Electronics Engineering

8volts for all electronic devices

The selectivity or sharpness of series resonant circuit is measured by quality factor or Q factor.It is defined as the ratio of the voltage across the coil or capcitor to the applied voltage.In other words it refers to the sharpness of tuning at resonance.

Q = voltage across L or C ( in volts) / applied voltage ( in volts )

Q = 1/ R * ( L/C)^ 0.5

Q is just a mere number having values between 10 to 100 for normal frequencies.So it has no unit. Circuit with high Q values would respond to a very narrow frequency range and vice versa.Thus a circuit with high Q value is sharply tuned while a circuit with low Q value has a flat resonance.Q factor can be increased by having a coil of large inductance but of small ohmic resistance.

Amplitude shift keying changes the height/power of the transmitted signal without altering the frequency. Frequency shift keying changes the frequency of the transmission without altering the height/power of the transmitted signal.

Morse code is an example of amplitude keying where the amplitude is 0 or 100%.

RTTY teleprinter uses FSK with two frequencies and the codes that represent text characters are sent with patterns of the two frequencies.

sine wave symbol

Which building holds more people, the Empire State Building or a skyscraper?

The ATmega8535 is a kind of 8-bit Atmel AVR microcontroller.

People building Arduino boards prefer the Atmega168, which is very similar to the ATmega8535 but has more RAM and program space (but, alas, fewer I/O pins).

If you really want to see controversy, try asking: which is better, AVR or PIC?

The individual electrons will move back and forth, as they do when there is no current. You would have to do very careful statistics to notice that there are slightly more electrons moving in one direction than in the other: the drift velocity (average velocity due to current) of the electrons is typically a fraction of a millimeter per second.

UDT Sensors, Inc.

A capacitor and a resistor has no effect on the supply voltage; however, this particular load combination will cause the load current to lead the supply voltage by some angle termed the 'phase angle'.

Mobile phone is a long-range, portable electronic device used for mobile communication. Mobile phones are now inexpensive, easy to use, comfortable and equipped with almost every latest feature we desire.

Mobile phones are also known as lifesavers as they can help people in emergencies. If you get stuck in the middle of the road and find no one for help, you can just use a mobile phone and call for help. Mobile phones are comfortable way of communication over a long distance. Along with the obvious convenience and quick access to help in emergencies big and small, mobile phones can be both economical and essential for travelers trying to stay connected.

In Japan, mobile phone companies provide immediate notification of earthquakes and other natural disasters to their customers free of charge. In the event of an emergency, disaster response crews can locate trapped or injured people using the signals from their mobile phones or the small detonator of flare in the battery of every cell phone; an interactive menu accessible through the phone's Internet browser notifies the company if the user is safe or in distress.

We have also been downloading Java games and video clips to our mobile phones. Several online mobile phone shops have come up to cater to this increasing demand for the best mobile phone handsets and the most reliable and cost-effective services in the use of the same.

Along with all these advantages there are many disadvantages for mobile phone usage.

Mobile-phone use while driving is common. It is generally agreed that using a hand-held mobile phone while driving is a distraction that brings risk of road traffic accidents. So we need to use hands free sets to avoid such hazards.

The potential impact of the kind of electromagnetic fields generated by cellular phones on the human brain has received little attention until relatively recently, and it's probabMobile phone is a long-range, portable electronic device used for mobile communication. Mobile phones are now inexpensive, easy to use, comfortable and equipped with almost every latest feature we desire.

No it isn't. Neither is the High School Musical Sing It mic

The answer is: They are not. Whosoever told you that is off his meds. Alternatively, in some special applications there may be a reason for it. Many DC systems use a common ground where the loads are encased in the ground (like starter motors). Thus all breakers are positive, but some don't. If the loads don't care about polarity and the positive and ground are not common (like with a metal chassis), positive and negative is irrelevant.

The 6013 Rod can be used on either ac or dc arc welders, at around 90-120 amps depending on your settings

Tucson Direct

modem

Wafers are formed of highly pure defect-free single crystalline material. Donor impurity atoms, can be added to the molten intrinsic material changing it into n-type or p-type extrinsic semiconductor.

Almost every ICs contain millions of transistors it would make for a very long list!

THE TERM CONTINUOUS SIGNAL AND DISCRETE SIGNAL CLASSIFY THE SIGNALS

ALONG THE TIME (i.e. horizontal axis) where as THE TERM ANALOG AND DIGITAL

SIGNAL CLASSIFY THE SIGNAL ALONG THE AMPLITUDE (i.e vertical axis)

we often confuse our-self with continuous time and analog signals.

An analog signal is a signal which can take any amplitude in continuous

range that is signal amplitude can take infinite values on the other hand

a digital signal is one whose amplitude can take only finite numbers of values

Recommended Standard 232

Nick Holonyak Jr. had one of those bright ideas that lit up the world. In 1962, he invented the first practical red light-emitting diode (LED).

I graduated from TTU's electrical engineering Bachelor's program in Summer '07, and I am now finishing my Master's degree at a German university. I can say without a doubt that the education I received from Texas Tech was excellent and world class. Also, for students who plan to continue on to post-graduate studies, the electrical engineering program at TTU offers several Master's programs which have private industry affiliates. If you should qualify for one of these Master's programs, you could receive a fairly decent income while at the same time securing yourself a position at a large technical firm.

I Rather not think that you can buy 2 farad capacitor and no the terminals must follow polarity guidelines.

Resistances in series act just as if they were one single resistor. The value of the single resistor is the sum of the individual resistors connected in series ... Ra + Rb + Rc etc. When several resistors are in series, the effective total is greater than the biggest one. Resistance in parallel act just as if they were one single resistor. The reciprocal of the value of the single resistor is the sum of the reciprocals of the individual resistors connected in parallel ... Total effective resistance = 1 divided by (1/Ra + 1/Rb + 1/Rc + etc.) When several resistors are in parallel, the effective total is less than the smallest one. Once you figure out the effective value of the series- or parallel-combination of many resistors, you handle them as if they were one single resistor, and you can work with the voltage and current: Current through any resistance = (Voltage across it) divided by (its resistance).

i think computer structure is just a drawing of computer in a postal or book while computer function is just like the purpose of a computer.

An improper expression: 2 is an exponent.

P = VI

V = IR

P = (IR)I

P = I^2R

University of Dublin, Trinity College Dublin homepage is tcd.ie but you study general engineering for the first two years and then specialise for th last two.
else if you're thinking of University College Dublin try ucd.ie where you can pick which stream you want to study before you enter

That is used as a switching device. They are very common in Inverter circuits and can switch up to 1000's of amps.