Read topic., AC/DC current, resistance, phase and phase difference between two or more waveforms, relative frequency of a waveform, observe the amount of noise present on a signal, etc. Power is the total amount of water flowing in given time. In general terms, charge is water, voltage is the pressure of water, current is the flow of the water. Retrieved on )./DC voltage Water Analogy of Electricity The water analogy for electricity is useful in order to understand the concept of potential difference and for explaining voltage, current, and power. They are some parts of Libya, Indonesia, Vietnam, Malaysia, Madagascar, Papua (New Guinea) and Morocco (Standard Ref: World Plugs, retrieved 2012 Dec 19. Only there are two peculiar cases of 127V, 50Hz and 127V, 60Hz. Australia entirely uses 230V, 50Hz supply. However, almost entire part of Argentina uses 220V, 50Hz supply. The larger part of Northern America with Columbia, Venezuela and Ecuador use strictly 115V, 60Hz supply. However, this excludes some parts of Madagascar, Libya, Morocco and South East Asia, where the supply is 110V, 50Hz. Using CRO, we can very accurately measure, AC AC Voltage In larger regions of Asia, Africa and Europe 200V to 230V AC mains supply is used. If a laboratory has only CRO in it, other measuring instruments may not be required. The cathode ray oscilloscope is a versatile laboratory instrument. How function generator works? Understand its working with block diagram.How digital multimeter works? Explain with diagram.How to measure frequency & phase using Lissajou’s patterns on CRO? Explain with diagrams.How to measure AC/DC voltage & current using CRO? Explain with diagrams.How the circuit of CRO works? Explain working of each block with block diagram.How to use the front panel controls of Cathode Ray Oscilloscope?.What is fluorescence, Phosphorescence & Persistence in terms of CRT?.How deflection system in CRT work? Explain with diagram.What is Cathode Ray Tube (CRT)? Explain with diagram.What is propagation delay in electronic circuits?.The technology for these displays is much different than that for CRTs. Notebook computers typically use liquid crystal display. The most common specification for CRT displays is known as SVGA (Super Video Graphics Array). In computer systems, there are several display modes, or sets of specifications according to which the CRT operates. The CRT thus produces three overlapping images: one in red (R), one in green (G), and one in blue (B). These devices have three electron guns, one for the primary color red, one for the primary color green, and one for the primary color blue. However, virtually all CRTs today render color images. This is typical of a monochrome, or single-color, CRT. The illustration shows only one electron gun. But the scanning takes place at such a rapid rate that your eye sees a constant image over the entire screen. As viewed from the front of the CRT, the spot moves in a pattern similar to the way your eyes move when you read a single-column page of text. This causes the spot to race across the screen from right to left, and from top to bottom, in a sequence of horizontal lines called the raster. To produce an image on the screen, complex signals are applied to the deflecting coils, and also to the apparatus that controls the intensity of the electron beam. The electron beam produces a tiny, bright visible spot when it strikes the phosphor-coated screen. There are two sets of deflecting coils: horizontal and vertical.(In the illustration, only one set of coils is shown for simplicity.) The intensity of the beam can be varied. Deflecting coils produce an extremely low frequency electromagnetic field that allows for constant adjustment of the direction of the electron beam. The electron gun generates an arrow beam of electrons. The CRT in a computer display is similar to the "picture tube" in a television receiver.Ī cathode-ray tube consists of several basic components, as illustrated below. Most desktop computer displays make use of CRTs. A cathode-ray tube (CRT) is a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface.
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