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An Si–SiGe BiCMOS Direct-Conversion Mixer With Second-Order and Third-Order Nonlinearity
An Si–SiGe BiCMOS Direct-Conversion Mixer With Second-Order and Third-Order Nonlinearity

... communications. The bipolar common-emitter (CE) and differential-pair stages are commonly used in many RF building blocks such as low-noise amplifiers (LNAs) and mixers. Fig. 1 is the block diagram of a direct-conversion receiver. For a direct-conversion WCDMA system, the linearity requirements and ...
STUDY OF UPQC FOR POWER QUALITY IMPROVEMENT MIHIR
STUDY OF UPQC FOR POWER QUALITY IMPROVEMENT MIHIR

... V.Khadkikar et al. [23] proposed a control technique for Unified Power Quality Conditioner (UPQC), which is a combination of series APF and shunt APF. A control strategy based on unit vector template generation is discussed in this paper with the focus on the mitigation of voltage harmonics present ...
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IOSR Journal of Applied Physics (IOSR-JAP)
IOSR Journal of Applied Physics (IOSR-JAP)

... where G is called the memductance (for memory conductance). Properties of memristors Memristive devices are passive for all R>0. A memristive system can‘t store energy, like a capacitor or an inductor. This is quite obvious from the fact that V= 0 whenever I = 0 , and vice versa. The most important ...
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UNIT 3 : ANALOG INPUT

M-ECho: A Middleware for Morphable Data-Streaming in Pervasive Systems
M-ECho: A Middleware for Morphable Data-Streaming in Pervasive Systems

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IGC18T120T8Q High Speed IGBT in Trench and Fieldstop Technology

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Increasing High Speed Torque of Bipolar Stepper Motors

... chopper drive. A low value resistor in the ground lead of the H-Bridge converts the winding current into a proportional feedback voltage, and the feedback voltage is compared to a reference voltage (not shown). While the feedback voltage is less than the reference voltage, switches S1 and S4 apply t ...
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DSS60601MZ4 Features Mechanical Data

... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
Altech/ABL Sursum Miniature Circuit Breakers
Altech/ABL Sursum Miniature Circuit Breakers

... are coupled to the tripping latch pins of the VEA or MA to which they are attached, reliably producing trips at the drop-out voltage and preventing resetting when less than 85% line voltage is present. The Undervoltage Trip is provided with at least 6-inch pigtails of stranded fixture wire for hook- ...
Pignose G40V 40w Tube Amp
Pignose G40V 40w Tube Amp

... resistors that ranged from 100k for the 22uF cap to 680k for the 0.047uF cap. These resistor values eliminate switching noises and do not seem to have any noticeable effects on the sounds. The advanced treble cap/slope resistor mod requires a center-off 4PDT mini-toggle switch. The stock 33k slope r ...
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Info: not part of baseline

University of Misan College of Engineering Dep. of Electrical First
University of Misan College of Engineering Dep. of Electrical First

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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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