Whois & Analysis for iristech.co

Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal.

Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors.

In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being maximum power point tracking.

A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people).

When the input information is supplied has an electrical signal, the display is called an electronic display.

The iris (plural: irides or irises) is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.

Eye color is defined by that of the iris.

In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm that serves as the aperture stop.

Optical filters are devices that selectively transmit light of different wavelengths, usually implemented as plane glass or plastic devices in the optical path which are either dyed in the bulk or have interference coatings.

The optical properties of filters are completely described by their frequency response, which specifies how the magnitude and phase of each frequency component of an incoming signal is modified by the filter.

Dimmers are devices used to lower the brightness of a light.

By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output.

Although variable-voltage devices are used for various purposes, the term dimmer is generally reserved for those intended to control light output from resistive incandescent, halogen, and (more recently) compact fluorescent lights (CFLs) and light-emitting diodes (LEDs).

More specialized equipment is needed to dim fluorescent, mercury vapor, solid state and other arc lighting.