Electronics Engineering

bolígrafo

At the moment ASIMO is a Multi-million dollar robot, however so was a flat screen TV so I would give it by 2020

Image Transfer

All Electrostatic Copiers work under the premis that a charge of electricity is placed on an Image Drum which has the ability to retain the electric charge much like a capacitor holds it's charge but with the ability to hold or release the charge depending on how much light and darkness is applied to the Image Drum. on analog copiers the light and darkness is reflected from the mirrors on the scan area and brought down to the drum surface creating the image that was reflected from the paper that is being scanned. On digital copiers the Image is processed (much like a desktop scanner) by processing the reflected image and converting the image into dots(DPI) then a laser will shoot a light laser image corresponding to the paper that is being scanned onto the Image drum. Image Creation Now that the Image Drum has been hit with light either from the laser or the reflecting light, it will have various charges on its surface (exacting the Image of the scanned original paper) this is called an elecrtostatic latent Image (ESLI) The Image Drum with the ESLI will now be turned till it reaches the developing unit (where toner and developer are mixed to charge the toner (yes toner has the ability to magnetize after mixed with the developer powder) Now, where the drum meets the developer roller is the magical part. Now that the toner is charged with magnetism it will adhire to the Image drum (where the dark electrostatic parts from the Paper Image came down on the Drum) making all the dark parts pull in the toner to the drum and all the light parts do not allow toner to contact the Image Drum, now this Image drum has an image with toner on it (wanna test this ? Stop a copy in the middle of copying, open the copier and pull out the drum, you will see toner on the drum with parts of the image from the original paper ) After the Image on the drum is full of toner It will be turned where the Transfer part is executed Image transfer
Ever put metal fragments on a paper then put a magnet below the paper ? the fragments are attracted to the magnet. This is how the transfer process is done. the drum is turning with the image of toner on it the a paper is positioned below the drum and sinchronized at the same speed with the Image drum, at the point where the paper and the drum meet a high voltage is applied in order to attract the toner off the Image drum and on to the paper, now the paper is full of toner looking like the Image original paper that was scanned. Final sequence now that the Toner is on the paper (looking just like the original) two rollers with heat at about 200 Digrees F press the toner on to the paper making it permanently fused on the paper.

Background: PRI = Pulse Rate Interval. PRI is a term used in Radio Frequency (RF) systems. Specifically, Pulse mode RF systems, as apposed to continuous wave (CW) systems. Each pulse has an on period, pulse width (PW), and an off period. PRI is the time from the start of one pulse to the start of the next pulse. For example, if a pulse on time is 10 microseconds (uSec) and the off time is 90 uSec then the PRI is 100 uSec. Answer: A staggered PRI does not have a constant on and off time. The off time varies.

I think you are asking why is it necessary for an automobile battery to have low internal resistance. That is because the internal resistance of a battery limits the amount of current it will produce. Imagine connecting a wire from the plus side of the batter to the minus side. Then, the amount of current the battery produces is the voltage of the battery divided by its internal resistance.

So, if you take a flashlight battery and connect a wire between the two terminals, it might get a little warm. If you take a car battery cannot a wire between the two terminals, the wire will probably melt! (Don't try this!) If you take a lithium ion battery from your computer and short the two terminals, the battery will catch on fire. (Computer companies build extra resistance into the batteries to help to prevent that.

So, why do cars need low internal resistance batteries? They need lots of current to start those large gasoline engines turning. You car battery does a tremendous amount of work to start your engine (and remember, energy and work are the same in physics).

There are a number of different benefits that can be had by having an electronic career. You can for example learn more about technology.

photo diode donot work for long distance

photo diode act as a receiver

Wavelength = (speed of light) divided by (frequency) Wavelength = (300,000,000 meters/second) divided by (frequency) If the frequency is 1 MHz, then wavelength = (300,000,000 / 1,000,000) = 300 meters = 984 feet A smart engineer calculated the magic number 984 so that you could do all your arithmetic in megahertz and feet, instead of hertz and meters.

A piezo is just a manual, mechanical type of module. In order to work as an ignition the piezo module will need to be wired to an electrode which will spark when the piezo module is pressed or cranked. An ignition system is an assembly of parts and the piezo is like a spark generator for an ignition that does not use batteries or electricity. Pressing or turning the piezo module will send electricity to the electrode which should be mounted where gas emits from the burner so the electrode sparking will ignite gas as the gas leaves the burner.

