solar powered power supply for laptops
Tài liệu tiếng anh Điện tử công suất mạch MERS Power supply for pulsed magnets with magnetic energy recovery current switch
Ngày tải lên: 15/10/2013, 16:11
Chapter 3: Power Supply Concepts for Driverless Industrial Trucks pps
Ngày tải lên: 05/07/2014, 06:20
Power Supply Units Guide.
... để tìm ra con số cần thiết ví dụ như: - http://www.jscustompcs.com /power_ supply/ - http://www.mymp3car.com/MP3Car/PSUpower.asp Trong thực thế, Khi đem một hệ thống thuộc dạng mạnh được ... ra thử nghiệm bao gồm: + AMD Opteron DualCore 165 @ 2.9Ghz. + DFI LanpartyUT nForce4 SLI-D. + nVIDIA GeForce 6800Ultra + 4x512 Corsair XMS PC3200C2. + 3x Maxtor Diamond Plus 9 120GB 7200rpm ... liên tục: Mức năng lượng liên tục (Continuous Power) là chỉ số nêu lên khả năng cấp điện của nguồn mọi lúc trong khi năng lượng cực đại (Peak Power) lại chỉ mức tối đa trong khoảng thời gian...
Ngày tải lên: 01/11/2012, 16:38
UPS (Uninterruptible Power Supply)
... Nếu máy khởi động ở lần thử thứ hai và thứ ba thì ắt hẳn là do tín hiệu Power_ OK (hoặc Power_ Good). Khi có tín hiệu Power_ OK, mainboard sẽ hiểu rằng PSU đã ổn định, nếu không thì mainboard ... khởi động bằng cách chập hai chân của nút power switch trên mainboard bằng một chiếc tua-vít, chìa khóa hay bất cứ thứ gì có thể dẫn điện. Nếu công tắc power switch của bạn bị hỏng và bạn không ... Học 1. Đôi nét về bộ nguồn máy tính. 1.1.Bộ nguồn máy tính là gì ? - Bộ nguồn máy tính (PSU -Power Supply Unit) là một thiết bị phần cứng , nó chuyển đổi năng lượng (từ dòng xoay chiều dân dụng...
Ngày tải lên: 27/04/2013, 11:36
Novel design of a compacted micro-structured air-breathing PEM fuel cell as a power source for mobile phones
Ngày tải lên: 05/09/2013, 14:58
Electronics - Digital Control of Switching Power Supply
... higher bandwidth and higher switching frequency for ac/dc power supply. References [1] Jigna Patel, "The Hottest Markets for External Power Supplies Now ans a Look at Potential Future ... parameters. Digital Control of Switching Power Supply - Power Factor Correction Stage Sangsun Kim and Dr. P. Enjeti Power Electronics and Power Quality Laboratory Department of Electrical ... employed for power supply applications as shown in. Fig. 2. In order to obtain high speed bandwidth of the fixed point DSP, TMS320LF2407, numerous off-line computations are first performed and...
Ngày tải lên: 27/10/2013, 16:15
Tài liệu Power Supply Block Diagram ppt
... often referred to as H. Chan; Mohawk College 37 pgg dc to dc converters. Formulae (cont’d)Formulae (cont’d) FfidRbt iblVFor fixed R L , but variable V i : Z sL i V R RR V + =.min ZsRi Z L i VRIV R += (max) .max LZMR IIIwhere ... causing current to flow through C and D. Basic PushBasic Push Pull Power ConverterPull Power Converter Operates as a class D power amplifier. Output rectifier converts the sq are a e to dc Each ... Basic HalfBasic Half Bridge Power ConverterBridge Power Converter Each transistor “sees” approx. V in . Full flux reversal in the H. Chan; Mohawk College 50 transformer and capacitors across...
Ngày tải lên: 13/12/2013, 23:15
Tài liệu The Computer Case and Power Supply pptx
... Power Supply Estimated time: 45 Minutes Objective In this lab, identify the type of computer case to be used, the form factor of the unit, and the voltage selector switch on the power supply. ... on the Motherboard). Power Supply AT __________ ATX _________ Other _________ Power Supply Wattage _______ Step 2 Examine the screws that will be used for the case. Are the ... the case for the installation of the motherboard. Equipment The following equipment is required for this exercise: ã ESD wrist strap ã Tool kit and screws ã Computer case with power supply...
Ngày tải lên: 21/12/2013, 19:15
Single phase uninterruptible power supply based on z source inverter
... declines by 20% of its normal voltage. The waveform distortion can be observed for the traditional UPS, whereas the sinusoidal waveform can be kept for the proposed UPS. Fig. 9(c) further shows ... patterns for uninterruptible power supply, ” IEEE Trans. Ind. Electron., vol. 35, no. 2, pp. 295–300, May 1988. [15] M. J. Ryan, W. E. Brumsickle, and R. D. Lorenz, “Control topology options for single-phase ... Uninterruptible Power Supply Based on Z-Source Inverter Zhi Jian Zhou, Xing Zhang, Po Xu, and Weixiang X. Shen, Member, IEEE Abstract—This paper presents a new topology of uninterrupt- ible power supply...
