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 ...

Backlit panels in aircraft cockpits and vehicle dashboards provide critical information for operators. Illuminated controls and instrumentation, gauges, characters, symbols, and shapes must be clearly ...

This large library of free industrial online webinars available from GlobalSpec's partners covers the big trends in engineering - everything from electrical engineering and power electronics to ...

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 ...

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 ...

Another dual controller configuration was developed for the situation in which it is undesirable to fail with outputs de-energized. This system is used in energize-to-trip protection systems. The ...

Worms and worm gears are gear sets that offer high gear reduction and torque multiplication with a small footprint. A worm drive is a cylindrical gear with a shallow spiral thread that engages the ...

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 camera for aerial photography has 6 in focal length. At a flying height 10,000 ft above mean sea level, what is the photo scale on the ground 2,000 ft above mean sea level? The scale of the ...