CN204965319U - Notebook computer power - Google Patents
Notebook computer power Download PDFInfo
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- CN204965319U CN204965319U CN201520619614.8U CN201520619614U CN204965319U CN 204965319 U CN204965319 U CN 204965319U CN 201520619614 U CN201520619614 U CN 201520619614U CN 204965319 U CN204965319 U CN 204965319U
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- diode
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- transformer
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Abstract
The utility model discloses a notebook computer power, including transformer W, diode D1, inductance L1 and unidirectional thyristor RT1, the 220V alternating current is connected to transformer W primary side, and electric capacity C1, transient voltage suppression diode DW, diode D1's positive pole and diode D2's negative pole are connected to the one end of transformer W secondary end, and electric capacity C1's the other end, the other end, diode D3's positive pole and diode D4's the negative pole that transient voltage restraines diode DW are connected to the other end of transformer W secondary end. The utility model discloses notebook computer power not only simple structure, components and parts is few, and the cost of manufacture is low, uses three terminal regulator and triode to constitute voltage stabilizing module moreover, ensures output voltage's stability, has still set up overvoltage crowbar in the circuit simultaneously, therefore has the advantage of various, the with low costs and stable performance of function.
Description
Technical field
The utility model relates to a kind of power supply, specifically a kind of laptop electric power.
Background technology
Along with the development of electronics technology; notebook has become the requisite instrument of modern office learning recreation; a lot of people finds the very fast of the life time decay of Notebook Battery when using notebook; reason is that existing laptop too simplifies; function singleness; effective safeguard measure can not be provided to the abnormal electric power thus supplied in electrical network, therefore need to be improved.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the laptop electric power of stable performance, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of laptop electric power, comprise transformer W, fuse FU, triode V1 and transient voltage suppressor diode E1, it is characterized in that, one end connecting valve S1 of the winding N1 of described transformer W, the other end of switch S 1 connects 220V alternating current, the other end of the winding N1 of transformer W connects the other end of 220V alternating current, one end of the winding N2 of transformer W connects the anode of diode D1 and the negative electrode of diode D3, the negative electrode of diode D1 connects the negative electrode of diode D2, electric capacity C1, electric capacity C2 and fuse FU, the other end of the winding N2 of transformer W connects the anode of diode D2 and the negative electrode of diode D4, the anode of diode D3 connects the anode of diode D4, the other end of electric capacity C1, the other end of electric capacity C2, the negative electrode of diode D5, the negative pole of resistance R1 and unidirectional thyristor Q1, the other end of fuse FU connects the positive pole of unidirectional thyristor Q1, the pin 1 of chip IC 1 and the collector of triode V1, the base stage of triode V1 connects the pin 3 of chip IC 1, the pin 2 of chip IC 1 connects transient voltage suppressor diode E1 and output voltage U1, the other end of transient voltage suppressor diode E1 connects the anode of diode D5.
As preferred version of the present utility model: described diode D5 is light emitting diode, the model of described chip IC 1 is LM7809.
Compared with prior art; the beneficial effects of the utility model are: not only structure is simple for the utility model laptop electric power, components and parts are few; cost of manufacture is low; and use three terminal regulator and triode composition Voltage stabilizing module; guarantee the stability of output voltage; simultaneously also be provided with overvoltage crowbar in circuit, therefore there is the advantage of the low and stable performance of diverse in function, cost.
