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Aalborg Universitet
Aalborg Universitet

... over a band more than 500 MHz. A high gain is also preferred to amplify the weak signal at the receiver and overcome the noise effects from subsequent stages. In addition, the noise figure of the LNA must be low since it plays a major role in defining the receiver’s sensitivity. Moreover, the LNA ha ...
FSSD07 1-Bit / 4-Bit SD/SDIO and MMC Dual-Host Multiplexer
FSSD07 1-Bit / 4-Bit SD/SDIO and MMC Dual-Host Multiplexer

... rail, such that hosts with different supplies can be interfaced to a common peripheral module or card. The peripheral card supply must be equal to or greater than the host(s) to minimize power consumption. The independent VDDC, VDDH1, and VDDH2 are defined by the supplies connected from the applicat ...
Lecture 13
Lecture 13

... • If the input is applied to the base of Q2 rather than the base of Q1, however, the voltage gain is not as high. – The resulting circuit is a CE amplifier with emitter degeneration, which has lower Gm. ...
Reference Guide - Texas Instruments
Reference Guide - Texas Instruments

... and MCU current and low-power mode current consumption provide excellent battery lifetime and allow for operation on small coin cell batteries and in energy-harvesting applications. The CC2640 device contains a 32-bit ARM® Cortex®-M3 processor that runs at 48 MHz as the main processor and a rich per ...
A Home-built Vibrating Sample Magnetometer
A Home-built Vibrating Sample Magnetometer

Networking Media (Presentation)
Networking Media (Presentation)

P85326
P85326

... CAUTION: Always operate audio amplifiers and speakers within their specified ratings. Excessive input may distort sound quality and may damage audio equipment. Do not exceed 100% of speaker input voltage per UL 1480. Improper input voltage can damage speaker. If distortion is heard, check for clippi ...
W. Li and D.J. Perreault, “Switched-Capacitor Step-Down Rectifier for Low-Voltage Power Conversion,” 2013 IEEE Applied Power Electronics Conference , pp. 1884-1891, March 2013.
W. Li and D.J. Perreault, “Switched-Capacitor Step-Down Rectifier for Low-Voltage Power Conversion,” 2013 IEEE Applied Power Electronics Conference , pp. 1884-1891, March 2013.

MAX44265 Evaluation Kit Evaluates: MAX44265 General Description Features
MAX44265 Evaluation Kit Evaluates: MAX44265 General Description Features

... General Description The MAX44265 evaluation kit (EV kit) provides a proven design to evaluate the MAX44265 low-power, MOS-input operational amplifier (op amp) in a 6-bump wafer-level package (WLP). The EV kit circuit is preconfigured as a noninverting amplifier, but can easily be adapted to other to ...
Performing Very Low Frequency Capacitance
Performing Very Low Frequency Capacitance

... Capacitance measurements on semiconductor devices are usually made using an AC technique with a bridge-type instrument. These AC instruments typically make capacitance and impedance measurements at frequencies ranging from megahertz down to possibly tens of hertz. However, even lower frequency capac ...
MAX2031EVKIT.pdf
MAX2031EVKIT.pdf

... and C9 are larger 0.01µF capacitors used for filtering lower frequency noise on the supply. ...
PM1200 power meter - Schneider Electric
PM1200 power meter - Schneider Electric

... This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment ge ...
KEY COMPONENTS FOR POWER FACTOR CORRECTION IN
KEY COMPONENTS FOR POWER FACTOR CORRECTION IN

... The installation of detuned (reactor-connected) capacitors is designed to force the resonant frequency of the network below the frequency of the lowest harmonic present, thereby ensuring no resonant circuit and, by implication, no amplification of harmonic currents. Such an installation also has a p ...
A Robust, Fast Pulsed Flip-Flop Design
A Robust, Fast Pulsed Flip-Flop Design

... Rajesh Garg Sunil Khatri Department of Electrical and Computer Engineering, Texas A and M University, College Station, TX ...
AN3234: Washing Machine Three-Phase AC Induction Motor Drive
AN3234: Washing Machine Three-Phase AC Induction Motor Drive

... controlled, brushless drives. In the past, washing machine designs employed two widely used drive systems. The older designs use electromechanically controlled two-speed single phase AC induction motors. This kind of drive system is no longer used for new machines and is only found in the least expe ...
Position, Velocity, and Acceleration Sensors
Position, Velocity, and Acceleration Sensors

... significant bit corresponds to the outermost track. Of course a 3 bit absolute encoder does not have enough resolution to be used in most industrial applications, but the concepts presented above can be readily extended to 8, 10 or 12 bit encoders. The unique bit pattern corresponding to a given ang ...
Chapter 4.7 - Communication Circuits
Chapter 4.7 - Communication Circuits

... Traditionally, an office environment has utilized two distinctly separate wired communications systems: telecommunications and data communications. Each had its individual hardware components complement, and each required its own independent transmission line system: twisted wire pairs for Telecom a ...
Towards Securing Low-Power Digital Circuits with Ultra
Towards Securing Low-Power Digital Circuits with Ultra

MAX3314E ±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceiver General Description
MAX3314E ±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceiver General Description

AN11496 Agile I/O Input / Output Characteristics
AN11496 Agile I/O Input / Output Characteristics

S.T.A.R. PATHFINDER variable trip test point faulted circuit indicators
S.T.A.R. PATHFINDER variable trip test point faulted circuit indicators

induction motor stator resistance estimation using pi estimator
induction motor stator resistance estimation using pi estimator

... In [12], Neural Network (NN) based stator current MRAS is used for speed estimation in sensorless induction motor drives. Rotor flux estimation is required for the speed observer. Using a voltage model for rotor flux estimation causes problems at low speed due to stator resistance sensitivity and th ...
Will-Burt - Blackwood Fire Company
Will-Burt - Blackwood Fire Company

Optimization of LDMOS Transistor in Power Amplifiers for Communication Systems
Optimization of LDMOS Transistor in Power Amplifiers for Communication Systems

... design of power amplifiers (PAs), which is considered as a heart of basestation. From economical point of view, a single wideband RF power module is more desirable rather than multiple narrowband PAs especially for multi-band and multi-mode operation. Therefore, device modeling has now become much m ...
P82623
P82623

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Alternating current



Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).
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