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LTC4080
LTC4080

Glossary of Terms For the Electric Utility Industry
Glossary of Terms For the Electric Utility Industry

... A standard system used in the United States for designating the size of an electrical conductor based on a geometric progression between two conductor sizes. AMF (Lighting) – Average Maintained Foot-candles Amorphous Semiconductor – A non-crystalline semiconductor material used in photovoltaic panel ...
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... In work on homogeneous systems, much work has been directed at techniques that reduce power and energy consumption by applying dynamic voltage/frequency scaling (DVFS) techniques to lower CPUs’ voltages/frequencies. With the growing prevalence of such heterogeneous architectures, there is a need to ...
AD7679 数据手册DataSheet下载
AD7679 数据手册DataSheet下载

... In all modes except MODE = 3, this output is used as Bit 10 of the parallel port data output bus. When MODE = 3 (serial mode), this output, part of the serial port, is used as a serial data output synchronized to SCLK. Conversion results are stored in an on-chip register. The AD7679 provides the con ...
Digital Pulse Processing in Nuclear Physics
Digital Pulse Processing in Nuclear Physics

... that are then acquired, saved and analyzed by a computer. In most applications, the quantities  of  interest  are  the   particle  energy  (proportional  to  the  charge  released  by  the  particle  in  the detector) and the time of arrival; in  some cases the acquisition is restricted to the simpl ...
Circuits for multiple valued logic—A tutorial and appreciation
Circuits for multiple valued logic—A tutorial and appreciation

... sufficiently powerful and general purpose logic. Though the search for such means has proceeded in parallel with every other development in the multivalued field in the last thirty years, there is reason to believe that the pace is quickening and that success, by some measure, is sensibly upon us. I ...
Bicycle Powered Generator for the University Farm
Bicycle Powered Generator for the University Farm

LTC1066-1 - 14-Bit DC Accurate Clock
LTC1066-1 - 14-Bit DC Accurate Clock

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Operational Amplifiers
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Ethernet force-distance measurement system, 1 counter input, 4
Ethernet force-distance measurement system, 1 counter input, 4

... in µs-Bereich M12 female connector, 8-pin Edelstahl • Sampling frequency max. 788 Hz/channel (max. 2 channels simultaneously) ...
Power Transducer User`s Guide
Power Transducer User`s Guide

... Prior to reading further in this booklet, please familiarize yourself with these basic terms of electricity and ac power measurement. Ampere—The basic unit used to measure current, often abbreviated as “amp” or “A.” It equals a unit of electrical current or the rate of flow of electrons. One volt ac ...
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OP-AMP
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... perform mathematical operations of addition, subtraction, multiplication, division, differentiation and integration. • High performance linear amplifier that requires a power source to operate. ...
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OPA356-Q1
OPA356-Q1

... shutdown circuit is provided to protect the OPA356 from dangerously high junction temperatures. At 160°C, the protection circuit will shut down the amplifier. Normal operation will resume when the junction temperature cools to below 140°C. ...
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MAX17019 High-Input-Voltage Quad-Output Controller General Description Features
MAX17019 High-Input-Voltage Quad-Output Controller General Description Features

... makes it an excellent choice for automotive applications. The internal switching regulators include 5V synchronous MOSFETs that can be powered directly from a single Li+ cell or from the main 3.3V/5V power stages. Finally, the linear regulator is capable of sourcing and sinking 2A to support DDR ter ...
BDTIC www.BDTIC.com/infineon  Power Management & Multimarket
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MAX17019 High-Input-Voltage Quad
MAX17019 High-Input-Voltage Quad

document
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... Vbd is the breakdown voltage and Ve the excess bias. The anode, Vpix , is connected to an active quenching circuit used to stop an avalanche quickly enough to prevent device destruction with a long enough hold-up time to enable detection. During the detection cycle, Vpix reaches Ve in less than 1 ns ...
Crown FM4000 Manual
Crown FM4000 Manual

... in FM transmitter design offering modularity, ease of use, and long-term reliability. The FM4000 package includes two (2) PA2000 amplifiers, two (2) PS2000 power supplies, a combiner with coupler, a transmitter controller, and all necessary cabling. The PA4000 transmitter package requires no tuning ...
rgv12100 / 13100t generators
rgv12100 / 13100t generators

IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
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CleanEffects AccuClean Service and Repair
CleanEffects AccuClean Service and Repair

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Pulse-width modulation



Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.
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