Accompanying drawing explanation
Fig. 1 is a kind of circuit diagram of laptop electric power.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of laptop electric power, comprise transformer W, diode D1, inductance L 1 and unidirectional thyristor RT1, described transformer W primary side connects 220V alternating current, and one end of transformer W out secondary connects electric capacity C1, transient voltage suppressor diode DW, the anode of diode D1 and the negative electrode of diode D2, the other end of transformer W out secondary connects the other end of electric capacity C1, the other end of transient voltage suppressor diode DW, the anode of diode D3 and the negative electrode of diode D4, the negative electrode of diode D1 connects negative electrode and the inductance L 1 of diode D3, and the anode of diode D2 connects the anode of diode D4, resistance R1, resistance R11, resistance R12, electric capacity C6, electric capacity C8, electric capacity C10, trimming capacitor C P1, the anode of diode D5, the negative electrode of diode D6 and notebook A, the other end contact resistance R2 of inductance L 1, the anode of resistance R4 and unidirectional thyristor RT1, the other end of resistance R2 connects the anode of unidirectional thyristor RT2, the other end of trimming capacitor C P1 and the collector of triode VT1, the other end of the base stage contact resistance R1 of triode VT1 and a stiff end of potentiometer RP1, the emitter contact resistance R10 of triode VT1, the other end of resistance R10 connects the negative electrode of diode D10, another stiff end contact resistance R3 of potentiometer RP1, the sliding end of resistance R5 and potentiometer RP1, the other end of the other end contact resistance R4 of resistance R3, the other end of resistance R11, the other end of electric capacity C6 and the control pole of unidirectional thyristor RT2, the other end of the negative electrode contact resistance R12 of unidirectional thyristor RT2 and electric capacity C7, the other end contact resistance R7 of electric capacity C7 and the control pole of unidirectional thyristor RT1, the other end of the negative electrode contact resistance R7 of unidirectional thyristor RT1 and resistance R8, the other end contact resistance R9 of resistance R8 and the other end of electric capacity C8, the other end of resistance R9 connects the anode of diode D6 and the stiff end of potentiometer RP2, and another stiff end of potentiometer RP2 connects the sliding end of potentiometer RP2, the other end of resistance R5 and resistance R6, the other end of resistance R6 connects the other end of electric capacity C10 and the other end of notebook A.
The model of described transient voltage suppressor diode DW is SMAJ.
Principle of work of the present utility model is: 220V alternating voltage becomes galvanic current be added in the rectifier bridge be made up of diode D1 ~ D4 after step-down transformer W after, electric capacity C1, C2 are two 4700 μ F large bulk capacitance filtering, then through fuse FU, unstabilized DC voltage are delivered to triode V1.Chip IC 1 output terminal connects with the base stage of triode V1, and its input end is connected with the collector of V1, and common port by connecting luminous diode D5 after transient voltage suppressor diode E1 extremely.There is provided bias voltage by light emitting diode D5 to the common port of chip IC 1, thus make IC1 output voltage be elevated to about 20.2V.This voltage is also the base voltage of V1, does not stablize defeated people's voltage and adjusts through V1, and the direct-flow steady voltage exporting 19.5V uses to notebook computer.Light emitting diode D5 is power light.Resistance R1 and unidirectional thyristor Q1 is power supply output over-voltage protection circuit, and when output voltage exceedes certain limit, unidirectional thyristor Q1 controls pole conducting, reaches the object of protection calculation machine.
Claims (2)
1. a laptop electric power, comprise transformer W, fuse FU, triode V1 and transient voltage suppressor diode E1, it is characterized in that, one end connecting valve S1 of the winding N1 of described transformer W, the other end of switch S 1 connects 220V alternating current, the other end of the winding N1 of transformer W connects the other end of 220V alternating current, one end of the winding N2 of transformer W connects the anode of diode D1 and the negative electrode of diode D3, the negative electrode of diode D1 connects the negative electrode of diode D2, electric capacity C1, electric capacity C2 and fuse FU, the other end of the winding N2 of transformer W connects the anode of diode D2 and the negative electrode of diode D4, the anode of diode D3 connects the anode of diode D4, the other end of electric capacity C1, the other end of electric capacity C2, the negative electrode of diode D5, the negative pole of resistance R1 and unidirectional thyristor Q1, the other end of fuse FU connects the positive pole of unidirectional thyristor Q1, the pin 1 of chip IC 1 and the collector of triode V1, the base stage of triode V1 connects the pin 3 of chip IC 1, the pin 2 of chip IC 1 connects transient voltage suppressor diode E1 and output voltage U1, the other end of transient voltage suppressor diode E1 connects the anode of diode D5,
2. a kind of laptop electric power according to claim 1, is characterized in that, described diode D5 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619614.8U CN204965319U (en) | 2015-08-17 | 2015-08-17 | Notebook computer power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619614.8U CN204965319U (en) | 2015-08-17 | 2015-08-17 | Notebook computer power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204965319U true CN204965319U (en) | 2016-01-13 |
Family
ID=55060373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520619614.8U Expired - Fee Related CN204965319U (en) | 2015-08-17 | 2015-08-17 | Notebook computer power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204965319U (en) |
-
2015
- 2015-08-17 CN CN201520619614.8U patent/CN204965319U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160817 |