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NCP1351LEDGEVB Universal Input, 20W, LED Ballast Evaluation Board User's Manual
NCP1351LEDGEVB Universal Input, 20W, LED Ballast Evaluation Board User's Manual

... transformer construction. We can now calculate the maximum duty cycle running in CCM: ...
SMVD - INTEC Controls
SMVD - INTEC Controls

... The SMVD is designed to drive large Staefa magnetic valves. It is available as a phase cut amplifier or with a universal analog input. The input section will accept a phase cut, mA, or DC voltage input signal. The mA and DC inputs are non-isolated, however, an isolated mA input is available. The fac ...
to U217B datasheet.
to U217B datasheet.

... This depends on the latching current of the triac and its load current. The firing pulse width is determined by the zero crossing identification which can be influenced with the help of sync. resistance, Rsync, (figure 6). ...
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Analysis Offshore of Wind

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... the series-active filter. The shunt-active filter performs dclink voltage regulation, thus leading to a significant reduction of capacity of the dc capacitor. ...
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The LW6-180 Amplifier

... equal to the screen-voltage rating) is generally lower than in a pentode connection (where you can use a lower supply for screen grids). The inherently low screen-voltage rating of horizontal-deflection tubes led to some disagreeable inconveniences, such as a lot of tube abuse from one side, and an ...
Electrical Machines-I (PCEE 4203) Lesson 13
Electrical Machines-I (PCEE 4203) Lesson 13

Fusion Datasheet.indd - Control Concepts, Inc.
Fusion Datasheet.indd - Control Concepts, Inc.

... UL Mark is less than 3/8 of an inch, the trademark symbol may be omitted if it is not legible to the naked eye. The font for all letter forms is Helvetica Condensed Black, except for the trademark symbol ®, which is Helvetica Condensed Medium. No other fonts are acceptable. 200-195C 20M/11/97 ...
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... device will protect up to five lines. They are available with operating voltages of 5V, 12V, 15V and 24V. They are unidirectional devices and may be used on lines where the signal polarities are above ground. TVS diodes are solid-state devices designed specifically for transient suppression. They fe ...
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Single Schottky Barrier Diode, 90 V, 200 mA

... 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 ...
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... 2. Spontaneous chemical reaction. 3. The two half-cells are set up in different containers, being connected through the salt bridge 4. No current passes due to the presence of a high resistance in the potentiometer, hence no change in conc. of analytes happen, so potentiometry is a nondestructive me ...
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... The electrical current is pushed by the _______, which has the same function as the pump and boiler. The strength of push provided by the battery is called its voltage. © Boardworks Ltd 2003 ...
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... a variable voltage of N  Vin. 500 mA Peak Current Capability The NCP1216A can drive a MOSFET directly without any additional driver stage. If the selected MOSFET gate charge would overload the DSS capability, then an auxiliary winding could be used solely to supply the driver pulses. ...
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Optically Isolated - Dionics-USA
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... MOSFET/IGBT’s when electrical isolation between input and output is required. It is particularly well suited for Medical implant applications. In addition to the infrared LED and photovoltaic (PV) diode array, each of the DIG-1185 devices contains circuitry that rapidly discharges the power MOSFET/I ...
PART II. THIN FILMS AND ION TECHNIQUES
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... resembles that of leaky rectifier. (Insert fig. From page 70) After the first cycle there is a difference in ion and electron current. Since no charge can be transferred through the capacitor the voltage on the electrode must self – bias it negatively until the net current (averaged over the cycle) ...
< 1 ... 298 299 300 301 302 303 304 305 306 ... 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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