Step down transformers are designed to reduce electrical voltage. Their primary voltage is greater than their secondary voltage. This kind of transformer steps down the voltage applied to it. For instance, a step down transformer is needed to use a 110v product in a country with a 220v supply.

Step down transformers convert electrical voltage from one level or phase configuration usually down to a lower level. They can include features for electrical isolation, power distribution, and control and instrumentation applications. Step down tra ....etc

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Cyclo-converter

A cycloconverter or a cycloinverter converts an AC waveform, such as the mains supply, to another AC waveform of a lower frequency, synthesizing the output waveform from segments of the AC supply without an intermediate direct-current link.

Cycloconverter

Cycloconverter is frequency changer that converts AC power at one input frequency to AC output power at a different frequency.
Variable frequency output can be obtained by AC to DC to AC using phase-controlled converters (rectifier followed by inverter). This is two s ....etc

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To get information about satellite communication system refer the links below

http://seminarsprojects.net/Thread-satellite-communication-systems

http://seminarsprojects.net/Thread-satellite-communication-system--30532

http://seminarsprojects.net/Thread-satellite-communication-pdf-report

http://seminarsprojects.net/Thread-overview-of-satellite-communication-system-ppt ....etc

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to get information about the topic carparking project using up down counter full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-automatic-car-parking-system--19626

http://seminarsprojects.net/Thread-multistory-car-parking?pid=45332&mode=threaded ....etc

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Check Valves: Wafer, Wafer-Lug, and Double Flanged Type


General

SCOPE
This standard covers design, material, face-to-face dimensions,
pressure-temperature ratings, and examination, inspection,
and test requirements for gray iron, ductile iron, steel,
and alloy single and dual plate check valves. Valve configurations
include wafer, wafer-lug, and double flanged type with
facings that will permit installation between ASME and MSS
flanges that conform to the standards and specifications listed
....etc

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I need to have a PPT on wafer biscuits making.Tks
Philip Joshua ....etc

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nice project want to try it.good site for someone whose trying minis using microcontrollers ....etc

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hi
you can read a detailed report on water bumping, from the below thread.

http://seminarsprojects.net/Thread-wafer-bumping ....etc

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Wafer bumping services are offered as a preparatory step for flip-chip bonding or as bumping
service alone. The types of solder bumping available include high lead solder, eutectic solder and
lead free solder. Lead free bump, which is composed of tin-silver alloy, can meet the WEE
directives. Additionally, it can eliminate alpha particle sources.This service is currently offered for 6and 8wafers, and soon 12 wafers. About 11,000 bumps on a die with 120 m bump pitch with lead free solder, and a 100 m bump pitch.

Wafer-bump Deposition:
....etc

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i needed the ppt and full seminar report for this topic ....etc

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