Transistor as a Switch

When used as an AC signal amplifier, the transistors Base biasing voltage is applied in such a way that it always operates within its active region, that is the linear part of the output characteristics curves are used.
However, both the NPN & PNP type bipolar transistors can be made to operate as ON/OFF type solid state switch by biasing the transistors Base terminal differently to that for a signal amplifier.

Solid state switches are one of the main applications for the use of transistor to switch a DC output ....etc

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Electricity & Magnetism


Atoms

Have neutrons, protons, and electrons.

Protons are positively charged

Electrons are negatively charged

Electrons

Are located on the outer edges of atoms they can be moved.

A concentration of electrons in an atom creates a net negative charge.

Static Electricity

The build up of an electric charge on the surface of an object.

The charge builds up but does not flow.

Static electricity is potential energy. I ....etc

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ACKNOWLEDGEMENTS in the realization of this project successfully, many people have the best property on me their blessings and promised heart support, this time I'm using to thank all those who have been affected by project. Mostly I thank God to be able to carry out this project successfully. Then, I want to thank my Director Mr. SVBabu and physics professor Mr.Ramna Rao, the valuable tips were those who helped me to patch this project and make success evidence complements its suggestions and instructions served as a major contributor towards ....etc

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Abstract

Magnets have been known for centuries.
The Chinese and Greeks knew about the magical properties of magnets. The ancient Greeks used a stone substance called magnetite. They discovered that the stone always pointed in the same direction. Later, stones of magnetite called lodestones were used in navigation.

William Gilbert, an English physician, first proposed in 1600 that the earth itself is a magnet, and he predicted that the Earth would be found to have magnetic poles.



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physics investigatory project on logic gates for class 12 pdf download

Boolean functions may be practically implemented by using electronic gates. The following points are important to understand.

Electronic gates require a power supply.
Gate INPUTS are driven by voltages having two nominal values, e.g. 0V and 5V representing logic 0 and logic 1 respectively.
The OUTPUT of a gate provides two nominal values of voltage only, e.g. 0V and 5V representing logic 0 and logic 1 respectively. In general, there is only one output to a logic gate excep ....etc

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sent to me on [email protected] ....etc

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reverse magnetism technical seminar with ppt

The Earth has a magnetic field, as can be seen by using a magnetic compass. It is mainly generated in the very hot molten core of the planet and has probably existed throughout most of the Earth's lifetime. The magnetic field is largely that of a dipole, by which we mean that it has one North pole and one South pole. At these places, a compass needle will point straight down, or up, respectively. It is often described as being similar in nature to the field of a bar (e.g. fridge) magnet. However the ....etc

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i m looking for an investigatory progest on rectifier help me please with required data..:) ....etc

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