profiling power consumption in desktop computer systems

... RAM power can exceed CPU power in certain workloads, but in practical situations, CPU power overshadows RAM by a factor of two or more Audio displayed a largely static power consumption in the ... NAND/SD power and the CPU and RAM power to support it), and idle power consumption The power and throughput RSD is less than % in all cases The graphics module, which contains the physical SD card interface, ... Total system power consumption was measured at this point by inserting a sense resistor between the supply and the phone For the G1 and N1 we measured total system power by inserting a sense resistor...

Ngày tải lên: 23/03/2014, 13:20

... is obtained during the modems’ training For burst transmission, such as in wireless LANs, CSI can be estimated using a suitable preamble structure or inbound training information However, in order ... appropriate power scaling to preserve the power budget and target error rate constraints The integer-bit constrained loading problem, also referred to as discrete loading, belongs to the class of combinatorial ... multicarrier systems, a power spectral density (PSD) mask constraint is usually imposed by regulatory rules in order to control the level of interference into other communication systems operating in the...

Ngày tải lên: 22/06/2014, 19:20

... shadowing effect [2] The transmit beamforming and receive combining vector for user i can be determined in a similar manner Proposed Coordinated Transmission In this section, we design a coordinated ... transmit power considering the CCI mitigation in a joint manner The main goal is to allocate the transmit power to reduce the CCI while maximizing the achievable rate of the relay link Suppose ... the coordinated eigen-beamforming with physical interpretation 3.1 Eigen-Beamforming (Eig.BF) With the transmit correlation information, the transmitter can determine the eigenbeamforming vector...

Ngày tải lên: 21/06/2014, 17:20

... management in embedded systems, ” Computing & Control Engineering, vol 14, no 5, pp 36–40, 2003 E.-Y Chung, L Benini, and G de Micheli, “Dynamic power management using adaptive learning tree,” in Proceedings ... transitions indicate if the selected policy got a reward or a punishment at that instant of time This concludes that policy switching takes place with incoming dynamic incoming traffic and further increase ... methodology aiming at controlling performance and power levels of digital circuits and embedded systems, with the goal of extending the autonomous operation time of battery-powered systems In this work,...

Ngày tải lên: 22/06/2014, 19:20

... in charge of acquiring and amplifying the brain signal, allocating the electrodes on specific places on the scalp in case of using superficial electrodes, or inside the brain in case of using intracortical ... 2011 Printed in India A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechweb.org Recent Advances in Brain -Computer Interface ... reduce the noise level obtaining a better SNR signal or identifying and processing artifacts After this, in oder to obtain a set 26 Recent Advances in Brain -Computer Interface Systems of parameters...

Ngày tải lên: 27/06/2014, 06:20

... CHAPTER LINEAR TIME-INVARIANT SYSTEMS (g) Let y,[n] = x,[n] * h[n] Compute MATLAB vectors to represent y,[n] and its time indices Again, you may find the expressions in Part (b) useful in defining ... Part (b) useful in determining the indices in ny Make an appropriately labeled plot of y[n] using stem Intermediate Problems One possible use for noncausal LTI systems with finite-length impulse ... defined in Eq (2.6) Store h2[n] on the interval -5 n in the vector h2 (i) Execute the command y2=f ilter(h2,l,x) and create a vector ny2 which contains 26 CHAPTER LINEAR TIME-INVARIANT SYSTEMS indices...

Ngày tải lên: 29/06/2014, 09:20

... buffer discussed in the previous section Inverting and Non-Inverting Inputs The opamp in Figure 3-1 is shown as an open loop Before closing the loop-connecting the inverting input to the output ... is a good idea to find out the inverting versus the noninverting input - v"- -1 I -K T7 Figure 3-1 Bipolar opamp schematic The arrows in Figure 3-1 help in determining the input sign; note that ... package 2.4 Ongoing Trends As wall-to-board power challenges will continue to escalate, MOSFET transistor processing and packaging solutions will continue evolving A system approach to power distribution...

Ngày tải lên: 14/08/2014, 09:21

... as input versus output value setting In a flyback converter the transformer stores energy during the on time of the SW transistor The inductor windings are coupled in such a way (opposite windings ... SPICE-level blocks (like the one in Figure 4-15) A summing block follows the inverting stage into the GLIMIT (or gainholtage limiter), into the inverter, and then into the output The GLIMIT function ... During this phase the voltage across the inductor is VIN- VoUr and the current is building in the inductor at a rate [(VIN VoUT)/L] t If this phase lasts x too long, the current build up inside...

Ngày tải lên: 14/08/2014, 09:21

... maintaining an input and output power match in the presence of low input harmonic current content and tightly regulated output voltage Offline Power Architectures "LINE, 111 A 'LINE t, ,t PLINE ... low integration (single function building blocks) to medium integration (three to ten integrated regulators) to high integration (entire power management, audio power amplifiers, etc.) Interestingly ... FAN4803 is powered (VCCPIN) from the main transformer T via an auxiliary secondary winding transformer (not shown) yielding a relatively low voltage ( V) Since every controller I/O pin sees voltages...

