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100 - 400 Amps, 600 VAC
100 - 400 Amps, 600 VAC

... • Standard time delay neutral will reduce switchover problems. • Logic control with inphase monitor regulates switch functions and allows adjustable switch settings with LED indicators. • Control switches located on the front of the door for ease of operation. • All switches are UL 1008 listed a ...
Power Sequence and Reset Utilizing the Intel EP80579 Integrated
Power Sequence and Reset Utilizing the Intel EP80579 Integrated

... control signals. With fewer power rails, the power sequence was also less complicated. Currently, due to an increased need to support a variety of logic voltage levels—some being legacy, some being new lower levels for supporting higher speeds such as DDR, and some being high speed differentials—the ...
ics854104a.pdf
ics854104a.pdf

AAT4650 数据资料DataSheet下载
AAT4650 数据资料DataSheet下载

... (PCMCIA) power switch. It is used to select between two different voltage inputs, each between 2.7V and 5.5V. An internal switch powers the circuitry from whichever input voltage is higher. The device’s output, VCC, is slew rate controlled and current limited, in compliance with PC card specificatio ...
2C YWX - Diodes Incorporated
2C YWX - Diodes Incorporated

... applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any prod ...
MAX1946 Single USB Switch with Autoreset and Fault Blanking in Tiny TDFN
MAX1946 Single USB Switch with Autoreset and Fault Blanking in Tiny TDFN

... When the MAX1946 die temperature exceeds +160°C the switch turns off and FAULT goes low. Thermal shutdown does not utilize the 20ms fault-blanking timeout period. When the junction temperature cools by 15°C the switch turns on again and FAULT returns high.The switch cycles on and off if the overload ...
4-20mA Current Transmitters with Sensor Excitation and Linearization
4-20mA Current Transmitters with Sensor Excitation and Linearization

... XTR114 allow operation directly from personal computer power supplies (12V ±5%). When used with the RCV420 Current Loop Receiver (Figure 7), load resistor voltage drop is limited to 3V. ...
Test Procedure for the NCN4555GEVB  Table 1: Required Equipment 12/27/2005
Test Procedure for the NCN4555GEVB Table 1: Required Equipment 12/27/2005

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Al-Balqa` Applied University Faculty of Engineering Technology
Al-Balqa` Applied University Faculty of Engineering Technology

Commercial Spa Blower Selection Guide
Commercial Spa Blower Selection Guide

... spas and hot tubs Most spas and hot tubs require regenerative blowers to provide the pressure and flow needed to agitate the water. Sizing a blower can be as simple as following these steps: 1. Determine the number of jets and/or orifices in the spa. 2. Calculate the total area of all the orifices ...
AAT2605 数据资料DataSheet下载
AAT2605 数据资料DataSheet下载

... GND. The COUT capacitor connection to the LDO regulator ground pin should be made as direct as practically possible for maximum device performance. The AAT2605's LDO regulators have been specifically designed to function with very low ESR ceramic capacitors. Although the device is intended to operat ...
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PDF

... Over recent years, wind energy has been considered as one of the most signicant renewable energy sources. Among the existing wind power generation systems, its generators can be categorized into four main types [1], [2]: 1) the doubly fed induction generator 2) the squirrel cage induction generator ...
MAX1519/MAX1545 Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies General Description
MAX1519/MAX1545 Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies General Description

... The MAX1519/MAX1545 are dual-phase, Quick-PWM™, step-down controllers for desktop and mobile Pentium® 4 (P4) CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The Quick-PWM control sch ...
HF2013DX-A HF POWER AMPLIFER - ham
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... It is a device that converts energy form one form into another, to make it readable for a measurement. The differences between sensors and transducers are often very slight. A sensor is performing a transducing action, and the transducer must necessarily sense some physical quantity. The shade of di ...
Bat Echolocation: Triangulation Using Ultrasonic
Bat Echolocation: Triangulation Using Ultrasonic

... computer where the difference in time between the signals can be used to locate the transmitting source in space. I will show that this system can be used to triangulate the position of a bat flying in the wild and that this system can be adapted for field work in the study of bat echolocation. Curr ...
TPS65023EVM-205 数据资料 dataSheet 下载
TPS65023EVM-205 数据资料 dataSheet 下载

ECOMPACT® 23E/60E
ECOMPACT® 23E/60E

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Surge Protection Module

... Satellite-based Lightning Imaging Sensor (LIS) observations are used to study lightning activity in different regions of the world. This research has shown clear differences in both flash frequency and optical radiance in different regions. The flash activity in different regions shows a clear diffe ...
basics_of_power_qual.. - IDEAL INDUSTRIES, INC.
basics_of_power_qual.. - IDEAL INDUSTRIES, INC.

... What is Power Quality Except for complete failure, most really don’t pay close attention to the power we are supplied. But if we were in the middle of an important document or key manufacturing process it would be more than a simple announce. A knowledge of power quality is necessary to identify an ...
Experiment 1 - RPI ECSE - Rensselaer Polytechnic Institute
Experiment 1 - RPI ECSE - Rensselaer Polytechnic Institute

... o Use traces to normalize all three currents by dividing them by the current at the base I(Q1:b) or IB(Q1). Also, negate the normalized emitter current so that all three traces are positive. o You should be able to identify a small range of voltages for which the normalized magnitude of the collecto ...
Advanced re-clocking for TDA1541 based CD players
Advanced re-clocking for TDA1541 based CD players

1863 and 1864 Megohmmeters User and Service Manual
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... The energy stored in a capacitor connected to the terminals may be LETHAL. Always set the function switch to DISCHARGE before you connect or disconnect the unknown. Otherwise the terminals of the Megohmmeter are under high voltage. ...
TPS6212x 15-V, 75-mA Highly Efficient Buck
TPS6212x 15-V, 75-mA Highly Efficient Buck

... which enables switching frequencies of up to 800 kHz, excellent transient response and AC load regulation at operation with small output capacitors. At high load currents the converter operates in quasi fixed frequency pulse width modulation (PWM) mode operation and at light loads in pulse frequency ...
OFSTP-18
OFSTP-18

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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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