CN101409458A

CN101409458A - Power adapter capable of switching off AC power supply

Info

Publication number: CN101409458A
Application number: CNA2008102176008A
Authority: CN
Inventors: 郑林全
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-24
Filing date: 2008-11-24
Publication date: 2009-04-15

Abstract

The invention discloses a power adapter capable of cutting off an AC power supply. The power adapter having a manual-control and electric-control combination switch comprises a magnetic latching relay of the manual-control and electric-control combination switch, a coil drive circuit and an AC/DC module.

Description

But a kind of power supply adaptor of switching off AC power

Affiliated technical field

The present invention relates to field of power management, but particularly relate to a kind of power supply adaptor by the main frame switching off AC power.

Background technology

The all charged hardly source switch of existing power supply adaptor, the operation of charged source switch are also inconvenient, will power consumption in the supply socket as long as be inserted in.

Summary of the invention

But the invention discloses a kind of power supply adaptor and application scheme thereof of switching off AC power.But a kind of power supply adaptor of switching off AC power comprises the module of a kind of magnetic latching relay and coil driver (coil is a pulsed drive) and AC/DC of hand-control electric-controlled unit switch.The control circuit that also comprises host side, he comprises button wakeup logic switching on and shutting down control circuit, back-up source.

The technical problem to be solved in the present invention: be how to realize that main frame realizes the power supply adaptor switch to the power supply adaptor switch with under the main frame non-transformer, and propose solution.

The present invention solves its technical problem (1): the solution that switch adopts that realizes power supply adaptor under the main frame non-transformer is: the mains switch of making power supply adaptor by a kind of magnetic latching relay of hand-control electric-controlled unit switch, the directly closure and the disconnection of manual operation relay guarantees the hand switch machine.

The technical problem to be solved in the present invention (2): how to realize that main frame to the solution that switch adopts of power supply adaptor is: by a control line in main frame and the power supply adaptor, drive circuit is operated relay coil in (1) high-low level and the power supply adaptor.(2) positive negative pulse stuffing is directly operated relay coil.Realization is to the switch of power supply adaptor.

Adopt technique scheme, and guarantee the switch operate as normal of power supply adaptor.It has shutdown back standby zero-power, advantage easy to implement.

Description of drawings

Fig. 1 power supply adaptor block diagram;

Fig. 2 power supply adaptor schematic diagram (1);

Fig. 3 power supply adaptor schematic diagram (2);

Fig. 4 is the host side control principle figure supporting with Fig. 2;

Fig. 5 is the host side control principle figure supporting with Fig. 3;

Embodiment

Now illustrated embodiment is further set forth the present invention in conjunction with the accompanying drawings.

But the present invention solves the solution that power supply adaptor adopts of a kind of switching off AC power of its technical problem: Fig. 1 is the power supply adaptor block diagram: a kind of magnetic latching relay of hand-control electric-controlled unit switch, he is the bistable state magnetic latching relay, coil is to adopt positive negative pulse stuffing to drive closed and disconnection, also can and disconnect by manually control closure.Coil driver, compositions such as AC/DC module.

Fig. 2 is that power supply adaptor schematic diagram (1) and Fig. 4 host side control principle figure cooperate.The direct control line K11 of relay coil is connected with the C11 negative pole.Fig. 4 obtains high level when button S11 presses U11A NOR gate input 2, and U11A NOR gate output 1 is with regard to step-down level Q11 conducting, and Q12 turn-offs, the C11 anode gets, can not suddenly change because of the electric capacity both end voltage, coil obtains positive pulse, and the relay closes power supply adaptor wakes start up.Unclamping behind the S11 keeps 3,4,5 starts of wait U11A NOR gate input to keep signal because C12 and R12 form.If U11A

NOR gate input

3,4,5 not start is kept signal, U11A NOR gate output 1 uprises level because of U11A NOR gate input 2 step-down level, the Q12 conducting, Q11 turn-offs, the C11 anode is by Q12 conducting ground connection discharge, and coil obtains the deenergization adapter shutdown that resets of negative pulse relay.R11 is a current limliting, and D11 isolates, and capacitor C 11 is back-up source energy storage, and the product that C11 electric capacity 0.47F can satisfy circulation start work in 50 hours need not manual start.

