replacing a broken power supply

... IEEE-IA TRANSACTIONS paper published in mid-year 1994 to mid-year 1995, the IEEE-IAS Magazine Prize Article Award in 1996, the Class of 2001 Texas A& M University Faculty Fellow Award for demonstrated ... engaged in teaching, research and consulting in the area of power electronics, motor drives, power quality, and clean power utility interface issues His primary research interests are advance ... via a filter capacitor is selected by the following equation [7]: (33) where is the power rating, is the peak of input voltage, and is angular input frequency and input current I RATANAPANACHOTE...

Ngày tải lên: 13/05/2014, 00:55

... Sanchez-Sinencio Laszlo Kish Charles S Lessard Costas Georghiades May 2006 Major Subject: Electrical Engineering iii ABSTRACT A Low Power, High Dynamic Range, Broadband Variable Gain Amplifier for an Ultra Wideband ... group delay variation A differential pair can be linearized with diode-connected loads But in large gain cases, the linear range and bandwidth are limited A multiplier has good linearity and flexible ... model At high frequencies, the parasitic capacitance at node C and D must be taken into account (Fig 3.6) Assuming that the gate-source capacitance of M1 and M2 are equal, the current gain computation...

Ngày tải lên: 06/11/2012, 10:26

... its applications to phase change phenomena Thermal Science and Engineering 2002, 10(6), 31-38 [12] Takata Y, Tanaka K, Kaijima K, et al Enhancement of heat transfer with liquid-vapor phase change ... Bejan A, Tsatusaronis G, Moran M Thermal design and optimization, Wiley, 1996 [10] Cengel YA Heat transfer- a practical approach, McGraw-Hill, 1998 [11] Takata Y Photo-induced hydrophilicity and ... on heat and mass transfer related with renewable energies, HV&AC, and energy saving of buildings He has published several research papers in the international journals E-mail address: qicy@mail.hebut.edu.cn...

Ngày tải lên: 05/09/2013, 16:10

... absorbed to the capacitor By choosing suitable capacitor from (1), high voltage can be generated to the capacitor The high voltage is applied on the load when S1 and S3 are turned on again, and ... In steady state, is determined by the resistance and the voltage source as Exploiting the advantage of Marx circuit that capacitors charges in parallel and discharges in series, this magnetic ... switch was made The circuit parameters are given in Table II Fig shows experimental waveforms of current and voltage of the load The repetition rate is kHz Since the capacitors are charged with a DC...

Ngày tải lên: 15/10/2013, 16:11

... in Fig [3] Analog PFC IC's which are manufactured by TI/Unitrode, Fairchild, and STmicroelectronics are available and have been able to provide improved power factor Analog control can provide ... IEEE 519 harmonic limits II Analog and Digital Control Traditionally, the implementation of switching power supply has been accomplished by using analog power factor correction (PFC) as shown ... peripherals such as Event Manager, CAN Interface, SPI, SCI, and ADC modules Fig illustrates the simplified hardware diagram for the DSP The TMS320LF2407 DSP also comes with a flash ROM, allowing...

Ngày tải lên: 27/10/2013, 16:15

... Voltage Regulator The LM723 has an equivalent circuit that contains most of the parts of the op-amp voltage regulator discussed earlier It has an internal voltage reference, error amplifier, amplifier ... are a e dc m st ithstand V plus voltage spikes 49 H Chan; Mohawk College Basic Half-Bridge Power Converter Half- Each transistor “sees” approx Vin Full flux reversal in the transformer and capacitors ... R4 R6 H Chan; Mohawk College 20 Characteristics of Fold-back Limiting FoldVo Notice that Ishort < IL(max) and that Vo is regulated (i.e constant) only after RL > a certain critical value For designing...

Ngày tải lên: 13/12/2013, 23:15

... usually between 250 and 300 watts What is the power supply rating for the case? _ Step Attach the motherboard standoffs to the case Standoffs are small pegs made of a nonconductive material ... USB (Make sure it matches the connector on the Motherboard) Power Supply AT ATX _ Other _ Power Supply Wattage _ Step Examine the screws that will be used for the case Are the ... screws Phillips, Flathead, Posidriver, or Torx? _ Examine the computer case Is it an AT or ATX case? _ Briefly describe the difference between an AT and an ATX case: ...

Ngày tải lên: 21/12/2013, 19:15

... Aug 2007 [19] G Escobar, A A Valdez, J Leyva-Ramos, and P Mattavelli, “Repetitivebased controller for a UPS inverter to compensate unbalance and harmonic distortion,” IEEE Trans Ind Electron., ... for traction drive of fuel cell–battery hybrid vehicles,” in Proc 40th Annu Meeting Ind Appl., Oct 2–6, 2005, vol 3, pp 1651–1656 [14] A Kawamura, R Chuarayapratip, and T Haneysoshi, “Deadbeat control ... the battery bank is 360 V Both the simulation and the experimentation have been carried out The results are shown hereafter A Simulation Results Fig 8 (a) and (b) shows the output voltages and...