You cannot use an ordinary multimeter to assess the difference between a normal power transformer winding and a shorted power transformer winding. You need a Q meter and/or to power it up at a reduced voltage with limited current to see what happens. Note that a shorted power transformer is capable of exploding, so you need to take appropriate safety precautions.

class b amplifiers as for class b amplifier the 'Q' point is near to cut of region.

A step-up transformer needs more turns on the secondary windings than on the primary windings to increase the voltage.

The relay's coil burns open. This is not necessarily the answer. Remember normally when a DC current is used a specific magnetism with a prominent North and South is created by the current carrying coil. If we are to use this magnetism together with another permanent magnet's interaction. a deflecting force results. This deflection can be controlled by a restraining spring and the angle of deflection is often a measure of the current. Now in place of the DC current an AC current is made to pass. The deflection is not shown by the meter as ac will create poles as per its frequency and direction of current flow. Also based on the magnitude of its current is the magnitude of the strength of the coils magnet magnet. Assuming same voltage in both cases the coil need not burn out. The deflection is absent here as polarity keeps reversing several times each second and the average value of the 2 forces cancel each other. In DC this deflection is prominent as the poles remain fixed. In relays there is no permanent magnet. However the AC current fed to relay coil will have a higher impedance in comparison to a DC current. This is because of a phenomenon called self inductance. The self inductance will create a back emf that will restrict the current in the coil. Hence the magnetising of the relay core will not be strong. Hence the relay may not operate at all. In Dc this back EMF is momentary and gradually the current increases to a maximum and stays steady. Hence a DC relay if fed by an AC voltage of same magnitude may not be able to pick up and do the necessary activation.

Semi-conducting materials changes in inter-atomic spacing resulting from strain affect the band gaps, making it easier for electrons to be raised into the conduction band while in metals, resistance change is mostly due to the change of geometry resulting from applied mechanical stress.

There is no fixed number of DC voltages that computers use. Computers have used as few as one DC voltage to many of dozens of different DC voltages, depending on the design of the logic circuit electronics they use.

From the middle 1960s (with the introduction of TI's 7400 TTL integrated circuits) through the present +5 VDC became a nearly universal voltage in computers. From the early 1970s (with the introduction of NMOS microprocessors, e.g. the Intel 8080) the +12 VDC and -12 VDC became common in microcomputers. In the 1990s (with the introduction of low power energy efficient microprocessors) +3.2 VDC (and other even lower voltages) became common in microcomputers (sometimes completely replacing +5 VDC) as it both reduces power consumption and permits higher speed of operation.

An amp meter connected in series with the load will show whether or not a current is flowing in a circuit.

The purpose of biasing an amplifier is to shift its operating point, so that when you apply a signal in you will get a expected signal out. The operating point is generally in the middle of the linear region. You would not use AC for the bias, as that would cause the operating point to constantly shift, and you would then not be able to differentiate between the signal and the bias.

See if your library has a Howard W. Sams Photofacts folder for that unit to determine the correct part.

In 8086 microprocessor the total memory addressing capability is 1 mega bytes. For representing 1 mb there are minimum 4 hex digits are required i.e, 20 bits. but 8086 has fourteen 16-bit registers. That is there are no registers for representing 20 bit address. So,the total memory is divided into 16 logical segments and each segment capacity is 64 kb(kilo bytes). That is 16*64kb=1 mb.So,for representing 64 kb only 16 bit register is sufficient. In 8086 microprocessor the total memory addressing capability is 1 mega bytes. For representing 1 mb there are minimum 4 hex digits are required i.e, 20 bits. but 8086 has fourteen 16-bit registers. That is there are no registers for representing 20 bit address. So,the total memory is divided into 16 logical segments and each segment size is 64 kb(kilo bytes). That is 16*64kb=1 mb.So,for representing 64 kb only 16 bit register is sufficient.

Uplink and downlink are frequencies

Communication from earth station to satellite in uplink and communication from satellite to earth station is downlink

Always uplink freq.>downlink freq.

2nd squadron has presidential unit citation with 3 oak leaf clusters, 1 valorous unit and 1 superior unit award

The process of conversion of AC into DC is known as rectification device used for this purpose is called as rectifier.A PN diode conducts well when it is forward biased and does not conduct Negligible current when it is reverse biased.This unidirectional nature of diode is used for the purpose of rectification.

This statement is correct

Quartz.