is characterized in that switching circuit is by field effect transistor BG
1, resistance R
3-R
5Form field effect transistor BG
1The control utmost point through resistance R
3Connect ic chip
1Output 6 pin, resistance R 4 is connected on field effect transistor BG
1The control utmost point and ground between, field effect transistor BG
1Drain electrode through red line wiring termination switch transformer B
2Elementary (2) end, resistance R
5Be connected on field effect transistor BG
1Source electrode and ground between.
5, multifunctional universal three-terminal switch power module according to claim 4 is characterized in that the pressure regulation sample circuit is by transformer B
1, rectifier diode D
1, capacitor C
7, C
8, resistance R
7-R
10, potentiometer RP
1Form transformer B
1Elementary line group L
1An end through capacitor C
7Meet field effect transistor BG
1Drain electrode, its other end ground connection; Transformer B
1Secondary winding L
3An end successively through rectifier diode D
1, resistance R
8, potentiometer RP
1, resistance R
10Ground connection, potentiometer RP
1Swing arm through resistance R
9Connect ic chip
1Input 2 pin, winding L
3Other end ground connection; Capacitor C
8With resistance R
7Be connected on rectifier diode D after the parallel connection
1Negative pole and ground between.
6, multifunctional universal three-terminal switch power module according to claim 5 is characterized in that power supply circuits are by transformer B
1Elementary winding L
2, rectifier diode D
2, capacitor C
9, transistor BG
2, voltage stabilizing didoe DW, resistance R
11Form elementary line group L
2With L
1Series connection, the tie point ground connection of the two, elementary winding L
2The other end through rectifier diode D
2Meet transistor BG
2Collector electrode, voltage stabilizing didoe DW is connected on transistor BG
2Base stage and ground between, resistance R
11Be connected on transistor BG
2Base stage and collector electrode between, transistor BG
2Emitter connect ic chip
1Power end 7 pin; Capacitor C
9Be connected on rectifier diode D
2Negative pole and ground between.
7, the multifunctional universal three-terminal switch power module of stating according to claim 6 is characterized in that turn-offing control, negative feedback and external control regulating circuit by photoelectrical coupler BG
3, diode D
3, D
4, resistance R
12Form, the green line terminals of this module are successively through diode D
4, resistance R
12Meet photoelectrical coupler BG
3Input 2 pin, photoelectrical coupler BG
3Input 1 pin meet rectifier diode D
1Negative pole, photoelectrical coupler BG
3Output 3 pin connect ic chip
1Input 1 pin, photoelectrical coupler BG
3Output 4 pin ground connection; The green line terminals are through diode D
3Connect ic chip
1Input 1 pin.
8, according to the multifunctional universal three-terminal switch power module of claim 7, it is characterized in that current foldback circuit is by resistance R
6, capacitor C
6Form resistance R
6With capacitor C
6Be connected on field effect transistor BG after the series connection
1Source electrode and ground between, resistance R
6With capacitor C
6Node connect ic chip
1Control end 3 pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520135579 CN2852520Y (en) | 2005-12-16 | 2005-12-16 | Multifunctional universal three-terminal switch power supply module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520135579 CN2852520Y (en) | 2005-12-16 | 2005-12-16 | Multifunctional universal three-terminal switch power supply module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2852520Y true CN2852520Y (en) | 2006-12-27 |
Family
ID=37586476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520135579 Expired - Fee Related CN2852520Y (en) | 2005-12-16 | 2005-12-16 | Multifunctional universal three-terminal switch power supply module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2852520Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404455B (en) * | 2008-11-03 | 2010-05-12 | 深圳市联德合微电子有限公司 | Three terminal type power switch power supply circuit |
-
2005
- 2005-12-16 CN CN 200520135579 patent/CN2852520Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404455B (en) * | 2008-11-03 | 2010-05-12 | 深圳市联德合微电子有限公司 | Three terminal type power switch power supply circuit |
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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: 20061227 Termination date: 20121216 |