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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 higher degrees can be taken after electronics and communication?
College and/or university degrees within this field can be taken at the associates, bachelors, masters, and doctorate levels.
College and/or university degrees within this field can be taken at the associates, bachelors, masters, and doctorate levels.
College and/or university degrees within this field can be taken at the associates, bachelors, masters, and doctorate levels.
College and/or university degrees within this field can be taken at the associates, bachelors, masters, and doctorate levels.
College and/or university degrees within this field can be taken at the associates, bachelors, masters, and doctorate levels.
College and/or university degrees within this field can be taken at the associates, bachelors, masters, and doctorate levels.
Definition of voltage divider?
Basically, if you have two resistors in series, then the total resistance is Rt = R1+R2. According to Kirchhoff's law, the total current entering a junction must be equal to the total current leaving it, so for a series circuit the current is the same in both resistors. From Ohm's law V=IRt and so from above V = I(R1+R2). This means that that total voltage in the circuit, V, is equal to the sum of the voltages across each resistor V1=IR1 and V2=IR2. This "divides" the voltage, so that for a 30V supply with two resistors of 10 ohms and 20 ohms respectively, the voltage across the first resistor will be 10V and the voltage across the second will be 20V. In this way a component requiring a lower voltage than the supply voltage can tap off from one of the resistors.
Digital converter box does not get signal from WDKY FOX 56 Danville Kentucky?
Maybe they're not yet broadcasting in digital (although time's running out) or it's a TV station translater transmitter (in which case, I don't think they have to switch it over to digital any time soon) or your converter box isn't sensitive enough to receive enough of a signal to make it work properly.
the total current is the vector sum of current expressed in this equation:
IT = sqrt ((V/R^2) + (V/XC-V/XL)^2))
since the voltage(V) is equal in every branch due to parallel. we can substiture the value of V to our equation. V = supply voltage (possible).
Is 48 volt phantom power safe?
CAUTION/DISCLAIMER: In answering this question, I make a basic assessment about the safety of Phantom Power. This is a basic assessment, and I take no responsibility, and this website won't, either, for actions taken following this assessment. DO NOT SHOCK YOURSELF DELIBERATLY UNDER ANY CIRCUMSTANCES. ELECTRIC SHOCK CAN KILL. If you wish to attempt something which could potentially result in shock using phantom power, TAKE ADVICE FROM GOVERNMENT INSTITUTIONS THERE FOR THIS PURPOSE (risk assessment), such as the HSE in Britain (www.hse.gov.UK).
Phantom Power is a 48 volt DC electric supply provided down the two signal cores of an audio balanced cable, usually 1-2mA, but recently up to 10. It is used mainly by the audio industry to power microphones from a sound desk using the signal cable, eliminating the need for a separate supply.
There are two possible definitions of "safe" in the context of this question. The first is risk of electric shock. Arizona State University teaches that 5mA or less is 'safe'. According to this definition, Phantom Power is safe. This is also borne out by many professionals using this technology on a daily basis, and who sometimes get shocked. It is very doubtful it would affect the heart, and probably wouldn't cause burns, either. However, as I have explained above, take normal electrical precautions (disconnect before working on/don't touch two wires) when using such equipment. Remember that Phantom Power uses earth as it's neutral, and thus it is easier to be shocked than most equipment.
The other side to this is whether it is safe to use Phantom Power on equipment not designed to receive it. This issue arises when Phantom Power has to be applied to all channels on an audio mixing console. This is known as Global Phantom Power. In most cases, microphones which don't use Phantom Power aren't affected: Global Phantom Power is a feature on many desks, and something microphone manufacturers take into account. Sometimes, the power supplied by the desk may not be adequate for modern microphones (you may end up with a 1-2mA supply for a 10mA microphone).
However, one note of caution. If you have equipment which can be powered by Phantom Power or by battery, it is advisable to remove the battery when connecting to Phantom Power.
How the floppy disk drive getting power?
After you mechanically install it into the slot of the computer, you have a wire that connects to the mother board(I believe).
MCM is another measure of wire gauge. It is somewhat confusing but it starts at around 40 gauge being the smallest wire up to the largest gauge of 1. from there you have oughts which is from 1 to 4 (1 ought, 2 ought etc) and then you have MCM which is circular mils. MCM can range from something as small as 250 mcm up to 2000 mcm.
