A semiconductor diode is a non-linear device whose most outstanding feature is the fact that, basically, current is only allowed to flow in one direction. The diode is built by joining together two ...

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Axial lead resistors consist of a winding of resistive wire on a cylindrical ceramic substrate. The current or voltage leads are made of metal wire (generally copper plated with a tin-lead alloy) ...

In this chapter, you will learn about solid-state lasers, in which light is emitted by atoms embedded in a crystal, glass, or other transparent solid. After first explaining the general operation of ...

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As their name suggests, globe valves are linear motion valves with rounded globular shaped bodies. Since their shape is similar to other valve bodies, positive identification must be made based on ...

Gate valves (also known as knife valves or slide valves) are linear motion valves in which a flat closure element slides into the flow stream to provide shut-off. They are one of the most common ...

Rotary switches move in a circle and can stop in several positions. They are used to control many different circuits with a single switch. These devices have some advantages over other switches since ...

A bolt is a type of threaded hardware fastener that is used to position two workpieces in specific relation to each other. Bolts come in several configurations for their application and specification ...

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Diaphragm valves get their name from a flexible disc which comes into contact with a seat at the top of the valve body to form a seal. A diaphragm is a flexible, pressure responsive element that ...