A rotary encoder, also called a shaft encoder, is an electro-mechanical device that converts the angular position or motion of a shaft or axle to an analog or digital code. There are two main types: absolute and incremental (relative). Absolute rotary encoders provide a distinctly coded numerical value for each shaft position. In positioning tasks […]

A time switch is a device that has a built-in mechanical or electronic timer that turns an electrical circuit on and off at certain times of the day. The electrical current typically is used to perform a task that otherwise would be done by a person. Time Switch work in a variety of areas, such as irrigation or other water pumps, indoor or outdoor […]

InGaAs image sensors are image sensors that contain a CMOS IC readout circuit for easy signal processing. They operate in charge integration mode that accumulates the generated charge to increase the output signal making them ideal for low-level light detection. Applications include photometry in the near-infrared region up to 2.6 μm, such as in […]

Sealed Lead Acid (SLA) Battery, also called Valve Regulated Lead Acid (VRLA) Batteries, are a lead acid battery that has the sulfuric acid electrolyte coagulated (thickened) so it cannot spill out. They are partially sealed, but have vents in case gases are accidentally released for example by overcharging. Sealed lead acid batteries are one of […]

A walkie-talkie (more formally known as a handheld transceiver, or HT) is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald L. Hings, radio engineer Alfred J. Gross, and engineering teams at Motorola. Similar designs were created for other armed forces, and after the […]

Strain gages are devices whose resistance changes under the application of force or strain. They can be used for measurement of force, strain, stress, pressure, displacement, acceleration etc. Strain gages are of the stucture, in which a metallic foil film in the thickness of a few microns is glued on a thin electrically insulated sheet (such as […]

An intercom (intercommunication device), talkback or doorphone is a stand-alone voice communications system for use within a building or small collection of buildings, functioning independently of the public telephone network (Azori 2016). Intercoms are generally mounted permanently in buildings and vehicles. Intercoms can incorporate connections […]

An interactive whiteboard is an instructional tool that allows computer images to be displayed onto a board using a digital projector. The instructor can then manipulate the elements on the board by using his finger as a mouse, directly on the screen. Items can be dragged, clicked and copied and the lecturer can handwrite notes, which can be […]

The Quantum Dots Display is a new type of display used in flat panel displays as an electronic visual display. With many promising advantages, Quantum Dots Display is considered as a next generation display. As for the global quantum dots display industry, the industry structure is relatively concentrated. The most of market share in revenue is […]

Light control is the ability to regulate the level and quality of light in a given space for specific tasks or situations. Controlling light properly not only enhances the experience, it helps to save energy by using light when and where it is needed most. LED lighting controllers communicate between several system outputs and inputs related to […]