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Commande Vectorielle Non Linéaire de L`onduleur MLI à
Commande Vectorielle Non Linéaire de L`onduleur MLI à

... The identification theory that we have used on shunt APF is known as instantaneous power theory, or PQ theory. It is based on instantaneous values in three-phase power systems with or without neutral wire, and is valid for steady-state or transitory operations, as well as for generic voltage and cur ...
VO2223 Optocoupler, Power Phototriac
VO2223 Optocoupler, Power Phototriac

... Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use ...
Bias Current Effect on Gain of a CMOS OTA
Bias Current Effect on Gain of a CMOS OTA

... amplifiers requires efficient circuit design techniques [2]. A folded cascode configuration has been widely used in CMOS circuits. The reason is that the output capacitance plays the same role as the compensation capacitance [3]. This configuration also increases transconductance (g0) which in turns ...
Safe Operating Area for 1200-V Nonlatchup Bipolar
Safe Operating Area for 1200-V Nonlatchup Bipolar

question bank for electro magnetic induction and alternating current
question bank for electro magnetic induction and alternating current

MAX894L/MAX895L Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown General Description
MAX894L/MAX895L Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown General Description

... is limited by the internal current-limiting error amplifier to 1.5 x ILIMIT. When the fault condition is removed, the replica error amplifier sets the current limit back to ILIMIT. For a high ∆VDS/∆t during an output short-circuit condition, the switch turns off and disconnects the input supply from ...
FSD176MRT Green-Mode Fairchild Power Switch (FPS™) Features
FSD176MRT Green-Mode Fairchild Power Switch (FPS™) Features

AN60-034 - Transient Protection of Darlington gain block amplifiers
AN60-034 - Transient Protection of Darlington gain block amplifiers

... Let’s review that transient process when the current source has sharp ramp (small rise time). The worst case is when the current source jumps from zero to the nominal current value instantaneously. This can happen if we apply the current source by plugging into a connector manually or apply the cur ...
Electron emission from lead–zirconate–titanate ceramics
Electron emission from lead–zirconate–titanate ceramics

... reducing any external field outside the ceramic. In what follows we shall refer to this as the equilibrium state. The emission of electrons is triggered by pulsing the ferroelectric with a rapidly rising electrical pulse providing an applied field comparable to the coercive field (;13106 V/m). The r ...
2N3906
2N3906

... cause the failure of the life support device or system, or to affect its sustain life, and (c) whose failure to perform when properly used in safety or effectiveness. accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the us ...
ZXLD1322 - Diodes Incorporated
ZXLD1322 - Diodes Incorporated

... The ZXLD1322 is an inductive DC-DC converter, with an internal switch, designed for driving single or multiple LEDs in series up to a total of 700mA output current. Applications cover input voltages ranging from 2.5V to 15V. Depending upon supply voltage and external components, this can provide up ...
Problem B - Geneva Area City Schools
Problem B - Geneva Area City Schools

... 9. A wind turbine is built to service farmers in England. The turbine is connected to a generator, which can supply a rms current of 1.3 A on a 12 kΩ load. If the rms potential difference is 15.6 kV, find the maximum output emf provided by the wind turbine. Calculate the maximum ac current. How much ...
How to measure output voltage from a VFD to a motor
How to measure output voltage from a VFD to a motor

Temperature Insensitive Current Reference for the 6.27 MHz Oscillator
Temperature Insensitive Current Reference for the 6.27 MHz Oscillator

... The two kind of temperature-compensated current reference had been designed which have been presented in the previous Sections. The current references have been design -ed and simulated by HSPICE with reference to the models of the devices available in a 0.18 um CMOS technology. The reference curren ...
New Breed of Network Fault-Tolerant Voltage-Source
New Breed of Network Fault-Tolerant Voltage-Source

Microelectromechanical Devices
Microelectromechanical Devices

Microelectromechanical Devices
Microelectromechanical Devices

... signals of one frequency (usually line frequency) to ac signals of variable frequency. These variable frequency ac signals can then be used to directly control the speed of ac motors. Thyristor-based cycloconverters are typically used in low speed, high power (multi-MW) applications for driving indu ...
Revisions to ANSI/IEEE C37.100-XXXX and ANSI/IEEE - pes-psrc
Revisions to ANSI/IEEE C37.100-XXXX and ANSI/IEEE - pes-psrc

... proximity to a point of large current injection into the ground and any remote ground point. GPR is usually caused by a short circuit of an energized power conductor to ground and is the result of the injected current flowing through the impedance of the ground circuit. Inductive coupling (electric ...
ESBT STC03DE170 IN 3-PHASE AUXILIARY POWER SUPPLY
ESBT STC03DE170 IN 3-PHASE AUXILIARY POWER SUPPLY

... For converters in which inductor current is continuous, controlling peak current is nearly equivalent to controlling average current. Therefore, when such converters employ current-mode control, the inductor can be treated as an error-voltage-controlled-current-source for the purposes of small-signa ...
DC–DC Converter: Four Switches V Capacitive Turn-Off
DC–DC Converter: Four Switches V Capacitive Turn-Off

... The paper gives a theoretical analysis, and experimental data on a 1.5-kW example that was built and tested: 600-Vdc input, 60-Vdc output at up to 25 A, and 50-kHz switching frequency. The measured performance agreed well with the theoretical predictions. The measured efficiency was 93.6% at full lo ...
AP6503 Description Pin Assignments
AP6503 Description Pin Assignments

How to measure output voltage from a VFD to a motor
How to measure output voltage from a VFD to a motor

... • A dc voltage value that is too low can cause the drive to trip. At the cause, the mains input voltage is probably too low, or the input sine wave might be distorted by flat topping. • If the ripple’s peaks have a different repetitive level, one of the rectifier diodes is possibly malfunctioning ...
AudioNoteKits DIY Guide
AudioNoteKits DIY Guide

... There are many other companies in the audio industry that make FILM caps for signal path and many DIY’ers will try different caps to get an understanding of the different Sounds – Mundorf for example make a range of FILM caps also and we use their Mundorf Supreme cap in a number of situations. Unlik ...
PPS - Institut Mihajlo Pupin
PPS - Institut Mihajlo Pupin

Herbert Stemmler
Herbert Stemmler

... known from synchronous motors directly connected to the AC system, cannot occur, when impressing the phase angle ie of stator current phasor I  Ie j ie relative to the excitation field axis of the rotor! The controls which are in practical use are very different and sophisticated [35, 36]. But ba ...
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Mercury-arc valve



A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.
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