Prepared by:
Debashish Mishra




BACKGROUND

The significance of power factor (PF) correction is reflected in the large number of documents addressing this subject, in the engineering design effort, and in the numerous industrial plants that manufacture equipment for the control of reactive power and filtering of current harmonics . Some of the benefits derived from correct PF adjustment are:
1. reduced energy loss;
2. released generation, transmission, distribution, and substation cap ....etc

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i need the discribtion and working or simulated circut diagram and pdf file ....etc

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Micro-electro Mechanical Systems

Micro-electromechanical systems (MEMS) is a technology that combines computers with tiny mechanical devices such as sensors, valves, gears, mirrors, and actuators embedded in semiconductor chips.

Overview
MEMS are already used as accelerometers in automobile air-bags. They've replaced a less reliable device at lower cost and show promise of being able to inflate a bag not only on the basis of sensed deceleration but also on the basis of the size of the person th ....etc

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I need 6 volts 750 MA smps power supply for audio application with full details of transformer winding details etc. Please help me ....etc

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Micro-electro Mechanical Systems (MEMS)

Introduction
The satellite industry could experience its biggest revolution since it joined the ranks of commerce, thanks to some of the smallest machines in existence. Researchers are performing experiments designed to convince the aerospace industry that microelectromechanical systems (MEMS) could open the door to low-cost, high-reliability, mass-produced satellites.MEMS combine conventional semiconductor electronics with beams, gears, levers, switches, accelerometers, diaphragms, microfluidic thrus ....etc

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ABSTRACT
Brake performance can be divided into two distinct classes:1) Base brake performance2) Controlled brake performance.A base brake event can be described as a normal or typical stop in which the driver maintains the vehicle in its intended direction at a controlled deceleration level that does not closely approach wheel lock. All other braking events where additional intervention may be necessary, such as wheel brake pressure control to prevent lock-up, application of a wheel brake to transfer torque across an open differential, or appl ....etc

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Micro electro-mechanical system ....etc

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Aim:
This project is to make high efficient digital three phase volt meter , with following specification using micro controller

Accuracy (+ or -) 0.25% F.S. (+ or -) 1 digit
Sampling Time Abt. 0.8 sec. typically
Aux. power source AC 110/220V (+ or -) 10%m 50/60Hz
Power Consumption Operating Temp. range 0-60 deg. C
Storage Temp. range -10 -70 deg. C
Temperature coefficient <100PPM/deg. C
Max. relative humidity 95%
Dielectric strength (IEC688)
AC 2KV/1Min
Input/power/output terminals
AC 3KV/1min
All t ....etc

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Definition
Micro-electromechanical systems (MEMS) is a technology that combines computers with tiny mechanical devices such as sensors, valves, gears, mirrors, and actuators embedded in semiconductor chips.




Overview
MEMS are already used as accelerometers in automobile air-bags. They've replaced a less reliable device at lower cost and show promise of being able to inflate a bag not only on the basis of sensed deceleration but also on the basis of the size of the person they are protecting. Basically, a MEMS device contains micro-cir ....etc

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7 segment led driver ic circuits diagrams 3 digi volt metre
....etc

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