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Electronics Engineering
Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.
24,372 Questions
What are major strengths and weakness of a teacher?
The strengths and weaknesses of teachers depend on the teacher. Some strengths of a teacher may be a good speaker, engaging, as well as patient. Some weaknesses of a teacher may be under-qualified, critical, and undedicated.
Higher immunity to noise, storage of digital signal is cheap and easy, its representation is only using two levels as opposed to infinite levels for analog
A look up table, is what it say, a list of data that is used in programing of micro controllers, it is a table that the program use to look up data that it need to do the job, it is a list of data and each data item is associated with a index, in other words where in the table it is, look at the examples at this link.
http://patenttrade.net/phpBB2/viewtopic.php?p=21#21
The human voice is a very mysterious entity because it cannot be directly seen as it is used. Unlike other musical instruments where the teacher can actually see what the student is doing, vocal training requires a teacher with an excellent ear that can identify the sounds a student produces with actual vocal function. I call this teaching ability, "x-ray ears"! For the student it is impossible to "hear" your own voice as others do. Therefore, it is helpful for the student of voice, whether they be a speaker or a singer to increase their understanding of exactly how this mysterious entity known as their "voice" actually works. Teaching voice should ideally be teaching the student to know his/her own voice well, what the options are and how to use them for a free and healthy sound.
Vocal production can seem like a complicated phenomenon, and therefore, I would like to break the voice down into the simplest components as possible. I will discuss what the voice is physically made up of, what variables it uses, and how the singer or speaker can use these variables and physical components in order to have vocal ease, strength and a pleasant vocal quality.
What is the human voice made of? Very simply- the muscles of the larynx, air, space and the articulators (tongue, teeth, palate, lips). That's it! These components interact with each other to produce your unique vocal sound. But you need to keep in mind that a vocalist uses the entire body to sing. This is why body alignment work is so important. Voice lessons, if taught by a competent teacher, should address each of these components through various exercises and concepts. It is also equally important to know which muscles and functions potentially interfere with the voice.
The muscle/mucous part of the voice is the vocal folds (aka vocal cords), which are a tiny paired muscle found in the larynx or voice box in your throat. The vocal cords are covered with a very important layer of mucous which basically has the consistency of jello. Other tiny muscles within the larynx control the space between the cords as well as the length of the cords. The vocal cords need to be brought together in order to produce sound. If they are too tightly brought together or not taut enough the vocal quality suffers. The larynx must be free to vibrate without excessive tensions from the throat constrictor muscles. Once they are brought together airflow makes them vibrate very quickly through the mucous layer that sits on them. If you are not getting enough water or are consuming products that dehydrate yourself, the vocal cords do not function freely. A symptom of this is a frequent need to clear your throat. I suggest 8 glasses of pure water or decaffeinated herbal tea per day. You should limit alcohol and caffeine consumption.
The voice is also made up of air. The air is the voice's energy source that you control with each breath that you take while singing or speaking. The air sets the vocal cords vibrating and oscillating through the mucous covering. Singing/speaking without a healthy air supply is like trying to drive a car without gas! Your breath is your fuel and it is vitally important. Vocalizing requires a sustained breath. When we inhale high in the body and raise our sternum/shoulder area for the breath, the exhalation cannot be sustained or controlled easily and actually tires the tiny throat muscles used for singing/speaking, producing vocal fatigue, tension and often, an airy sound.
On the other hand, learning how to take a breath which expands the ribcage and pelvic floor gives the vocalist ease and control over the voice once this technique is learned. A vocalist doesn't need more air, just more control over the air supply. One important fact that is almost always over-looked by voice teachers is how to prepare the body before taking a breath. It is almost impossible to take a healthy ribcage breath if your stomach muscles (the abdominals) are tense. The first step to proper breathing for voice, then, is to relax the abdominal area.
The voice is also most importantly made up of space.
Space? Let me explain. When you play any other musical instrument (and yes, even good speaking can be musical), that instrument is already built. You just simply learn to play it. The human voice is unique in that it is an instrument that is built as it is "played". The shape or space of this instrument is created by the size of your throat and mouth, other wise known as your "vocal tract". This is determined by how you take your breath, and the ability to relax those muscles that close the throat, many of which control swallowing and movements of the tongue. The shape of the voice is what makes it so mysterious, as it cannot be seen, only heard. When your throat is made smaller by the constrctor muscles, your larynx is elevated and the voice feels tight and strained. The sound produced is far from your best. If you employ the back of your tongue to push your larynx down in order to sing or speak, your voice will most likely sound and feel good to you. Unfortunately, no one but you will hear this pleasant sound. Your voice will not resonate to others as your primary resonator, your throat, will be filled up with your tongue! The goal of the vocalist then is to open the throat (as in a yawn) while relaxing the tongue. There are no muscles in the throat that help us to sing or speak with a resonant sound. Only the tiny muscles located in the larynx produce vibration and pitch which can be resonated by an open and totally relaxed throat.
What are the variables that a voice can work with? Pitch, head and chest registers, volume control, sounds (vowels and consonants), and vocal quality, depending on the style of music you are singing. Voice lessons will help you to become aware of these qualities and how to balance and manipulate them within your voice. Different vocal qualities and music usually bring up a wide gamut of strong emotions in the vocalist. It is important to recognize this- the voice is meant to be a communicative device closely connected to our spiritual selves. The more options the speaker or singer has available within their voice, the more they are able to express the gamut of human emotions. By expanding your voice, you expand yourself and the range of emotions you are able to express. This is the true goal of voice lessons.
