• 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
Development of Differential Amplifier Based the Second Generation Current Conveyors Wanlop Surakampontorn
Development of Differential Amplifier Based the Second Generation Current Conveyors Wanlop Surakampontorn

... single cell low voltage battery. Therefore, traditional voltage mode techniques are going to be replaced by the current mode approach. Second generation current conveyor (CCII) has shown to be one of the major basic circuit building blocks for current-mode signal processing, in particular for low po ...
Inductor Discharging
Inductor Discharging

Improvement of Voltage Stability by the Advanced High Side Voltage
Improvement of Voltage Stability by the Advanced High Side Voltage

... parallel operation of two generators and four generators. The results on two generators operation is as follows and mainly verifies the characteristics of the advanced cross current suppression function. (a) The VH follows against a step of the VHref within several seconds and is smoothly controlled ...
Improving Control Dynamics of PMSM Drive by Estimating Zero
Improving Control Dynamics of PMSM Drive by Estimating Zero

IEEE Transactions on Magnetics
IEEE Transactions on Magnetics

switching frequency effects and efficiency analysis of quadratic buck
switching frequency effects and efficiency analysis of quadratic buck

... Generally, the source to power the laptop is either a battery or an AC adapter. The existing non-isolated dcdc converters like buck, multi-phase non-coupled and coupled buck [3-12] are unsuitable for large input voltage reduction (19V-1V) because of minimum turnon time requirement of the switch. Thi ...
AAT4610 数据资料DataSheet下载
AAT4610 数据资料DataSheet下载

... demanding more current than ILIM, the voltage at the output drops. This causes the AAT4610 to dissipate a larger than normal quantity of power, and results in increased die temperature. When the die temperature exceeds an over-temperature limit, the AAT4610 will shut down until is has cooled suffici ...
Current transformer relaying accuracies
Current transformer relaying accuracies

... This discussion will deal primarily with current transformers having a rated secondary current of 5 A. A supplementary discussion of current transformers with rated secondary current of 1 A is also included. IEEE C57.13 CT relaying accuracy classes IEEE defines two fundamental relaying accuracy desi ...
A Novel Power Factor Control Scheme For High
A Novel Power Factor Control Scheme For High

Interharmonics: Theory and Modeling
Interharmonics: Theory and Modeling

... some new problems, such as subsynchronous oscillations, voltage fluctuations, and light flicker, even for low-amplitude levels. Interharmonics can be observed in an increasing number of loads in addition to harmonics. These loads include static frequency converters, cycloconverters, subsynchronous c ...
M24098107
M24098107

... which is series connected to a thyristor-controlled series compensator in order to enhance the inductive working range. Nevertheless, the switching frequency of VCBs is limited by their mechanical properties. In order to achieve a higher switching frequency, more VCBs are switched in parallel to eac ...
Accurate Low-Resistance Measurements Start with Identifying
Accurate Low-Resistance Measurements Start with Identifying

... devices such as thermistors. The test currents used in low-resistance measurements are often much higher than those used for high-resistance measurements, so the resulting power dissipation and temperature increase in the device can cause the device’s resistance to change. Most DMMs don’t provide th ...
series rated combinations
series rated combinations

... series rated and fully rated systems. Although the upstream and downstream devices have different interrupting ratings, they both have the same time-current trip characteristic. Whether the downstream device is fully rated or series rated, coordination and selectivity remain the same. Series Rated S ...
MAX256 3W Primary-Side Transformer H-Bridge Driver for Isolated Supplies General Description
MAX256 3W Primary-Side Transformer H-Bridge Driver for Isolated Supplies General Description

D2-02-14
D2-02-14

... 3. Capacitor towers, uncharged switching mode, in accordance with the demand of reactive power capacity of linear compensation, but not supply real-time compensation. 4. Step-up transformer capacity of 63MVA,the ratio is: (132kV : 1700 /√3)kV). 5. Single-phase MCR. 6. Clamp resistor, which is used t ...
Exam 3 review
Exam 3 review

DC and AC Motor Drives
DC and AC Motor Drives

... Three-Phase Drives • The armature circuit is connected to the output of a three-phase controlled rectifier. • Three-phase drives are used for high-power applications up to megawatt power levels. • The ripple frequency of the armature voltage is higher than that of single-phase drives and it require ...
III. Proposed controller design
III. Proposed controller design

VT6T12
VT6T12

... Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no respo ...
tech bulletin TB-D1.fm
tech bulletin TB-D1.fm

Casino Otown - Craps Virtual Player
Casino Otown - Craps Virtual Player

... !Input circuit: Grounded-grid amplifier has bandswitched tuned input networks. Each network is broadlytuned to cover an amateur band. Input network acts as low-pass filter, reducing harmonics from exciter. Some older amplifiers may not present 50Ω resistive load to exciter (especially on WARC bands* ...
Plasma Display Documentation
Plasma Display Documentation

... most difficult steps. You don't actually have to worry about finding inert gases like Neon or Xenon or Krypton because you can easily ionize low-pressure air quite nicely. In fact, I prefer Nitrogen and air is mostly just that. Air makes plasma filaments, which are very tightly focused and bright, w ...
Onboard welder using a GM Delco 140 Amp alternator
Onboard welder using a GM Delco 140 Amp alternator

... Finding the right one... Alternators are capable of generating increasingly higher voltages relative to the their RPM. When they're used in automotive charging circuits they are always regulated by an external or internal regulator circuit to maintain output voltage below 15 volts so that the batter ...
SD830 – SD860 Product Summary Features and Benefits
SD830 – SD860 Product Summary Features and Benefits

irf.com - Newark
irf.com - Newark

< 1 ... 174 175 176 177 178 179 180 181 182 ... 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