Electronics Engineering

there are wristbands available that ground you, so any static electricity you generate is transferred away from you. Also, touching anything metal will discharge the electricity just like the wristband, however, and more you generate will be transferred to the computer component you are working with (which is where i believe you were going with this question)

To transmit a lot of electrical power, you either need a high voltage or a high current. But a higher current means your cables got hotter and you lose a lot of energy so is better to use higher voltage. To increase the voltage, we need to use a step up transformers.

Step up transformers are transformers which has ability to increase the voltage and they have more turns on the secondary coil on the primary coil.

A limit switch turns on or off when the object being sensed reaches a specific location.

A proximity sensor returns an analog signal indicating how far the object is from the sensor.

I=0.4 A

T=3hrs=10800 seconDs

i=q/t

q=It

q=0.4*10800

q=4320Coulomb

Georg Simon Ohm

German mathematician and physicist, began his important publications in 1825.

In his first paper published in 1825, Ohm examines the decrease in the electromagnetic force produced by a wire as the length of the wire increased. The paper deduced mathematical relationships based purely on the experimental evidence that Ohm had tabulated.

In two important papers in 1826, Ohm gave a mathematical description of conduction in circuits modelled on Fourier's study of heat conduction. These papers continue Ohm's deduction of results from experimental evidence and, particularly in the second, he was able to propose laws which went a long way to explaining results of others working on galvanic electricity. The second paper certainly is the first step in a comprehensive theory which Ohm was able to give in his famous book published in the following year.

The net charge on n-type and p-type meterials is zero because the r formed by the combination of diferent chemists...

Yes , all conductors have some

amount of resistance although it

varies depending on the material

that is conducting the electricity .

Copper has a very low resistance,

and aluminum has a slightly

higher ( but still quite low )

resistance . This is why they are

used as electrical conductors.

Conductor resistance results in

voltage drop over the conductor

and power loss, manifested as

heating of the conductor .

Therefore , you want as low a

conductor loss as is reasonably

practical .

The reason of resistance is that,

no electron has a linear motion

when an electric field is applied to

it . e- move in random due to

apparent collision with other e -' s.

This motion is termed to as

Brownian motion . The random

movement however interrupts

with the electric field and creates

resistance sue to a negetive field

generated .

The number of electrons coming out of the positive end of the loop must be the same as

the number of electrons going into the negative end. If it isn't, then electrons had to be

created, or destroyed, or were injected, or leaked out, somewhere along the series loop.

As Professor Jones PhD of the Royal University of Malta's Department of Engineering and Science we have been conducting studies into the long term effects of licking a battery terminal to test for power as some people call it! Our Studies have proven that you are 87% more likely to die from a spontaneous static shock later in life. Other studies have shown that you are more likely to die from licking from a battery than being run over by a Double Decker bus in London. During our study we took a case study in the USA and 87 out of every 100 samples had signs of significant battery and electronic related defects. I URGE you as a professional NOT TO LICK BATTERIES or you will suffer consequences as we found out with the 85 out of the 100 sampled that spontaneously fell to the ground......this is SHOCKING isn't it!! J Jones Head of Direct Voltage Flow Studies, University of Malta

—Analog digital hybrid modulation seeks the ways to eliminate the incoherent quantization noise component in digital communication, instead of conveniently making it minimal.

A Programable Logic Controller is simply a small computer used to control some system such as garden watering systems. They are everywhere. The computer in microwave ovens, television sets, fridges etc are all PLCs. Generally the term is used to describe a computer that doesn't normally interact with a human but just controls something like those things listed above. There are many many more PLCs around the place than computers that humans comminicate with.

