the magnetic components within a switching power supply

... that the first time the statemachine is called, there will already be a value waiting for the statemachine to retrieve This pre-conversion, and the clearing of the data array, presets all the ... 10) A data indexed statemachine, on the other hand, executes the same block of code each time it is called It is the data acted upon by the statemachine that is indexed by the state variable ... If the results from the ADC are stored in an array, the state variable can be used to automatically access the correct location for storing the data, retrieving the next input configuration value,...

Ngày tải lên: 11/01/2016, 16:38

... 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 ... by using analog power factor correction (PFC) as shown in Fig [3] Analog PFC IC's which are manufactured by TI/Unitrode, Fairchild, and STmicroelectronics are available and have been able to provide ... control provides advantages such as programmability, less susceptibility to environmental variations, and fewer part counts [2] It also reduces the size of the power supply by containing the complexity...

Ngày tải lên: 27/10/2013, 16:15

... 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: ... 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) ... 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

... losses within the components It may also guide the designer 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 ... great advantage, the ease of adding multiple outputs to the power supply without adding additional separate regulators for each output All these factors make the transformer-isolated regulator ... for a majority of the appIications Figure 4.1 diagrams the approximate range of usage for these topologies The boundaries to these areas are determined primarily by the amount of stress the power...

Ngày tải lên: 18/04/2014, 12:25

... of a small external field For the ZFC data, the magnetic moment rises more rapidly and attains a greater maximum value for the field applied parallel to the film surface This implies an easy magnetization ... qualitative agreement with the theoretical model of the ZFC magnetization of weakly interacting nanoparticle assemblies proposed by Azeggagh and Kachkachi [31] They show that within a Gittleman–Abeles–Bozowski ... display a sharper transition from the blocked state to the superparamagnetic state [30] Figure also indicates a decrease in the value of TSP as the B applied field is increased to 100, 200, and...

Ngày tải lên: 21/06/2014, 17:20

... her, yet again! This page intentionally left blank About the Authors Abraham I Pressman was a nationally known power supply consultant and lecturer His background ranged from an Army radar officer ... requires a large heat sink and large storage capacitors and makes the linear power supply disproportionately large As electronics advanced, integrated circuits made the electronic systems smaller ... applications 1.2 Linear Regulator the Dissipative Regulator 1.2.1 Basic Operation To demonstrate the main advantage of the more complex switching regulators, the discussion starts with an examination...

Ngày tải lên: 08/08/2014, 06:20

... Antenna SUMMARY The GaAs PA radiates RF energy through a tuned bandpass filter (i.e duplexer) to the subscriber unit’s antenna port Depending on the cellular standard and the power class of the subscriber ... a –5V output Assuming the output is loaded to at least 20% of the maximum available current, the power efficiency of the inductorless boost/ buck regulator can be estimated as the absolute value ... different power levels are required of GaAs PAs For instance, a Class III AMPS subscriber unit must be able to radiate a minimum power level of +28dBm through the antenna A CDMA Class III subscriber...

Ngày tải lên: 11/01/2016, 14:26

... – Advantages • Can carry up to three times the amount of data as TDMA • Transmissions are much harder to eavesdrop on • A would-be eavesdropper must also know the exact chip in which the transmission ... receiving the signal • Attenuation – A loss of signal strength • Multipath distortion – As a radio signal is transmitted, the electromagnetic waves spread out 24 Signal Strength (continued) 25 Radio ... Divides the transmission time into several slots – Each user is assigned the entire frequency for the transmission • For a fraction of time on a fixed, rotating basis – Advantages • Uses the bandwidth...

Ngày tải lên: 13/09/2012, 10:52

... 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 ... The load current rapidly increased by the discharge of the capacitor, and it reached A in about 70 When all MOSFETs are turned off, current rapidly decreased, and the capacitor was charged at 300 ... charged the switching started And the discharge voltage rises gradually by repeated switching In steady state after time passed enough, high-voltage pulse of 1250 V was applied to the load The...

Ngày tải lên: 15/10/2013, 16:11

... Faster, Available from: http://www.lifehack.org/articles/lifehack/advantages-of -a- smaller-team.html [ accessed 22 May 2008 ] In addition, about administration side, team work allow manager can ... is also used in team management of Texas Instrument Basically, rely on characteristic of this approach, there is no one best way to manage and the management style appropriate both to the tasks ... One area where the ICT has also a significant impact is in the labor and work environment The development of ICT has contributed a great deal to many aspects of the concept of decent work The latter...

