turning on pc power supply without motherboard

... PCIE connectors can also be powered using 2 molex connectors if one isn’t available from the PSU itself, and molex to SATA power connectors are also quite common. SATA - This connector ... particularly common on older power supplies, but as mentioned above it is possible to get a converter cable. Indeed, most budget cases still use this design, and for good reason – it’s a conventional, ... the more efficient 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...

Ngày tải lên: 19/03/2014, 20:35

... operation, the rectifier provides power 0278-0046/$25.00 â 2008 IEEE 3002 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 55, NO. 8, AUGUST 2008 Fig. 9. Simulation results. (a) Traditional UPS ... transfer function is W ou (s)=W u (s)W ci (s) 1 sC s (20) where W u (s) is the transfer function of the outer loop controller. The proportional–integral (PI) controller is adopted to con- trol the ... high efficiency, low harmonics, fast response, and good steady-state performance in comparison with traditional UPSs. The simulation and experimental results of a 3-kW UPS with the new topology confirm its validity. Index...

Ngày tải lên: 03/01/2014, 19:12

Ngày tải lên: 13/05/2014, 00:55

Ngày tải lên: 05/09/2013, 09:38

Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 15/10/2013, 16:11

... D/A converters or power control devices. The A/D Converter of ST52x420 is an 8-bit analog to digital converter with up to 8 analog inputs offering 8-bit resolution and a typical conversion time ... system parameters. Digital Control of Switching Power Supply - Power Factor Correction Stage Sangsun Kim and Dr. P. Enjeti Power Electronics and Power Quality Laboratory Department ... additional PFC boost converter in the system is A conventional SMPS employs a diode rectifier for ac to dc conversion. This type of utility interface generates harmonics and the input power...

Ngày tải lên: 27/10/2013, 16:15

... R s constant. Since the voltage drop across R s is constant V stays constant H. Chan; Mohawk College 11 constant, V o stays constant. Comparison of Different Types of RectifiersComparison of ... 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 transistor m st ... dropout, higher in/output, and better regulation are available. Equations for Buck RegulatorEquations for Buck Regulator ttV T t tt t V V on offon on i o = + = Sl i I 04I hISelecting I L = 0.4I o where...

Ngày tải lên: 13/12/2013, 23:15

... _______________ USB Keyboard Connector _______ 5-pin DIN or ________ 6-pin mini DIN _______ USB (Make sure it matches the connector on the Motherboard) . Power Supply AT __________ ATX ... 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. ... exercise: ã ESD wrist strap ã Tool kit and screws ã Computer case with power supply ã Motherboard standoffs and screws ã Motherboard & manual ã Devices that will not be installed yet, but...

Ngày tải lên: 21/12/2013, 19:15

... BLDC motor using PWM control, the stator winding is at unceasingly the power on and off condition periodically, the air gap magnetic flux is weakened along with the rotor position changing[8]. III. ... ON REACTIVE POWER WITH BLDC MOTOR The electrical machinery power is composed by the active power and the reactive power[ 9]-[10]. In the static α − β frame, the active power P e and reactive power ... reactive power; I. INTRODUCTION The electric vehicle(EV) is the cleanenergy saving and environmental protection transportation vehicle, which hav- ing no pollution, low heat radiation , the noise...

Ngày tải lên: 03/01/2014, 19:47

... Electrical power supply architecture 2.4 Power supply functions 2. Electrical power supply 6 2.4 Power supply functions There are three separate functions: b Supply and cut off the machine power ... Electrical power supply 7 b Power unit supply The table (C Fig. 5) summarises the power units and functions covering the requisite functions. 2.5 Power supply to the control circuit The power supply ... 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

... State Approval. Graham GreeneOne day I gave The Power and the Glory to a native of Mexico who had lived through the worst persecutions She confessed that your descriptions were so vivid, your priest ... being shot. After several months from the governor's office appeared a news, that there was still one priest, Father Montez, who was moving from village to village working on the Church by administering ... the priest. No one noticed the irony, including the young lieutenant, who was more interested in arresting the priest. When the officer received permission to look for Father Montez, the priest...

Ngày tải lên: 21/03/2014, 22:53

... tiếp và song song Chú ý khi sử dụng Chú ý khi lắp đặt Ngõ vào Ngõ ra Ngõ raNgõ vào Kết nối song song Kết nối nối tiếp Bộ nguồn ổn áp không được sử dụng kết nối nối tiếp và song song trong bất ... nó với đầu nối khác thì mạch bên trong sẽ bị hư hỏng. Nó làm việc với 2000VAC giữa đầu nối và vỏ hộp trong một phút, nhưng nó sẽ hư hỏng nếu quá áp được cấp trong vài phút. Bộ nguồn ổn áp có điện ... vào Sản phẩm này không có giá trị để hoạt động theo dạng điện áp ngõ ra song song và nối tiếp. Dòng điện ngõ ra phải được sử dụng trong phạm vi dải tỷ lệ. Khi nó hoạt động ở trạng thái quá dòng, quãng...

Ngày tải lên: 10/04/2014, 19:55

... EM1 Design Considerations 125 i07 109 Ill I I9 9.4 Power Supply and Product Safety Considerations 9.5 Testing Power Supply Units I 28 132 9.5. I Line Regulation 132 9.5.2 ... Controlled Forward Control) I49 Converters 15 I 10.5 Common Error Amplifier Compensation Techniques I54 10.5. I Single-Pole Conipcnsation 155 10.5.2 Zero-Pole Pair Compensation ... Applied to Power Supplies 10.4 The Control-to-Output Transfer Functions of Common Switching 136 Power Supply Topologies 148 10.4.1 Forward-hlode Control-to-Output Transfer Functions ( Voltage-Mode...

Ngày tải lên: 18/04/2014, 12:25

... the 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 ... a power supply. By presenting intuitive descriptions of the power supply system’s operation along with commonly used circuit approaches, it is designed to help anyone with a working electronics ... as to the role of the power supply within the overall system, and develops the power supply design specification. B. Read the introduction sections for the type of power supply you wish to develop...

Ngày tải lên: 18/04/2014, 12:28

... 126 Interface-implementation Separation 126 EJB: Only a Partial Solution 127 Inversion of Control 127 IoC Implementation Strategies 128 IoC Containers 135 Portability between IoC Containers 137 www.it-ebooks.info ... fashion and emotion. I seldom pass a day without hearing some- one repeat an orthodox opinion they can’t justify (such as “EJB applications are inherently more scalable than applications without ... Container architecture, discussed in Chapter 3, built on an Inversion of Control container ❑ The use of AOP to provide declarative transaction management to POJOs. The underlying transac- tion-management...

Ngày tải lên: 24/04/2014, 15:09

Ngày tải lên: 22/06/2014, 02:20