• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Single Phase Bidirectional PWM Converter for Microgrid With
Single Phase Bidirectional PWM Converter for Microgrid With

Keep your Switch Mode Supply stable with a Critical-Mode
Keep your Switch Mode Supply stable with a Critical-Mode

... bucket man to provide the tank with a higher flow. In other words, the bucket operator will fill his container longer (ON time increases). BUT, since by experience he keeps his working period constant, the time he will spend in flushing into the tank will naturally diminish (OFF time decreases), so ...
Full Text PDF - AE International Journal of Science and Technology
Full Text PDF - AE International Journal of Science and Technology

A3918 - Allegro MicroSystems
A3918 - Allegro MicroSystems

... close to the device supply pin as possible. The ceramic capacitor should be closer to the pin than the bulk capacitor. This is necessary because the ceramic capacitor will be responsible for delivering the high frequency current components. Sense Pin The sense resistor, RSENSE, should have a very lo ...
Stray Voltage - Pacific Gas and Electric Company
Stray Voltage - Pacific Gas and Electric Company

A Low-Mu Triode Preamp - Pete Millett`s DIY Audio pages
A Low-Mu Triode Preamp - Pete Millett`s DIY Audio pages

Pneumatics and the FIRST Competition
Pneumatics and the FIRST Competition

... Vibration Isolators. The Compressor is a reciprocating device and will cause sympathetic vibrations throughout your assembly unless they are used. ...
Electrical Current Requirements of Model Rocket Igniters
Electrical Current Requirements of Model Rocket Igniters

... compared to all of the other electric matches tested. With out a doubt, this is the best electric match to use for ejection charges when avionics are used. It’s relatively low current and short duration are exceptional. The Oxral match does have one detraction when used as an ejection charge initiat ...
Diode Applications Diode Switching As we have already seen the
Diode Applications Diode Switching As we have already seen the

NJM3773
NJM3773

... As the filtering action introduces a small delay, the peak value across the sensing resistor, and hence the peak motor current, will reach a slightly higher level than what is defined by the reference voltage. The filtering delay also limits the minimum possible output current. As the output will be ...
Aalborg Universitet
Aalborg Universitet

... creation of safe environment for their smooth acceptance is one of critical smart grid (SG) objectives [2]. Combined impact of a large number of randomly connected HEV chargers on the distribution network is the main concern [3], [4]. Fast charging stations (FCS) with power rating of up to 100 kW ha ...
25 A, 60 V NPN Bipolar Power Transistor
25 A, 60 V NPN Bipolar Power Transistor

... The data of Figure 6 is based on TC = 25_C; TJ(pk) is variable depending on power level. Second breakdown pulse limits are valid for duty cycles to 10% but must be derated when TC w 25_C. Second breakdown limitations do not derate the same as thermal limitations. For inductive loads, high voltage an ...
A Single Stage PFC Converter FED VSI based PMBLDC Motor Drive
A Single Stage PFC Converter FED VSI based PMBLDC Motor Drive

MMST4401
MMST4401

... and other safety devices), please be sure to consult with our sales representative in advance. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating c ...
Power Systems Study Specification
Power Systems Study Specification

Form B - PowerStream
Form B - PowerStream

... PowerStream will consider owning and operating all new lines if they are designed and constructed to PowerStream standards and are located on municipal roadway right-of-ways. This may change your PCC location. You must contact PowerStream to discuss. For details email [email protected] or cal ...
IPoD coil
IPoD coil

Research on the Differential Protection Algorithm of Multi
Research on the Differential Protection Algorithm of Multi

Glossary
Glossary

1. Explain the constructional details of Alternator in detail with neat
1. Explain the constructional details of Alternator in detail with neat

Linear Circuit Analysis
Linear Circuit Analysis

... Linear Circuits • Most circuits we will study are linear • Linear circuits contain linear elements – those that have a linear relationship between their voltage and their current – Resistors – Voltage and Current Sources – Dependent sources that depend on a voltage or current (but not if they depen ...
IS 6008 (1989): Arc Welding Power Source, Single Operator
IS 6008 (1989): Arc Welding Power Source, Single Operator

Digital Outputs (7
Digital Outputs (7

... single display, it is still seven individual LEDs within a single package and as such these LEDs need protection from over-current. ...
Load Switching Helps Implement Hot Swaping
Load Switching Helps Implement Hot Swaping

... inserted into the larger system, a board's hot swap controller must ensure that power at the connector is stable before being distributed to other onboard systems and commanding the board to initialize. For boards drawing little current, power can be switched onboard with digitally switched MOSFETs. ...
What is an electric shock?
What is an electric shock?

... Although the FELV part of a circuit uses an extra-low voltage, it is not adequately protected from accidental contact with higher voltages in other parts of the circuit. Therefore the protection requirements for the higher voltage have to be applied to the entire circuit. Examples for FELV circuits ...
< 1 ... 245 246 247 248 249 250 251 252 253 ... 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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report