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EMF5 - Rohm
EMF5 - Rohm

... 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 ...
Techniques for Deriving 3.3V from 5V Supplies
Techniques for Deriving 3.3V from 5V Supplies

... both 16μA shutdown and 50μA standby currents for system sleep modes. Unlike other linear regulators, the LT1129-3.3 combines both low dropout and low voltage operation. Small input and output capacitors facilitate compact, surface mount designs. For the LT1129-3.3, dissipation amounts to a little un ...
Electric Current
Electric Current

... settings. Protective devices, such as fuses and thermal overload relays, work because of the heating effect of current, but current measurements usually rely on the magnetic field generated by the current passing through a conductor. Current transformers (CT)1 are used to estimate this current. Howe ...
X4 Drives Specification Sheet
X4 Drives Specification Sheet

... survive in the harsh industrial world makes them ideal when cleanliness is extremely important, such as the Food and Beverage industry where high pressure washings are needed on a regular basis. The X4 drives, through 100 HP, exceed the specifications of their rated UL Type 4X / IP66 Indoor and Outd ...
ii. indirect current control
ii. indirect current control

Forward Converter - Muhammad Kumail Haider
Forward Converter - Muhammad Kumail Haider

... A forward converter is a power electronics circuit which is used to step up or step down DC voltage at the output by controlling the duty cycle of semiconductor switches. Switches are realized using a transistor and a diode, and given proper control circuitry is applied at the gate of the transistor ...
Diode 600V 5A VF;1.6V Single TP
Diode 600V 5A VF;1.6V Single TP

... customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures tha ...
dual jfet-input operational amplifier
dual jfet-input operational amplifier

... WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO ...
to full program of the technical sessions as a PDF file
to full program of the technical sessions as a PDF file

... S. Wenig, R. Sander, A. Frank, M. Suriyah, T. Leibfried ...
Arc Welding
Arc Welding

... extinguishes. Now, restrict your raising of the electrode tip to a maximum of 6 mm after striking the arc and endeavor to hold it steady at that point for about 10 seconds. This will necessitate feeding the electrode into the arc as the end burns off. Practice striking and holding an arc until it be ...
True RMS - Test Equipment Depot
True RMS - Test Equipment Depot

Group 1 - UCF EECS
Group 1 - UCF EECS

... • We wanted to work with a fuel cell – Fuel cells have a higher efficiency than diesel or gas engines – Most fuel cells operate silently, compared to internal combustion engines – The maintenance of fuel cells is simple since there are few moving parts in the system ...
Cascade Cockcroft–Walton Voltage Multiplier Applied to
Cascade Cockcroft–Walton Voltage Multiplier Applied to

... dc applications. However, the major drawback is that a high ripple voltage appears at the output when a low-frequency (50 or 60 Hz) utility source is used. ...
Paper Title (use style: paper title)
Paper Title (use style: paper title)

... and the waveform of the line voltage. Harmonics have a negative effect on the operation of the electrical system and the power factor as well therefore; an increasing attention is paid to their generation and control. . Unity power factor with lower harmonic current or low input current total harmon ...
triggering boards for thyristors
triggering boards for thyristors

... A pulse transformer insures the 4.5kV insulation between the power and the control command. The low leakage inductance of the transformer makes it possible to get a di/dt compatible with most of high power thyristors. ...
TD62083AFNG,TD62084AFNG - Toshiba America Electronic
TD62083AFNG,TD62084AFNG - Toshiba America Electronic

... • Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively “Product”) without notice. • This document and any information herein may not be reprod ...
AP1 FR Review Probs
AP1 FR Review Probs

MPPT_component_selection
MPPT_component_selection

... chip sockets are are available at places like Radio Shack and digikey. Sockets are used to all you to wire wrap to the socket instead of the chip, so that if the chip goes bad, you don't need to change your wiring, just the chip. In terms of the number of pins, don't worry about that. You will not b ...
TD62604PG,TD62604FG - Toshiba America Electronic Components
TD62604PG,TD62604FG - Toshiba America Electronic Components

Protection components
Protection components

... OV - VA ...
Dual Schottky Barrier Diode, 15 V, 1 A
Dual Schottky Barrier Diode, 15 V, 1 A

... customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures tha ...
Electric Power Engineering and Electrical Engineering
Electric Power Engineering and Electrical Engineering

... transients at active load, waveforms of voltages and currents. The circuit locking properties recovery time of thyristors. The requirement for a capacitive (advance) nature of output current of self-commutated inverter of current (advance angle ). Features of processes and waveforms of currents at ...
a high gain input-parallel output-series dc/dc converter
a high gain input-parallel output-series dc/dc converter

... reverse recovery problem are still major challenges for high step up and high power conversion with satisfactory efficiency. To solve aforementioned drawbacks, some three-state switching converters with high static gain employing diode–capacitor cells were presented. However, several diode–capacitor ...
ADD CURRENT LIMIT TO THE BUF634
ADD CURRENT LIMIT TO THE BUF634

ACADEMIC PHYSICS REVIEW: CIRCUITS
ACADEMIC PHYSICS REVIEW: CIRCUITS

... For each_gEouping, identify which would present more resistance: o ...
< 1 ... 331 332 333 334 335 336 337 338 339 ... 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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