CN202677295U - Automatic circuit breaker of laptop power supply - Google Patents
Automatic circuit breaker of laptop power supply Download PDFInfo
- Publication number
- CN202677295U CN202677295U CN 201220244507 CN201220244507U CN202677295U CN 202677295 U CN202677295 U CN 202677295U CN 201220244507 CN201220244507 CN 201220244507 CN 201220244507 U CN201220244507 U CN 201220244507U CN 202677295 U CN202677295 U CN 202677295U
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- triode
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- circuit
- power supply
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Abstract
The utility model belongs to the technical field of circuit controlling, and relates to an automatic circuit breaker of a laptop power supply. The automatic circuit breaker of the laptop power supply has a delay outage function and is convenient to adjust. The automatic circuit breaker comprises a transformer rectifier filter circuit, a control relay circuit and a delay circuit. One end of an input end of the transformer rectifier filter circuit is connected with one output contact of the power supply through a normally open relay switch, and the other end of the input end of the transformer rectifier filter circuit is connected with the other output contact of the power supply. The control relay circuit comprises a diode, a positive electrode end is connected with an input contact controlling a positive electrode of the power supply, a negative electrode end of the diode is respectively connected with one end of a first capacitance and one end of a rheostat, the other end of the rheostat is connected with a base electrode of a first triode, an emitting electrode of the first triode is connected with one end of a first resistor, a collector electrode of the first triode is connected with a base electrode of a second triode, a collector electrode of the second triode is respectively connected with one end of a relay coil and one end of a second resistor.
Description
Technical field
The utility model belongs to circuit control technology field, relates in particular to a kind of laptop electric power automatic citrcuit bearker.
Background technology
Pattern, the kind of notebook computer are a lot, are widely used in every field.After the existing notebook computer shutdown, can not be automatically and the external power supply disconnection, there is certain electric energy loss, energy-conservation not.
Summary of the invention
The utility model is exactly for the problems referred to above, and a kind of laptop electric power automatic citrcuit bearker that has delayed-breaking-off function, is convenient to regulate is provided.
For achieving the above object, the utility model adopts following technical scheme, and the utility model comprises transformation current rectifying and wave filtering circuit, control relay circuit and delay circuit, its structural feature:
Described transformation current rectifying and wave filtering circuit input end one end links to each other with power supply one output contact by the relay normally open switch, and the transformation current rectifying and wave filtering circuit input end other end links to each other with another output contact of power supply;
Described control relay circuit comprises diode, the diode cathode end links to each other with control positive source input contact, the diode cathode end links to each other with the first electric capacity one end, rheostat one end respectively, the rheostat other end links to each other with the first transistor base, the first transistor emitter links to each other with the first resistance one end, the first transistor collector links to each other with the second transistor base, and the second transistor collector links to each other with relay coil one end, the second resistance one end respectively;
Described delay circuit comprises the second electric capacity and the 3rd resistance, the second electric capacity, the 3rd resistance, relay coil parallel connection;
The described first electric capacity other end, the first resistance other end, the relay coil other end, control power cathode input contact all link to each other with transformation current rectifying and wave filtering circuit cathode output end, and described the second transistor emitter, the second resistance other end all link to each other with transformation current rectifying and wave filtering circuit cathode output end.
As a kind of preferred version, be in series with power light and the 4th resistance between the transformation rectification filter circuit output end described in the utility model.
As another kind of preferred version, the second resistance one end described in the utility model links to each other with the second transistor collector by power failure lamp.
In addition, control positive source input contact described in the utility model links to each other with time dalay indicator light with the power supply pilot lamp respectively by logical circuit with the second transistor collector.
The utility model beneficial effect
1, has delayed-breaking-off function
When shutting down under the control of notebook computer at internal processes, can realize the delay cut-off of notebook computer by the utility model the first electric capacity, the second electric capacity, protection notebook computer internal components.
2, be convenient to regulate
The utility model is convenient to regulate delay time by rheostat.
3, energy-conservation
The utility model transformation current rectifying and wave filtering circuit input end links to each other with the power supply output contact by relay; After notebook computer cuts out, can be automatically and external power supply disconnect.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams.
Fig. 2 is the utility model logical circuit truth table.
