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RF current element design for independent control of current
RF current element design for independent control of current

... pulses (7), which allows selective excitation of specific regions of interest and optimization of B1 field homogeneity (4), has further contributed to the increased interest in parallel transmit coils (5). A parallel transmit coil with independent control of the rung current amplitude and phase may be ...
ZX5T953G Features Mechanical Data
ZX5T953G Features Mechanical Data

... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
FZT458 Features Mechanical Data
FZT458 Features Mechanical Data

... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
Electronic I - UniMAP Portal
Electronic I - UniMAP Portal

... source in the base circuit. Recall that small changes in the base current circuit causes large changes in collector current circuit. The small ac voltage causes the base current to increase and decrease accordingly and with this small change in current the collector current will mimic the input only ...
Motors and Generators - Instructor Guide
Motors and Generators - Instructor Guide

MAX686 DAC-Controlled Boost/Inverter LCD Bias Supply with Internal Switch General Description
MAX686 DAC-Controlled Boost/Inverter LCD Bias Supply with Internal Switch General Description

By BARRY SCHWEID, AP Diplomatic Writer
By BARRY SCHWEID, AP Diplomatic Writer

... glass passivation for hermetic seal properties and high structural strength  Voltage range: 50 – 4000 V  Glass body over-molded with plastic for easy handling ...
Invertig 201 AC/DC
Invertig 201 AC/DC

... turns the high frequency arc starting on. When the foot pedal is depressed, a high frequency arc will jump from the tungsten to the ground, initiating the arc. This makes it very easy to start the arc. Additionally, in the AC mode, the high frequency is only used to start the arc, unlike conventiona ...
User`s Manual - Metaphase Technologies
User`s Manual - Metaphase Technologies

... controllers together. To change, use a paperclip and insert it into the address hole on the front panel. Every push of the button will increment the address setting. Example: Pushing it four times will set the Address to Address 4. After reaching the desired address setting, push and hold the addres ...
Page: 1 User`s Manual Page: 1 VERSION 1.1.07.02.2012
Page: 1 User`s Manual Page: 1 VERSION 1.1.07.02.2012

... controllers together. To change, use a paperclip and insert it into the address hole on the front panel. Every push of the button will increment the address setting. Example: Pushing it four times will set the Address to Address 4. After reaching the desired address setting, push and hold the addres ...
ZXLD1366 Description Pin Assignments
ZXLD1366 Description Pin Assignments

... for the shutdown circuit. Quiescent supply current during shutdown is nominally 60μA and switch leakage is below 5μA. ...
Cutler-Hammer
Cutler-Hammer

... of voltage. It either increases (steps up) or decreases (steps down) AC voltage. A transformer does not generate electrical power. It transfers electrical power from one AC circuit to another through magnetic coupling. This method is when one circuit is linked to another circuit by a common magnetic ...
GENH Series Programmable DC Power Supplies 750W in a 1U half
GENH Series Programmable DC Power Supplies 750W in a 1U half

... • Advanced Parallel reports total current up to four identical units • Global Commands for Serial RS-232/RS-485 Interface • Independent Remote ON/OFF and Remote Enable/Disable • External Analog Programming and Monitoring (user selectable 0-5V & 0-10V) • Reliable Modular and SMT Design • 19" Rack Mou ...
ZXMP10A13F Product Summary Features
ZXMP10A13F Product Summary Features

Genesys - TDK
Genesys - TDK

... • Advanced Parallel reports total current up to four identical units • Global Commands for Serial RS-232/RS-485 Interface • Independent Remote ON/OFF and Remote Enable/Disable • External Analog Programming and Monitoring (user selectable 0-5V & 0-10V) • Reliable Modular and SMT Design • 19" Rack Mou ...
xr series iii - Magna
xr series iii - Magna

... these power supplies outside of a rack mount equipment enclosure will expose the user to high voltage and/or high current sources. Extreme caution must be used under these circumstances. Two or more XR Series power supplies may be connected in series. Regardless of the number of units or the voltage ...
Nickel Staineless Steel Wire Flux Cored Wire
Nickel Staineless Steel Wire Flux Cored Wire

... the joining of thin base metals in all positions, and for the filling of wide root openings. With material that is thicker than 1/8 in. 13 [mm], extreme care must be taken to prevent incomplete fusion. Since heat input is usually low, distortion of the work piece is minimized. The electrode feeds at ...
Zener Diodes
Zener Diodes

... The tunnel diode has negative resistance. It will actually conduct well with low forward bias. With further increases in bias it reaches the negative resistance range where current will actually go down. This is achieved by heavily doped p and n materials that creates a very thin depletion region. ...
PRECISION TIG 375 - Lincoln Electric
PRECISION TIG 375 - Lincoln Electric

... respirator may be required. Additional precautions are also required when welding on galvanized steel. 5. b. The operation of welding fume control equipment is affected by various factors including proper use and positioning of the equipment, maintenance of the equipment and the specific welding pro ...
DC Power Supplies
DC Power Supplies

... professional power supplies incorporate circuits that use analog-to-digital converters, and for these internal instruments the specifications are similar to those of a digital multimeter. The power supply displays measured values on its front panel and can also transmit them over its remote interfac ...
750kVA SG Series UPS with eBoost Technology
750kVA SG Series UPS with eBoost Technology

... The UPS system shall consist of a UPS module and a battery. The AC output of the UPS module shall be connected to the critical loads. The battery shall be connected to the DC input of the UPS. The UPS configuration shall be a single module or multiple paralleled UPS modules rated to supply the load ...
ZXTN10150DZ
ZXTN10150DZ

ZXLD1356/ ZXLD1356Q Description Pin Assignments
ZXLD1356/ ZXLD1356Q Description Pin Assignments

... voltage and external components, this can provide up to 30 watts of ...
Mesh Analysis
Mesh Analysis

ZXTP2014G Features Mechanical Data
ZXTP2014G Features Mechanical Data

... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
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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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