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Chapter 8 – Methods of Analysis and Selected Topics (dc)
Chapter 8 – Methods of Analysis and Selected Topics (dc)

Kirchhoff`s Laws
Kirchhoff`s Laws

Instantaneous Current-Sharing Control Strategy for Parallel
Instantaneous Current-Sharing Control Strategy for Parallel

... features of N+X redundancy operation and modularity [1], [2]. Due to the voltage source nature, proper current sharing is of extreme Manuscript received October 25, 2011; revised January 10, 2012 and March 24, 2012; accepted May 5, 2012. Date of current version September 11, 2012 Recommended for pub ...
Lesson 1 Fundamental..
Lesson 1 Fundamental..

... static electricity. The charging of a capacitor is an example. The separation of charge between clouds and the earth before a lighting discharge is a static electricity. When the charges are in motion (changing with time relative to one another) we have variable electricity. ...
RM3407 - Rectron
RM3407 - Rectron

... changes. Rectron Inc or anyone on its behalf assumes no responsibility or liability for any errors or inaccuracies. Data sheet specifications and its information contained are intended to provide a product description only. "Typical" parameters which may be included on RECTRON data sheets and/ or sp ...
Modeling Current Transformer (CT) Saturation for Detailed
Modeling Current Transformer (CT) Saturation for Detailed

Description - West Texas Gas
Description - West Texas Gas

... The locations of current in-flow and out-flow on the affected line may be very close to each other, or they can be widely separated, perhaps several miles apart. It is also possible, especially near the area of a foreign pipeline’s rectifier, for foreign current to get onto a neighboring pipeline by ...
Tektronix MBD: Products > Current Measurement Systems AM5030
Tektronix MBD: Products > Current Measurement Systems AM5030

... simple command set, you can configure and confirm the settings of the amplifier or read the instrument's serial number. You can determine whether the current probe is open or closed, use bus commands to initiate ...
POOR & BAD CIRCUITS
POOR & BAD CIRCUITS

New Comparison of HVDC and HVAC Transmission System
New Comparison of HVDC and HVAC Transmission System

... synchronized to neighboring networks even though their physical distances between them is quite small. This occurs in Japan where half the country is a 60 hz network and the other is a 50 hz system. It is physically impossible to connect the two together by direct a.c. methods in order to exchange e ...
STW2040
STW2040

... Figure 10. Inductive load switching time Figure 11. Resistive load switching time ...
AVR-20 ALTERNATOR VOLTAGE REGULATOR
AVR-20 ALTERNATOR VOLTAGE REGULATOR

Chapter 21
Chapter 21

a high-efficiency resonant switched capacitor converter
a high-efficiency resonant switched capacitor converter

to notes
to notes

... used on the high side of the transformer, and protection devices are used on the low side, but substations supplying large amounts of load may have protection devices on both sides of the transformer. Special substation designs to achieve high reliability may utilize multiple circuit breakers, as sh ...
1500 Watt MOSORB® Transient Voltage Suppressor, 9.1 V Unidir
1500 Watt MOSORB® Transient Voltage Suppressor, 9.1 V Unidir

... operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems ...
avr-20 alternator voltage regulator
avr-20 alternator voltage regulator

TL431A-Q1 数据资料 dataSheet 下载
TL431A-Q1 数据资料 dataSheet 下载

... ‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to ...
BDTIC www.BDTIC.com/infineon Special Report:
BDTIC www.BDTIC.com/infineon Special Report:

Electrical Hazards and Arc Flash Awareness
Electrical Hazards and Arc Flash Awareness

OPS-A Series Arc Lamp Power Supplies
OPS-A Series Arc Lamp Power Supplies

Transformer Notes
Transformer Notes

... The second option is the more feasible one as a smaller transformer needs to be need be purchased which is much cheaper than the purchase of a brand new big transformer. In paralleling transformers, however, some basic rules need to be followed. Obviously the voltage and turns ratio need to be the s ...
Low Power Pulse Width Modulator
Low Power Pulse Width Modulator

Zener Diode Voltage Regulators
Zener Diode Voltage Regulators

... typical forward voltage at room temperature with a current of around 1 mA is around 0.6 volts. In the reverse bias condition the Zener diode is an open circuit and only a small leakage current is flowing as shown on the exaggerated plot. As the breakdown voltage is approached the current will begin ...
ELECTRICITY Section 1 - Introduction
ELECTRICITY Section 1 - Introduction

< 1 ... 276 277 278 279 280 281 282 283 284 ... 449 >

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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