Another Answer
The abbreviation, 'MCM', stands for 'thousand circular mils'. A 'circular mil' is a North-American method of measuring the cross-sectional area of a circular-section conductor (Europeans use square millimetres for conductors of anyshape).
A 'circular mil' is obtained by squaring the diameter of a circular-section conductor, expressed in mils. A 'mil' is one-thousandth of an inch. As the constant, 'pi', isn't taken into account, it should be obvious that a circular mil is, therefore, a figure representing a cross-sectional area, rather than a true measure of that area.
If necessary, in order to obtain a true cross-sectional area, circular mils can be converted into square mils.
How many valence shell electrons are there in semiconductor atoms?
Silicon, the most widely used semiconductor, has four valence electrons. This places it in between the conductive metals, which have one to three valence electrons, and the non-conductive non-metals which have five to eight valence electrons.
fg means fake ground iif somebody comes walkiing iin tha house nnd tha floor brakes that iis called fake ground
What is the definition of reserved power?
A power set aside by the Constitution for the states or for the people.
What is the difference between h orizontal and vertical organizational structure?
Vertical organizational structure means a strict top down or bottom up structure. Typically, a rigid top down vertical organizational structure has been a favored form for many business and other type organizations. In such an organization, the chain of command is usually very important and breaking it is considered very wrong. In faster moving, dynamic conditions, a vertical organizational structure can become very inefficient, for example, requiring decisions to slowly go through many people along the vertical chain of command before actions can be made by those who need permission to act. Horizontal organizational structure means a flat or closer to flat organizational structure. In a perfectly horizontal structure, there are no leaders, so usually this means a structure that is still vertical, but has been made more horizontal than what is typically referred to as vertical. Where the line is drawn is not exactly clear to me and perhaps depends upon all factors in a particular example and conversation. In general, any large organizational structure has both vertical and horizontal aspects to it and depending on whether it is considered to be more vertical or more horizontal results in what it is called. Vertical organizational structures also tend to create boundaries between departments or branches in a larger organization, because for a person down one branch must go up the chain of command on his branch and then down the chain of command on the other branch in order to interact with someone down the chain of command on a different branch. Having to do this tends to make such inter group interaction so hard as to strongly discourage it. Just think "bloated bureaucratic obstacle course from hell". To have a more horizontal organizational structure means cutting out levels of mid-management which results in allowing more horizontal level of authority. It does grant more authority to various horizontal layers of employees. This can help improve communication, remove inefficient bureaucratic steps, reduce unnecessary work and speed up the whole process. The problem with this can be whether or not the employees given this extra responsibility are in fact capable of handling it. This becomes the trade off between the two organizational forms and why some organizations vacillate between being more vertical and more horizontal are different times. Finding a good mix greatly depends upon the people actually making up the structure, so when the people change, how well the structure is working can change too, thus requiring a change towards being more or less vertical or horizontal. There is another structural form called the circular organizational structure. I'm not an expert in this field, so I'm only giving my best understanding of this question. I find elements of horizontal and circular organizational structures to be so close as to not really understand the difference. However, being an engineer who has worked on a team in an organization that tended to be fairly horizontal, I think of circular having a particular meaning. To me, it means a process of having the leader provide overall direction, defining the goal, and then creating a cycle of work and exchange of information that repeatedly goes through the group, back up to the leader, so that everyone involved inputs ideas and keeps good strong communications open through all involved. By this, I mean that the leader is open to hearing and understanding what those under him are saying and keeps actively abreast with what they are doing. Similarly, as various members of the team are working on things, they keep others abreast of what they are doing, so that people stay on the same page. But, isn't this just part of being a fairly horizontal organization? Well, English is not one of my better skills, so I'll leave my attempt to answer this question as it is. Maybe an expert in organizational structures will come along and give a better answer.
Why do radio waves with extremely long wavelengths such as ELF radio waves need huge antennas?
Answer: An antenna is a tuned circuit, so it have to be tuned to the wavelength of the signal that it will transmit. If the antenna is not tuned properly some of the transmitted power will be feed back to the transmitter and will damage the output stage, SWR (Standing Wave Ratio) is very important, that is the ratio between the power that is transmitted by the antenna and the power that is fed back to the transmitter a zero is ideal but not always possible.