Embodiment
As shown in the figure, the utility model comprises transformation current rectifying and wave filtering circuit, control relay circuit and delay circuit;
Described transformation current rectifying and wave filtering circuit input end one end links to each other with power supply one output contact by the relay J normal open switch, and the transformation current rectifying and wave filtering circuit input end other end links to each other with another output contact of power supply;
Described control relay circuit comprises diode D1, diode D1 positive terminal links to each other with control positive source input contact A, diode D1 negative pole end links to each other with the first capacitor C 1 one ends, rheostat Rf one end respectively, the rheostat Rf other end links to each other with the first triode Q1 base stage, the first triode Q1 emitter links to each other with the first resistance R 1 one ends, the first triode Q1 collector links to each other with the second triode Q2 base stage, and the second triode Q2 collector B links to each other with relay J coil one end, the second resistance R 2 one ends respectively;
Described delay circuit comprises the second capacitor C 2 and the 3rd resistance R 3, the second capacitor C 2, the 3rd resistance R 3, relay J coils from parallel connection of coils;
Described the first capacitor C 1 other end, the first resistance R 1 other end, the relay J coil other end, control power cathode input contact all link to each other with transformation current rectifying and wave filtering circuit cathode output end, and described the second triode Q2 emitter, the second resistance R 2 other ends all link to each other with transformation current rectifying and wave filtering circuit cathode output end.
Be in series with power light L2 and the 4th resistance R 4 between the described transformation rectification filter circuit output end.
Described the second resistance R 2 one ends link to each other with the second triode Q2 collector B by power failure lamp L1.
Described control positive source input contact A links to each other with time dalay indicator light L4 with power supply pilot lamp L3 respectively by logical circuit with the second triode Q2 collector B.
Below in conjunction with description of drawings the utility model course of work: will control positive source input contact A and link to each other with notebook computer 5V power port, the control power cathode is inputted contact and is linked to each other with the laptop electric power negative pole; Transformation current rectifying and wave filtering circuit input end links to each other with civil power.
When civil power accessed, power light L2 lighted.
When notebook computer was not started shooting, because the second resistance R 2 dividing potential drops, the second triode Q2 current collection is low level very, and relay J keeps often opening, and power failure lamp L1 lights.
The notebook computer start, cells in notebook computer is for the 5V electricity, and relay J is moved, and civil power is powered to notebook computer, and L3 is bright for the power supply pilot lamp.
The notebook computer shutdown, control positive source input contact A becomes low level, the first capacitor C 1, the second capacitor C 2 discharge lags, time dalay indicator light L4 is bright; After a period of time, the relay J action, notebook computer and civil power disconnect.
Claims (3)
1. the laptop electric power automatic citrcuit bearker comprises transformation current rectifying and wave filtering circuit, control relay circuit and delay circuit, it is characterized in that:
Described transformation current rectifying and wave filtering circuit input end one end links to each other with power supply one output contact by relay (J) normal open switch, and the transformation current rectifying and wave filtering circuit input end other end links to each other with another output contact of power supply;
Described control relay circuit comprises diode (D1), diode (D1) positive terminal links to each other with control positive source input contact (A), diode (D1) negative pole end respectively with the first electric capacity (C1) end, rheostat (Rf) end links to each other, rheostat (Rf) other end links to each other with the first triode (Q1) base stage, the first triode (Q1) emitter links to each other with the first resistance (R1) end, the first triode (Q1) collector links to each other with the second triode (Q2) base stage, the second triode (Q2) collector (B) respectively with relay (J) coil one end, the second resistance (R2) end links to each other;
Described delay circuit comprises the second electric capacity (C2) and the 3rd resistance (R3), the second electric capacity (C2), the 3rd resistance (R3), relay (J) coils from parallel connection of coils;
Described the first electric capacity (C1) other end, the first resistance (R1) other end, relay (J) the coil other end, control power cathode input contact all link to each other with transformation current rectifying and wave filtering circuit cathode output end, and described the second triode (Q2) emitter, the second resistance (R2) other end all link to each other with transformation current rectifying and wave filtering circuit cathode output end.
2. described laptop electric power automatic citrcuit bearker according to claim 1 is characterized in that being in series with between the described transformation rectification filter circuit output end power light (L2) and the 4th resistance (R4).
3. described laptop electric power automatic citrcuit bearker according to claim 1 is characterized in that described the second resistance (R2) end links to each other with the second triode (Q2) collector (B) by power failure lamp (L1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220244507 CN202677295U (en) | 2012-05-29 | 2012-05-29 | Automatic circuit breaker of laptop power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220244507 CN202677295U (en) | 2012-05-29 | 2012-05-29 | Automatic circuit breaker of laptop power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677295U true CN202677295U (en) | 2013-01-16 |
Family
ID=47498185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220244507 Expired - Fee Related CN202677295U (en) | 2012-05-29 | 2012-05-29 | Automatic circuit breaker of laptop power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202677295U (en) |
-
2012
- 2012-05-29 CN CN 201220244507 patent/CN202677295U/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: 20130116 Termination date: 20130529 |