Ngày tải lên: 03/01/2014, 19:12

... conductor break is mandatory in TN-S diagrams (France and Norway) The distribution of a neutral conductor in an IT diagram is not permitted (USA and Norway) The maximum rated voltage of an AC control ... Standards and conventions As we have already said, an electrical power supply is governed by constraints in two areas: b Electrical distribution system Each country has its own conventions and ... Electrical power supply Summary 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 to the control circuit Page...

Ngày tải lên: 15/02/2014, 08:33

... good and bad If you’re building a gaming PC, don’t skimp on the case Layout and airflow are important, and it’d be a shame to have amazing components housed in a tacky case which just falls apart ... similar and have the same connectors, but with one major difference Read on to find out more! Standard Power Supplies The standard power supply is usually a good deal cheaper than a modular supply ... They’re also a lot more common In a standard power supply, all of the cables are hardwired into the main unit While this is cheaper and debatably gives slightly better performance than a modular power...

Ngày tải lên: 19/03/2014, 20:35

... have also investigated the S11 factor of the power divider Wilkinson on network analyzer, the result was relatively similar to that of the simulink model Afterthat we have measured the characteristics ... Thanh, Nguyen Anh Tuan, Bach Gia Duong, Research, Design And Fabrication Of The 45W And The 200W, L-Band Power Amplifier Using The Modern Microstrip Technology For Application In The National ... showed that at 1030 MHz the amplifying coefficient reached high value, the input amplitude was set at -10dB and the output one was above 16dB The adjustment of current regime may increase the amplifying...

Ngày tải lên: 22/03/2014, 11:20

... điện môi Chấn động Va chạm Ảnh hưởng điện từ LED Xanh (Gi a ngõ vào đầu nối ngõ 500VDC) Trong phút 3.0kVAC 50/60Hz (Gi a ngõ vào đầu nối ngõ ra) phút 1.5kVAC 50/60Hz (Gi a ngõ vào đầu nối F.G) ... ra, mạch giới hạn áp (SPA - 075/100) nóng Tiêu chuẩn an toàn IEC 60950, IEC 50178 EMS (Electromagnetic Suscetibility) EN61000 - - EMI (Electromagnetic Interference) EN6100 - - Điện áp ngõ ra: ... 240VAC 50/60Hz (85 - 264VAC) Chỉ thò ngõ - Ngõ DV ON, LED ON Cách lắp đặt vào ray Để lắp đặt nguồn ổn áp ray, trước tiên đặt nguồn ổn áp vào phần ray ấn theo chiều Để tháo nguồn ổn áp từ ray,...

Ngày tải lên: 10/04/2014, 19:55

... mortar where you can see any voids Finally point up the new joints to match the existing shape If the joints of the wall are in the shape shown below, this is called bucket handle pointing and ... Push the brick into the opening Some mortar will squash out so cut this off with the trowel Wiggle the brick about so it sits level in the opening and the joints line up with the existing joints ... shown below, this is called bucket handle pointing and is easily achieved by chopping inches from the end of your hose pipe and running it along the joint ...

Ngày tải lên: 14/04/2014, 11:41

... in an approach to packaging the power supply and provide some idea as to the final cost of the supply This effort can act as an early roadmap during the design phase and also saves time because ... viewed as a blackbox with input and output terminals, the behavior of a switching regulator is identical to that of a linear regulator The fundamental difference is that a linear regulator regulates ... Switching Power Supplies? All of these advantages make the switching power supply a much more versatile choice, with a wider range of applications, than the linear supply The disadvantages of the...

Ngày tải lên: 18/04/2014, 12:25

... the power supply the maintaining of the output voltage 2.2 General Linear Regulator Considerations The majority of linear regulator applications today are board-level, low -power applications that ... Thermal Resistance) for an Application 193 A. 6.2 Determine the Maximum Power That Can Be Dissipated by a Three-Terminal Regulator at the Maximum Specified Ambient Temperature without a Heatsink ... operate reliably? How much physical space and what shape is allocated for the power supply within the enclosure? It is always too small, so start negotiating for your fair share Are there any...

Ngày tải lên: 18/04/2014, 12:28

... signal Another typical point and figure pattern is triangles, both bearish and bullish The hallmark of any triangle pattern is that, as prices fluctuate, higher lows and lower highs are created ... Looking again at Figure 3, such a formation is at the far-left of the chart Moving one column to the AAII Journal/August 2000 27 TECHNICAL ANALYSIS FIGURE POINT AND FIGURE CHART DOUBLE-TOP PATTERN ... formation of the double bottom at $34 that signals the potential formation of a bearish triangle The signal is confirmed Point and figure charts are an interesting way of examining the basic...

Ngày tải lên: 23/04/2014, 16:03

... predicted a confrontation between the two men a conservative Euro-American raising questions about the behavior of African American men with a public servant who himself was African American and had a ... support of Dean Brian Atwood and former Associate Dean Sandra Archibald (now dean of the Evans School of Public Policy at the University of Washington) in arranging the sabbatical that enabled us ... years, the area also has become home for many African American residents of Minneapolis As he drove through the area in 1999, Stenglein wondered about all the African American men he saw standing...

Ngày tải lên: 01/06/2014, 10:32