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Basic Electric Transformers
Basic Electric Transformers

... Desirably the class should have enough sets of components to provide an activity for all students working in groups of, say, four or five to a team. The students can decide for themselves whether they help assemble the transformer “core” or to help wind the two coils. (Note that all these components ...
TIP140T / TIP141T / TIP142T NPN Epitaxial Silicon Darlington Transistor T IP
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... Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support. Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor ...
equipotential planes, a figment
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... Physics. Having the same electric potential at every point.1 equipotential as used in the power industry: (conductor stringing equipment) (power line maintenance) An identical state of electrical potential for two or more items. (PE/T&D) 1048-1990, 516-1995, 524-1992, 524a-1993 equipotential plane a ...
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... parallel with each other as a net parasitic capacitance, interact with L to produce an oscillation • The output C is in series with the net parasitic capacitance, but C is so large that it can be ignored in the oscillation ...
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Switch Mode Battery Chargers for Utilities

350-mA, 6-MHz HIGH-EFFICIENCY STEP
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... TOPSwitch™-FX uses the proven TOPSwitch topology and cost effectively integrates many new functions that reduce system cost and, at the same time, improve design flexibility, performance and energy efficiency. Like TOPSwitch, the high-voltage power MOSFET, PWM control, fault protection and other con ...
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... The easiest way to control the defibrillation is to control the time. This is done by simply charging the capacitor to the desired voltage and then discharging it directly through the patient creating an RC-circuit with its characteristic discharging behavior. One problem with this method is that th ...
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... power circuit and machine internal circuits are also live when power is on. In semiautomatic or automatic wire welding, the wire, wire reel, drive roll housing, and all metal parts touching the welding wire are electrically live. Incorrectly installed or improperly grounded equipment is a hazard.  ...
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GE 0106 Basic Engineering II
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... south is called a MAGNET. Magnet attracts iron fillings. It is also called as permanent magnet. A current passing though a conductor (or a coil) also can produce magnetic effect and it is called as Electromagnet. A permanent magnet has one north pole and one south pole. The imaginary lines which tra ...
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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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