Its simple exclusive or gate b/e x, y (any thing a,b etc..) combined with another exclusive or gate of z. i was trying to past a pic...but this sheet does not allow.....

x----`````

! ! `----

y----```` -

----- `````

----- !! `------------

z--------------- `````

suppose if we apply 010 to xyz, then XOR of xy (01) is 1 then XOR of previsou 1 (xy) and z is again 1 which is output,....so to make even 1's we 'll add 1....

another example lets take input 101...then XOR of xy (10) is 1 and XOR with z (1 with Z) that is 1 and 1 is zero which means that input 1's are already even so no additional 1 is needed.

A series DC motor can be thought of as having two components, the rotor and the stator. The rotor has windings which rotate and the stator's windings stay stationary. In a series DC motor these windings are connected in series. To make the motor turn backwards you must reverse the current through either the rotor or stator windings, but not both.

farad is the unit for capacitance in SI system. If one volt is developed as one coulomb charge is placed then capacitance has to be one farad.

But one farad is enormous large one so practically speaking we use only micro farad, nano farad and pico farad. They are respectively 10-6 F, 10-9 F and 10-12 F

A differential amplifier will amplify the difference between 2 signals. This is useful in control systems, where one signal can represent what is actually happening (could be a position or speed, for example). The other signal can represent what is desired.

A differential amplifier could be used in a cruise control on a car. When you set the cruise control, a voltage level can represent the speed that the car was traveling when set. If the car starts going up a hill and slows down, the voltage difference would be amplified, and the output of the differential amplifier can be sent to an actuator, which moves a lever to increase the rate of fuel going to the engine. When you get back to the desired speed, the difference is zero, and the actuator stops moving. If your speed increases too much, then it would have a negative voltage, so the actuator would move the other way, decreasing the rate of fuel to the engine.

A: Actually it is only one transistor required for amplification the other junction can be a diode. As current Begin to flow it causes a bias across one junction which is opposite biasing for the other, A good differential amplifier will have those junction virtually at the same point with a very good current source because any mismatched will cause and output without any input. It is called voltage offset on the other end if the feedback current is very small it will also produce an output voltage offset known as current offset or basically errors

Main memory is the storage that is directly available to the CPU of a computer and is made3 up of RAM and ROM. RAM's (Random Access Memory) purpose is to hold the data and instructions temporarily which the CPU will process. ROM's (Read Only Memory) function is to hold data necessary for starting up the computer permanently , whose contents cannot be changed by the user.

The a.c. component, or ripple, produced by the 4-diode (full wave) bridge rectifier is the same as that produced by the 2-diode full wave rectifier.

The bridge is connected across the secondary winding of a transformer.

The 2 diodes of the other type of full wave rectifier are each connected to one end of a winding, but that winding requires a center tap.

For any desired value of d.c. after rectification, the a.c. voltage of the 2-diode rectifier winding has to be twice that of the winding required for the bridge.

conductors are made up in such a way that the electricity can pass through them easily.

The materials of the conductors may be copper, gold, aluminium, gold, silver, water etc..,

Since the base in an n-p-n transistor is kept very thin, very few electrons get to recombine with holes and escape out of base, most of the electrons are injected from emitter into the collector. As a result, Base-current is very small. Whereas the Collector-current is almost equal to the Emitter-current.

One of the advantages is thereâ??s minimal loss of analog data and can easily be converted to digital data. The disadvantage is it is sensitive to temperatures and acceleration.

You can reduce the voltage fluctuations by first determining what is causing them, then counteracting this cause. In small circuit designs with multiple switching amplifier and ICs, the power or ground lines may become noisy due to this switching. Placing capacitors at the ICs power and ground can reduce this to manageable levels in most cases. Sometimes it can become necessary to isolate specific circuit's power and ground from the system using small inductors as well. If you are designing a power supply, zener diodes, and isolated power outputs (at the same or different voltages) can be used.

* Digital signals suffer less interferences than analogue signals. This means that when you listen to a digital signal you won't hear a hissing sound, as within digital signals regenerator circuits are used to clean "noisy" pulses. * Digital signals can be made very short so more pulses can be carried around each second, which means more information can be passed on.