Intelligent control circuit of power adapter of notebook computer
A power adapter, notebook computer technology, applied in the direction of data processing power supply, measuring device, measuring flow/mass flow, etc., can solve problems such as failure to save electricity and protect computer batteries, achieve novel design, save electricity, Simple circuit layout
Inactive Publication Date: 2015-03-11
广州三阳电子科技有限公司
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Problems solved by technology
However, these two solutions cannot automatically cut off the power after the notebook power supply is turned off normally, so the purpose of saving electricity and protecting the computer battery cannot be achieved.
Method used
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Embodiment
[0012] like figure 1 As shown, first insert the input terminal plug on the laptop power adapter circuit into the 220V power supply, and plug the output terminal into the laptop computer, press the button switch AN1, and the terminals 3 and 4 of the U circuit on the laptop power adapter circuit will be To work with electricity, terminals 3 and 4 of the U circuit output 19V DC voltage to provide voltage for the notebook computer, and at the same time charge the battery in the notebook computer to make the notebook computer start to work. At the same time, the DC voltage output by terminal 3 of the U circuit is stepped down by the first resistor R1, and then stabilized by the voltage regulator diode VD1 to output a 12V voltage to charge the first capacitor C1 through the third resistor R3. When the first capacitor C1 is charged , the base voltage of the first transistor Q1 is lower than the emitter voltage through the fourth resistor R4, the first transistor Q1 is turned on, and ...
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The invention relates to an intelligent control circuit of a power adapter of a notebook computer. The intelligent control circuit comprises a U circuit, wherein the input terminal of the U circuit is connected to a power supply of 220V and is connected with a push button switch and a switch; the output terminal of the U circuit is connected to the notebook computer; the third output terminal of the U circuit is connected to the base electrode of a second triode through a relay; the second triode is connected with a first triode through a fifth resistor; one terminal of the first triode is connected to the relay through a fourth resistor, a first capacitor and a third resistor; the emitting electrode of the first triode is connected to the third output terminal of the U circuit through a second diode; a fourth output terminal of the U circuit is connected to a third triode through a third diode; the collecting electrode of the third triode is connected to a fourth triode through a tenth resistor; the emitting electrode of a fourth triode is connected to the positive voltage of the third output terminal of the U circuit through a four diode; and the collecting electrode of the fourth triode is connected to the collecting electrode of the first triode through an eight resistor, a fifth diode and a second capacitor. The intelligent control circuit has the advantages of simple layout and novel design.
Description
technical field [0001] The invention relates to the technical field of power supply equipment, in particular to an intelligent control circuit of a notebook computer power adapter. Background technique [0002] Along with the substantial increase of the computer penetration rate, computers can be seen everywhere in daily life, office, entertainment, etc., and people have higher and higher requirements for the convenience and speed of computer use. Notebook computers are accepted by more and more people because of their portability. The power adapter used in commercially available notebook computers adopts a transformer to step down the voltage and does not have a power switch. This makes the power adapter still in a power-on state and consumes static power if the mains power supply is not pulled out after the computer is turned off. If the computer is shut down and the mains power supply is unplugged at the same time, the manual switching action of the computer will be incr...
Claims
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IPC IPC(8): G06F1/26G06F1/32
Inventor 刘举柱
Owner 广州三阳电子科技有限公司