Ngày tải lên: 14/08/2014, 09:21

... motherboard power management designer in the future With performance and complexity increasing and shrinking form factors, the challenge will move from handling rising power to handling rising power ... Proliferation of Power Supplies The two end points in the power chain are the “load” and the “wall power. ” The load end of the chain is in constant evolution, resulting in continuous changes that ... Computing and Communications Systems independently in operating systems and hardware while ensuring that they continue to work together Figure 7-10 illustrates the power management of the entire desktop...

Ngày tải lên: 14/08/2014, 09:21

... system for high power DSTB A total of nine different power lines are serviced, namely the nine output lines in Figure 7-24 These power lines are described in more detail in the following text A dual ... conversion, green power loosely refers to a set of initiatives aimed at reducing power consumption of electrical appliances in standby and in the future, also in operation Some major initiatives are ... from washing machines to commercial air conditioning systems to homes 1-Watt Initiative The International Energy Agency (IEA) created the 1-Watt Initiative aimed at reducing standby power losses...

Ngày tải lên: 14/08/2014, 09:21

... drawing power fromthe AC line in phase with, and proportionalto the input voltage, a way must be found to prevent that device from loading the line except in proportion to the instantaneousline ... may include an input inductor between the system main supply and the converter input as shown in Figure This inductor serves to isolate the twain wpply from the nokc in the switching portion of ... EE161qH) Winding Specification No ,A IF, Pin Wire Turns W2 4+1 0161DxI 18 T L :CENTER SoLENoiD W3 Winding Method w INSULATION POLYESTER TAPE = 025mmllOmm 2Ts 1-OPen 16axl 50Ts SOLENOIDWINDING INSULATION...

Ngày tải lên: 14/08/2014, 09:21

... this pin Reference ground Supply voltage input ~~~~ Inductor pin This pin 16connected to the internal MOSFET switches Power ground Internal N-channel MOSFET IS connected to this pin Feedback Input ... divider " ~~ Pin No ~ Lx ~~~~ Ground i Inductor pin Thls pin is connected to the internal MOSFET switches Pin Name Pin Description EN GND VIN Lx PGND FB Enable Input Logic high enables the chip and ... PRODUCT SPECIFICATION FAN5307 ~ Pin Assignment Topvim TWVIEW S - b d Yn-23 FAN5307IFAN5307SX Pin No Pin Name Pin Description VIN GND Supply voltage input EN Enable Input Logic high enables the chip...

Ngày tải lên: 14/08/2014, 09:21

... 323 PRODUCT SPECIFICATION Pin Definitions - Pin lumbei FAN5236 (continued) Pin Name Pin Function Description 14 VIN Input Voltage Normally connected lo battery providing voltage feed-forward l ... 90% When using as a DDK converter with 3.3V Input, set up the converter for In- Phase synchronization by tying the VIN pin to +SV Output Inductor Selection The minimum practical output inductor ... operating conditions Parameter I Conditions unless ofhewise noted Min I TVD I Max I Units v Power Supplies VCC Current LDRV, HDRV Open VSEN forced above regulation point ViN Current - Sinking VIN...

Ngày tải lên: 14/08/2014, 09:21

... necessary to power a personal computer motherboard, and found in any PC box SIM card Single In- line Memory cards Smart battery A battery incorporating electronics capable of communicating, via a ... is on in which activating the “S” input will switch it to one stable state and activating the “R” input will switch it to the other state Silver box A metallic box containing all the AC-DC power ... 82, 363 378 Index I/O hub (IOH) 162 I2CBus 141 IEC 6100-2-3 standard 108 indium 11 inductors 184 inherently fast circuit 364 input capacitors 62 input conductors 61-62 input filters 61 integrated...

Ngày tải lên: 14/08/2014, 09:21

... MANAGING POWER ELECTRONICS VLSl and DSP-Driven Computer Systems Dr Nazzareno Rossetti This Page Intentionally Left Blank MANAGING POWER ELECTRONICS VLSl and DSP-Driven Computer Systems Dr ... of Desktop and Notebook Computers Power Management System Solution for a Pentium I11 Desktop System 158 Power Management System Solution for Pentium IV Systems (Desktop and Notebook) Desktop Systems ... of the power management engineer, continually challenged by the rising complexity of modern electronic appliances Scope In this book, power management is covered in its many facets, including semiconductor...

Ngày tải lên: 14/08/2014, 12:20

... buffer discussed in the previous section Inverting and Non-Inverting Inputs The opamp in Figure 3-1 is shown as an open loop Before closing the loop-connecting the inverting input to the output ... is a good idea to find out the inverting versus the noninverting input - v"- -1 I -K T7 Figure 3-1 Bipolar opamp schematic The arrows in Figure 3-1 help in determining the input sign; note that ... package 2.4 Ongoing Trends As wall-to-board power challenges will continue to escalate, MOSFET transistor processing and packaging solutions will continue evolving A system approach to power distribution...

Ngày tải lên: 14/08/2014, 12:20