One thing to remember is that learning to improve your voice is a gradual process. You are teaching your muscles new ways of responding. The process will become automatic, but it takes daily practice and often several years of study, depending on the student. Typically, at first you will be able to produce healthy changes during voice lessons. Gradually these improvements will carry-over into practice at home. The next step is getting so used to the new way of using your vocal and breathing muscles (while relaxing the constrictors) that this will become second nature to you during performances or in public speaking. Practice, dedication and good communication with a trusted voice teacher are the ingredients for success. You will get out of voice training exactly what you put into it. It's a wonderful journey of self-growth, exploration and exciting possibilities.
As power is defined as the rate of energy transfer, 'power dissipation' is a measure of the rate at which energy is dissipated, or lost, from an electrical system. When an electric current does work on a conductor, the internal energy of that conductor increases, causing its temperature to rise above the ambient (surrounding) temperature. This causes energy to dissipate away from the conductor into the surroundings, through the process of heat transfer. The rate of this heat transfer (joules per second) is termed 'power dissipation' (in watts).
This is power that is converted to heat and then conducted or radiated away from the device. Electronic and electric devices can have a limit on the current they can safely handle that is not an electronic limit, but a physical one. For instance, a transistor may otherwise be able to handle a certain amount of current, but it is given a lower current rating because the die gets too hot.
Dissipation is usually measured in watts, and uses the usual Ohm's law calculations for power:
P = I^2 * R
or
P = E * I
Electrical wiring in your house dissipates power, so does the speaker in your stereo, as well as motors, integrated circuits, anything that carries electrical current and has some inherent resistance (which is everything pretty much, except maybe superconductors!).
Power dissipation is usually an unwanted effect, unless you are trying to build an electric heater!
It is wasted power to keep the device quiescent and operational.
Are the pyramids of Egypt 3 sided or 4?
IF you count the base five, if not 4. I would know because i made a cardboard one and then i found out it was 4 so i had to startover. It sucked.And i thought it was three!
Radar jamming and deception is the intentional emission of radio frequency signals to interfere with the operation of a radar by saturating its receiver with noise or false information. Mechanical and electronic jamming are the two different types.
In a chopper type amplifier the dc i/p voltage is converted into an ac voltage, amplified by an ac amplifier and then converted back into a dc voltage proportional to the original i/p signal
Zero out impedance and infinite internal resistance.
- Divya Naveenan
In 89S51 what s means 89c51 what c means?
c in 89c51 stands for cmos..
s in 89s51 stands for system programming
system programming is way of burning your program into microcontroller chip...
just like we write a program in c language and then burn it into microcontroller.this in system programming is another way of burning your program into microcontroller....
What is a Neutroni Transmitter and how does it work?
The Possibility exists this is a science-fiction device akin to the Sub-Space radio used on The televisin program Star Trek. The device (Neutroni ) was something akin to a long range but somewhat clandestine (SSB?) radiophone system. the device was(More than Plausible)
Why is the parallel resonant circuit called an rejector circuit?
THE PARALLEL rlc CIRCUIT IS CALLED A REJECTOR CIRCUIT BECAUSE IT REJECTS DOWN THE CURRENT. THE REASON IS AT RESONANCE THE IMPEDENCE OF THE CAPACITOR BECOMES EQUAL TO THAT OF THE INDUCTOR SO NO CURRENT FLOWS. AT LOW FREQUENCY THE CAPACITIVE REACTANCE IS LOW SO ALL THE CURRENT FLOWS THROUGH THE INDUCTOR AND WHEN THE FREQUENCY IS HIGH ALL THE CURRENT WILL FLOW THROUGH THE CAPACITOR BECAUSE AT THAT POINT THE REACTANCE OF THE CAPACITOR IS LOW. SO WE OBTAIN A V-SHAPED GRAPH WITH THE PEAK OF V INDICATING THE REJECTION OF CURRENT.
What the advantages for preamplifier?
The job of a preamplifier is to turn a low-voltage, high-impedance signal susceptible to signal degradation, into a higher-voltage, low-impedance signal. This process is often referred to as adding gain, and preamplifier specifications often refer to how much gain the preamp provides without introducing audible noise. The output of the preamplifier can then be safely sent along to a power amplifier that will raise the current to levels that can drive speakers.
Does the servo motor contain the servo?
A "servo motor" and a "servo" are the same thing.
Servos are constructed from three basic pieces; a motor, a potentiometer (variable resister) that is connected to the output shaft, and a control board. The potentiometer allows the control circuitry to monitor the current angle of the servo motor. The motor, through a series of gears, turns the output shaft and the potentiometer simultaneously. The potentiometer is fed into the servo control circuit and when the control circuit detects that the position is correct, it stops the motor. If the control circuit detects that the angle is not correct, it will turn the motor the correct direction until the angle is correct. Normally a servo is used to control an angular motion of between 0 and 180 degrees. It is not mechanically capable (unless modified) of turning any farther due to the mechanical stop build on to the main output gear.
Voltage across resistor is doubled the current is?
Ohm's law states that the voltage across a resistor is the product of the current times the Resistance or V=I x R (I times R). V is Voltage, R is Resistance, and I is Current or Amperage. So if the Voltage is doubled and Resistance stays the same, the Current will be doubled.
Why the number matrix in phone is of 4x3?
NOT QUITE AN ANSWER I don't know why, from a historical perspective. Possibly because it's the simplest way to arrange the keys using the tone dialing scheme. The individual keys' dialing tones are created by mixing two tones. There are three tones for the columns, and four for the rows. Each key makes a predefined combination tone.
What is Diagram of hay's bridge and its advantages?
1. Draw the diagram of Hay's Bridge, and explains its feature.
What are the application of Schmitt trigger?
The application of Schmitt Trigger is as follows:
1.squaring circuit
2.sine-to-square comparater
3.amplitude comparater
4. as flip flops
