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LTM2885 - 6500VRMS Isolated RS485/RS422
LTM2885 - 6500VRMS Isolated RS485/RS422

... Note 4: This µModule transceiver includes over temperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when over temperature protection is active. Continuous operation above specified maximum operating junction temper ...
NCP1653(PFC controller)
NCP1653(PFC controller)

... This pin sources a current IS which is proportional to the inductor current IL. The sense currentIS is for overcurrent protection (OCP), overpower limitation (OPL) and PFC duty cycle://www.51wendang.com/doc/f7620cb6d9e460b5302d697car modulation. When IS goes above 200 mA, OCP is activated and the Dr ...
GC3510651086
GC3510651086

... power supplied to electrical equipment from the steady 50 Hz, sinusoidal waveform of voltage or current. These deviations may affect the safe or reliable operation of equipment such as computers. Thus terms like “poor power quality” mean that there is ample deviation from norms in the power supply t ...
PAM2306D Description Pin Assignments
PAM2306D Description Pin Assignments

... This formula has a maximum at VIN =2VOUT, where IRMS = IOUT/2. This simple worst-case condition is commonly used for design because even significant deviations do not offer much relief. Note that the capacitor manufacturer's ripple current ratings are often based on 2000 hours of life. This makes it ...
Rast 5 Power Relay 419 EA
Rast 5 Power Relay 419 EA

... All figures are given for coil without pre-energization, at ambient temperature +23°C, 50Hz. Other coil voltages on request. ...
MAX1205 +5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADC General Description
MAX1205 +5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADC General Description

... Fully differential switched-capacitor circuits (SC) are used for both the reference and analog inputs (Figure 2). This allows either single-ended or differential signals to be used in the reference and/or analog signal paths. The signal voltage on these pins (INP, INN, RFN_, RFP_) should never excee ...
this PDF file
this PDF file

... While the Ganz transformer system was first reported in the U. S. in the October 3, 1885 issue of the Electrical Review, New York, Stanley's patent applications followed on October 23, and November 23, 1885. The first alternating current system in the U. S. applying transformers was put into operati ...
TPS60240 数据资料 dataSheet 下载
TPS60240 数据资料 dataSheet 下载

... design uses four ceramic capacitors to provide ultralow output ripple yet high efficiency, while eliminating the need for inefficient linear regulators. A wide input supply voltage range of 2.7 V to 5.5 V makes the TPS6024x ideal for lithium-based battery applications. The TPS60240/2/3 operates down ...
LectureH
LectureH

... (if you did this in analysis section, say again in brief form!) -If you have suspicions and/or large discrepancy in your result, discuss here with reasonable quantitative estimates -You lose points by simply unsubstantiated or incorrect guess -Stick to scientific conclusions! Not opinions, no person ...
MAX6977 8-Port, 5.5V Constant-Current LED Driver with LED Fault Detection General Description
MAX6977 8-Port, 5.5V Constant-Current LED Driver with LED Fault Detection General Description

... to set which LEDs are on and which are off. The outputenable input OE gates all eight outputs on and off, and is fast enough to be used as a PWM input for LED intensity control. For safety-related applications requiring a watchdog timer, refer to the MAX6978 data sheet that includes a fail-safe feat ...
LTC3610 - 24V, 12A Monolithic Synchronous Step
LTC3610 - 24V, 12A Monolithic Synchronous Step

... Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5481178, 6100678, 6580258, 5847554, 6304066. ...
A Three-Phase Zero-Voltage and Zero
A Three-Phase Zero-Voltage and Zero

Control Plus Series Soft Patch III Manual Touch-Plate Lighting Controls
Control Plus Series Soft Patch III Manual Touch-Plate Lighting Controls

LTM8022 - 1A, 36V DC/DC uModule
LTM8022 - 1A, 36V DC/DC uModule

... If the desired output voltage is not listed in Table 1, set the output by applying an RADJ resistor whose value is given by the equation RADJ = 394.21/(VOUT – 0.79), where RADJ is in kΩ and VOUT is in volts. Verify the LTM8022’s operation over the system’s intended line, load and environmental condi ...
Supplementary Instructions for Reduced-Voltage
Supplementary Instructions for Reduced-Voltage

Circuit Analysis
Circuit Analysis

c-14-dbme-1st-year
c-14-dbme-1st-year

... Explain the Concept of Magnetism and Electromagnetism Explain the Magnetism and magnetic Fields. Sketch field pattern of Bar magnet. State Coulomb’s laws of magnetism. Define the terms Absolute and Relative Permeability of medium. Explain the concept of Lines of force & Magnetic Field. Define field ...
SiC Power Devices and Modules Application Note
SiC Power Devices and Modules Application Note

... 4.4.4 Comparison of turn-off loss (Eoff) with Si-IGBT power modules ............................... 24 5. Reliability of SiC-SBD ..................................................................................................................................... 25 5.1 dV/dt and dI/dt break-down ... ...
Conventional Magnets for Accelerators
Conventional Magnets for Accelerators

Capacitor Applications - HolyStone International
Capacitor Applications - HolyStone International

Rapper Control and PowerPlus
Rapper Control and PowerPlus

... Rapper timing should allow agglomeration of collected dust layers to into a uniform sheet so that it will drop into the hopper when rapped and minimize re-entrainment. Rapping too often prevents formation of this uniform sheet, causing more re-entrainment. Not rapping often enough will result in a t ...
GAMMA-RAD5 Complete Gamma Ray Spectrometer
GAMMA-RAD5 Complete Gamma Ray Spectrometer

Power Electronics - Key Technology for Renewable Energy
Power Electronics - Key Technology for Renewable Energy

Compendium of articles by Magma Design Automation
Compendium of articles by Magma Design Automation

... manually re-shaped. A few of the macros were manually fixed, while placement of other macros was reused using Relative Floorplanning Constraints derived from the previous iteration by the tool. This gave us the results seen in figure 6. Wider Aspect Ratio for a Better/Efficient Floorplan In a real d ...
Integra and Paladin Transducers
Integra and Paladin Transducers

... The multi function Integra 1560 and 1580 transducers offer uncomplicated operation and high accuracy <0.2% measurement of single and three-phase voltage, current, frequency, Watts, VAr, VA, energy and power factor, and total harmonic distortion measurement of both phase and system current and voltag ...
< 1 ... 759 760 761 762 763 764 765 766 767 ... 1974 >

Mains electricity



Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.
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