Ngày tải lên: 03/01/2014, 19:12
asg 2 electrical power supply
... fuses for fuse-holders or fused switches. A Fig. 2 Power supply functions A Fig. 1 Electrical power supply architecture 2.4 Power supply functions 2. Electrical power supply 6 2.4 Power supply ... distribution system. 2.4 Power supply functions 2.5 Power supply to the control circuit 2. Electrical power supply 7 b Power unit supply The table (C Fig. 5) summarises the power units and functions ... Electrical power supply 3 1 2 3 4 5 6 7 8 9 10 11 12 M 2.1 Introduction Page 2.2 Power supply to machinery Page 2.3 Standards and conventions Page 2.4 Power supply functions Page 2.5 Power supply...
Ngày tải lên: 15/02/2014, 08:33
Your PC, Inside and Out: Chassis, Power supply and Motherboard
... of room for Power Rating The power rating of a power supply is most often referred to as its wattage. You can usually tell the power rating of a PSU just by looking at its model number; for example, ... the power supply is the less AC power it requires to provide sufficient DC power, meaning lower overall power consumption from the mains and a smaller power bill. The earth will thank you for ... can see, a power supply is most efficient at around 50% load; that is to say, this power supply is at its most efficient when providing 275W of power to components. The vast majority of power supplies...
Ngày tải lên: 19/03/2014, 20:35
' LENMAR ' power adapter, for nokia electronic
... do not match. Therefore, there is a need for message do not match. Therefore, there is a need for message transformation between the originator and the recipient. transformation between the ... source adapter transforms the source message to a common A source adapter transforms the source message to a common form while a target adapter changes the common form to that form while a target ... risks for mission critical applications There are too many risks for mission critical applications To provide a means of exchange for business information To provide a means of exchange for...
Ngày tải lên: 19/03/2014, 22:08
The Knowledge Web: People Power – Fuel for the New Economy pot
... we believe that the Internet does not allow for “me, too” companies to be relevant for very long. We also look for companies that leverage the full power of the Internet, which are often “born ... important for the U.S worker, is the fact that globalization has enabled economic specialization like never before. For the workers of developed nations, this has further heightened the need for continuous ... Dollars Expected to Shift Toward Performance-Based Metrics 1999E CPM-Bas ed 85% Performance- Based 15% 2003E CPM-Bas ed 50% Performance- Based 50% Source: Forrester Research, "Internet Advertising...
Ngày tải lên: 29/03/2014, 20:20
Let s go green! build a solar powered parabolic
... http://www.instructables.com/id/Let_s-go-green!-Build-a -Solar- Powered- Parabolic-Co/ Home Sign Up! Explore Community Submit Let's go green! Build a Solar Powered Parabolic Cooker! by Weissensteinburg ... . 7 http://www.instructables.com/id/Let_s-go-green!-Build-a -Solar- Powered- Parabolic-Co/ intro: Let's go green! Build a Solar Powered Parabolic Cooker! Let's face it, energy is expensive. ... parabola. I've used the string method for it, but found it much easier with grid paper. http://www.instructables.com/id/Let_s-go-green!-Build-a -Solar- Powered- Parabolic-Co/ gaiatechnician says: ...
Ngày tải lên: 18/04/2014, 09:08
brown, m. (1990). practical switching power supply design
... major power supply parame- ters as a preliminary guide at the beginning of a switching power supply 4.3 Transformer-Isolated Switching Power Supply Topologies 29 As in all power supply ... Switching Power Supply former is improperly designed, it would adversely affect the supply op- eration and the reliability of the semiconductors. 3.4 Power Switches These are power transistors ... regulator within a system that has a main power supply. 4.3 Transformer-Isolated Switching Power Supply Topologies As one may have seen in the non-transformer-isolated regulator topolo-...
Ngày tải lên: 18/04/2014, 12:25
brown, m. (2001). power supply cookbook (2nd ed.)
... wattmeter for conveniently measuring efficiency and power factor. This is needed for off-line power supplies. 10 Role of the Power Supply within the System and Design Program Power Supply Cookbook Second ... environment in which the power supply must operate. This then forms the basis of the design specification of the power supply. 1.2 Power System Organization The organization of the power system within ... of the power components within the switching power supply design. This arrangement has a large bearing on which environment the supply can operate in safely and how much power the power supply...
Ngày tải lên: 18/04/2014, 12:28