Ngày tải lên: 21/12/2013, 00:26

... 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 ... complete with a power supply However, not all cases are built for the United States market and therefore may not be set for the correct voltage Look in the back of the case for the voltage selector...

Ngày tải lên: 21/12/2013, 19:15

... Federal agencies and states can partner with national organizations such as the National Association of Child Care Resource and Referral Agencies (NACCRRA), the National Association for the Education ... implemented a similar law prior to enactment of the Affordable Care Act, and early research indicates it may have favorably affected eating habits, although firm conclusions cannot yet be drawn.122 A recent ... the American Medical Association (AMA), HHS’s Health Resources and Services Administration (HRSA), and the CDC, made recommendations, which have been endorsed by the American Academy of Pediatrics...

Ngày tải lên: 14/03/2014, 09:20

... evidence that the g ¼ 2.27 signal is not an artifact As regards the nature of the signal, the lack of a visible negative absorptionshaped peak at higher magnetic fields appears to be, at first glance, ... peak as well as the broad g ¼ 2.27 feature disappeared, whereas the narrow signal became more prominent At 23 K, the g ¼ 1.98 signal was observed as an undisturbed resonance of a single paramagnetic ... K, the axial signal around 13 K While the P1+ signal appeared to be slightly power saturated already above 25 mW, the axial signal remained unsaturated even at 200 mW However, both signals behaved...

Ngày tải lên: 18/03/2014, 01:20

... expressed mathematically in a matrix formation The fictitious dc voltage, , is derived from the rectifier mode of operation (1) is input angular A Rectifier Mode of Operation As detailed in the earlier ... Somnida Ratanapanachote received the B.Eng degree from Mahidol University, Nakhon Pathom, Thailand, in 1995, and the M.Eng and Ph.D degrees from Texas A& M University, College Station, in 1998 and ... joined the Department of Elecrical Engineering, Chungnam National University, Daejeon, Korea His research interests are high power converter, ac/dc, dc/ac and ac/ac converter topologies, power quality...

Ngày tải lên: 13/05/2014, 00:55

... 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 ... Schmidheiny as he tried to make businesspeople aware of the threat that environmental degradation posed to business success It was also the approach taken by the physicians who raised the alarm about the ... stuck in a quagmire They clearly cannot wave a magic wand and make everything better Today, anyone who’s involved in the fight against AIDS realizes that a host of groups and organizations need...

Ngày tải lên: 01/06/2014, 10:32

... j’, z’) The axis of the magnetic field overlapped with the O’ Z’ axis The distance between the center of the cell and the axis of the coil was C Table Model parameters Parameters Standard value ... field, and j = −1 was the imaginary unit Model parameters Table lists the parameters used for the model To quantitatively investigate the amount of polarization on both the cytoplasmic and organelle ... properties of the material considered in the model are frequency-dependent With the standard values, ψcell was always greater than and ψorg (Figure 3A) At 10 kHz, the maximal polarization on the cell...

Ngày tải lên: 19/06/2014, 08:20

... exceeds 0.1 lular rather than intracellular anchoring of these viral proteins in the plasma membrane Nuclear localization signals (NLSs) can also be detected in the viral proteomes A larger proportion ... likely an appropriate choice for the prediction of the localization of viral proteins within human cells Another advantage of PSLT is that it considers domains and motifs rather than amino acid ... is available in the literature (the full prediction dataset is available as supplementary material, please see Additional file 2) The prediction accuracy of PSLT on this dataset is estimated to...

Ngày tải lên: 20/06/2014, 01:20

... Cambridge, MA, USA Page of Authors’ contributions BW designed and coordinated the study, participated in data cleaning and data analysis, and was the lead author on this paper ED performed data ... and UNITAID as provided by the Clinton Health Access Initiative [11-14] Antiretroviral transactional data was systematically cleaned and validated using a market intelligence database described ... performed data cleaning and data analysis SM contributed to data analysis, writing of the manuscript, and editing for important content All authors read and approved the final version of the manuscript...

Ngày tải lên: 20/06/2014, 08:20

... 1b), including the primary wall (P) and several secondary wall layers (S1, S2 and S3) Each of these layers is Page of characterised by a specific arrangement of fibrils as has been detailed described ... mainly to the primary and S1 layers of the fibre wall, which are preserved during chemical pulping Contrary to the outer layers of the fibre wall (primary and S1 layers), the S2 layer is characterised ... fibril, the microfibril, the macrofibril and the lamellar membrane In the work of Maier [13], the term “elementary fibril” was reported to have a diameter of 3.5 nm and was applied following the...

Ngày tải lên: 21/06/2014, 03:20