Patent Application
20160187913
This application claims priority to Chinese Patent Application No. 201410819139.9 filed on Dec. 25, 2014, the contents of which are incorporated by reference herein in its entirety.
The subject matter herein generally relates to a power supply system.
Printed circuit boards (PCBs) usually have slots for inserting memory chips. Users can insert one or more memory chips in the slots as required. When some of the slots are empty, dusts and other conductive objects may drop in the slots and cause short circuit on the PCB.
Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like.
The switch circuit 200 includes a first switch Q1 and a second resistor R2. The first switch Q1 includes a first terminal, a second terminal, and a third terminal. In at least one embodiment, the first switch Q1 is an n channel MOSFET. The first terminal, the second terminal, and the third terminal of the first switch Q1 are gate, source, and drain respectively.
The first terminal of the first switch Q1 is electrically coupled to the connection point between the second data terminal VSS_4 and the first resistor R1, and receives the switch control signal. The second terminal of the first switch Q1 is grounded. The third terminal of the first switch Q1 receives the first DC voltage VCC1 via the second resistor R2. The third terminal of the first switch Q1 outputs a power control signal.
The power supply circuit 300 includes a second switch Q2, a third switch Q3, a fourth switch Q4, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. Each of the second switch Q2, the third switch Q3, and the fourth switch Q4 includes a first terminal, a second terminal, and a third terminal. In at least one embodiment, the second switch Q2, the third switch Q3, and the fourth switch Q4 are n channel MOSFETs. The first terminal, the second terminal, and the third terminal of each of the second switch Q2, the third switch Q3, and the fourth switch Q4 are gate, source, and drain respectively.
The first terminals of the second switch Q2, the third switch Q3, and the fourth switch Q4 are electrically coupled to the third terminal of the first switch Q1. The second terminals of the second switch Q2, the third switch Q3, and the fourth switch Q4 are grounded via the third resistor R3, the fourth resistor R4, and the fifth resistor R5 respectively. The second terminals of the second switch Q2, the third switch Q3, and the fourth switch Q4 are electrically coupled to the number of power terminals VCC_1, VCC_2, VCC_3 respectively. The third terminals of the second switch Q2, the third switch Q3, and the fourth switch Q4 receive a second DC voltage VCC2, a third DC voltage VCC3, and a fourth DC voltage VCC4 respectively.
The electronic device 400 includes a number of first data pins VTT_1, VTT_2, VTT_3, a second data pin VTT_4, and a number of power pins VDD_1, VDD_2, VDD_3. Each of the first data pins VTT_1, VTT_2, VTT_3 is electrically coupled to the second data pin VTT_4.
The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of a power supply system. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201410819139.9 | Dec 2014 | CN | national |