Fig. 3 is that power supply adaptor schematic diagram (2) and Fig. 5 host side control principle figure cooperate.Relay coil one end is connected with C21 electric capacity negative pole, the C21 capacitance cathode is connected with D21 diode cathode, R21 resistance, G21 transistor collector, the D21 diode cathode is connected with main frame by control line K21, the base stage of G21 triode is connected with R21 resistance, D22 diode cathode, power supply ground (GND), and the emitter of G21 triode is connected with an end, the D22 diode cathode of coil L.Fig. 5 works as button S21 and presses U21A NOR gate input 2 with regard to the step-down level, the 1 output low level Q21 conducting of U21A NOR gate output, Q22 turn-offs, control line K21 obtains high level, coil L gets positive pulse by C21 negative terminal, D21 diode, control line K21 and D22 diode, power supply ground GND, and the relay closes power supply adaptor wakes start up.Unclamping behind the S21 keeps 3,4,5 starts of wait U21A NOR gate input to keep signal because C23 and R23 form.If U21A

NOR gate input

3,4,5 not start is kept signal, U21A NOR gate output 1 uprises level because of U11A NOR gate input 2 step-down level, the Q22 conducting, Q21 turn-offs, control line K21 is by Q12 conducting ground connection zero level, capacitor C 21 anodes are by the emitter of G21 transistor collector, G21 triode, and resistance R 21 provides bias current, the conducting of G21 triode to G21.Coil obtains the reset deenergization adapter shutdown of negative pulse relay.R22 is a current limliting, and D23 isolates, and capacitor C 22 is back-up source energy storage, and the product that C22 electric capacity 0.47F can satisfy circulation start work in 50 hours need not manual start.Support power supply adaptor Offhost outage shutdown.

Adopt technique scheme, and guarantee the switch normal operation of power supply adaptor. It has shutdown Rear standby zero-power-consumption, advantage easy to implement. He can be applied to laptop computer, ultra-thin television, Ultrathin display, DPF and network electronic product etc. main frame is controlled disconnected to power supply adaptor The electrical zero power-consumption standby.

Claims

1. but the invention discloses a kind of power supply adaptor application scheme of switching off AC power.The module that comprises a kind of magnetic latching relay and coil driver (coil is a pulsed drive) and AC/DC of hand-control electric-controlled unit switch.The control circuit that also comprises host side, he comprises button wakeup logic switching on and shutting down control circuit, back-up source.

2. but according to the power supply adaptor application scheme of the described a kind of switching off AC power of claim 1, it is characterized in that: power supply adaptor has hand switch, hand switch and magnetic latching relay are one, coil is that the positive negative pulse stuffing excitation drives, determine closure and reset by pulse polarity, as long as a control line, can the hand switch machine and by the control line switching on and shutting down.

3. but according to the power supply adaptor application scheme of claim 1,2 described a kind of switching off AC power, it is characterized in that: coil driver (coil is a pulsed drive) is arranged in the power supply adaptor, control line is as long as high-low level need not pulse, and the Offhost outage is shut down.

4. but according to the power supply adaptor application scheme of claim 1,2 described a kind of switching off AC power, it is characterized in that: do not have coil driver in the power supply adaptor, can pass through switching on and shutting down of control line positive negative pulse stuffing and hand switch machine.

5. but according to the power supply adaptor application scheme of claim 1,2,3,4 described a kind of switching off AC power, it is characterized in that: hand switch be when back-up source exhausts, wake up power supply and by force Switching Power Supply use.

6. but according to the power supply adaptor application scheme of claim 1,2,3,4,5 described a kind of switching off AC power, it is characterized in that: hand switch is arranged on the power supply adaptor, and hand switch and magnetic latching relay are one.

7. but according to the power supply adaptor application scheme of claim 1,2,3,4,5,6 described a kind of switching off AC power, it is characterized in that: can pass through the switching on and shutting down of control line Remote.

8. but according to the control circuit of the host side of the power supply adaptor application scheme of the described a kind of switching off AC power of claim 1, it is characterized in that: many inputs NOR gate of under back-up source, working, output is connected on the power reverser, reverser output directly connects control line, has only high-low level on the control line.Input is connected to and wakes button up.

9. but according to the control circuit of the host side of the power supply adaptor application scheme of the described a kind of switching off AC power of claim 1, it is characterized in that: many inputs NOR gate of under back-up source, working, output is connected on the power reverser, reverser output connects control line by electric capacity, has only positive negative pulse stuffing on the control line.Input is connected to and wakes button up.

10. but according to the control circuit of the host side of the power supply adaptor application scheme of claim 1,8,9 described a kind of switching off AC power, it is characterized in that: many inputs NOR gate of under back-up source, working, input end signal has a high level start, all low level shutdown.