The lower the frequency the longer the wave length and a 1/4 wave length is the minimum length that will give one a good SWR. The formula to use when one design a antenna is 300/frequency in MHz, if the frequency is 30 MHz then it is 300/30 = 10 Meter divide it by 4 to get the length of the 1/4 wave antenna that is 2,5 meters.
Note: The antenna have to be multiples of a 1/4 wavelength like 1/2 wave or full wave, a 5/8 length can be used but it will need a L/C circuit at the input of the antenna to tune it to the frequency.
What radios contain intermediate frequency transformers?
AM (amplified modulation) radio contain the intermediate frequency transformer.it has IF to mixed the carrier signal into local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequency are used in superheterodyne radio recievers, in which an incoming signals is shifted to an IF for amplication before final destination is done.
How stagger tuned amplifier works?
This deals with detailed information about filter theory.
One source is the Van Valkenburg and Shaman text Analog Filter Design.
Another text is by Chen, similar title.
Putting three poles at the same break frequency reduces the bandwidth.
At the designed corner frequency the gain response is now down by 9 dB so
the 3 dB point is pushed to a lower frequency.
Stagger tuning gives the three pole roll off but also maintains the designed bandwidth.
For example:
If you want a three pole Butterworth characteristic you can use a state-variable op-amp network tuned to have a Q of 10 (or a zeta of 0.5, depending on your background) and a single LPF op-amp stage.
Neither of these is tuned as a Butterworth but together they give the effect of a three pole Butterworth.
The State Variable op-amp network has several other names such as the Tow-Thomas Biquad or the Huelsman-Kerwin-Newcomb network.
It can provide a biquadratic function, meaning a quadratic in the numerator and a quadratic in the denominator.
How do you get demos for your psp for free?
unofficial demo center is a good site note all demos from most sites is free
see answer for this question at following url: http://books.google.co.in/books?id=-SkJmxh8d58C&pg=PA199&lpg=PA199&dq=de+sauty+bridge&source=web&ots=ChikVYkeOC&sig=YM9kVBbUuE0EDTJAS7VOEmC4sGo&hl=en&sa=X&oi=book_result&resnum=3&ct=result#PPA200,M1
What are the two basic types of electric circuits?
There are many different types of circuits, but, in basic electricity, perhaps the two most common types of circuits are parallel and series.
A parallel-connected circuit is one in which the current divides into two or more flows with at least one load on each flow, whereas a series circuit has only one flow that passes through two or more consecutive loads. The input voltage to a parallel-connected circuit stays constant - so every branch of the circuit gets the same voltage from the power supply - but there is a different current flowing in each branch dependant on the resistance of the loads in that branch. Overall, no current gets lost because any current entering a particular junction (leading to branches) is always equal to the current leaving that junction.
In a series-connected circuit the input current stays constant and the voltage is divided amongst the loads which are connected like links in a chain: each load component (a light, a resistor, etc.) is connected "head to tail" to the next one in the series circuit.
A more complete answer
Actually there are four types of circuit, not two. These are series circuits, parallel circuits, series-parallel circuits, and complex circuits.
'Complex circuits' (which are not necessarily complicated) describe any circuit that is not series, parallel, or series-parallel - a Wheatstone Bridge is an example of a complex circuit.
The techniques for solving series, parallel, and series-parallel circuits cannot be used for solving complex circuits. Instead, network theorems, such as Thevenin's and Norton's Theorems must be used.
Differences between LED and photodiode?
The Simplest Difference is that LED emits Light, & Photodiode converts Light energy into electrical Energy
What is the equipment required to do a CT polarity test?
You shouldn't need to perform a polarity test on a CT, as its terminals are normally identified with polarity markings.
Brief explanation about the types of waveguides?
A waveguide is a structure which guides waves, such as electromagnetic waves or sound waves. There are different types of waveguide for each type of wave. The original and most common meaning is a hollow conductive metal pipe used to carry high frequency radio waves, particularly microwaves.
Waveguides differ in their geometry which can confine energy in one dimension such as in slab waveguides or two dimensions as in fiber or channel waveguides. In addition, different waveguides are needed to guide different frequencies: an optical fiber guiding light (high frequency) will not guide microwaves (which have a much lower frequency). As a rule of thumb, the width of a waveguide needs to be of the same order of magnitude as the wavelength of the guided wave.
