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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
Is communication on the chat line cheating?
If it's not romance, but friendship, then no, it's not cheating. I talk to many men (and women) around the world, on a friendship basis. I don't search for these men, but people get caught up on certain subjects from a board and you end up talking to different people and get their views. Right now I am talking to a young man in Africa re problems there. We exchange ideas as to how to better things there. It's interesting and we certainly learn something from each other. Only you know what "you are up too." If you know deep down that the fact of meeting some guy/girl on the web is a possibility, then you're looking for trouble.
How do you find out if your husband has a second cell phone?
i`m so lucky to have come across Marie i have been suspecting my wife of cheating on me ,then i texted for help she gave me access to her phone without her knowing reach her infocyberrecoveryinc@gmail. com and whatsapp:+1 7127594675
Necessary standards of conduct and dress are often explained in the?
Necessary standard of conduct and dress are often explained in the code of conduct.
Lead solder is a mixture (alloy) of lead and tin (in different proportions) that has a lower melting point than either of the components. It is used to join metal components together in electronics, lead and zinc came in stained glass windows etc.
There are also silver and gols solders for jewelry.
Most modern operating systems see computer mice as plug-and-play devices. This generally means no installation is required as many operating systems have default drivers that can be applied. Otherwise, if a mouse requires installation, manufacturers generally include a CD with drivers.
Is photo voltaic cell is an active transducer?
A photovoltaic cell is an active transducer. This is commonly referred to as a strain gauge or simply known as a solar panel.
What is Population Resistance?
Population resistance is also known as pesticide resistance. Pesticide resistance describes a pest population's increasing resistance to a pesticide that use to be effective in terminating said pests.
A block diagram of SMPS has a main filter, primary rectifier, and power switch. It also has an output transformer, secondary rectifier, smoothing circuit, and controller.
What is an infrared transceiver sometimes called?
An infrared transceiver is sometimes called a radio wave. Another term for infrared transceiver is also a microwave oven. Microwave towers are used for cell phone use. Microwaves ovens in the kitchen help to heat food.
What is the purpose of inductor?
The fundamental purpose of an inductor is to
store electrical energy in a magnetic field.
Bandwidth is the amount of information that can come through. The frequency is how quickly the information can come through.
List of electronics and communication companies in rajasthan?
There are many core companies in electronics and communications. Some of these are Bharti Airtel Ltd., Idea, Spice, Virgin India, Tata Indicom, and Connect Ping.
What is different between electricity and electronic?
Electricity is the flow of electrons through a cable. Electronics is set of conductors and semi-conductors (again kind of cables) through which electrons flow in specific way, needed by the machine.
How much money do x-ray technician mack in North Carolina with milatary back ground?
Depends on their experience and what the facility is willing to pay them. North Carolina has both public and private hospitals, and the pay rates vary. Your level of experience would affect your pay rate... the military background wouldn't get you paid any more, however.
"Xerox Dallas" is most likely a reference one of several offices of Xerox Corporation in Dallas, Texas or the surrounding area. Among other operations, Dallas is headquarters to that portion of Xerox Corporation that was once Affiliated Computers Services (ACS).
How does a light emitting diode work?
Light Emitting Diodes, commonly called LED's, do dozens of different jobs and are found in all kinds of devices. Among other things, they form the numbers on digital clocks, transmit information from remote controls, light up watches and tell you when your appliances are turned on. Collected together, they can form images on a jumbo TV screen or illuminate a traffic light. :)
Basically, LEDs are just tiny light bulbs that fit easily into an electrical circuit. But unlike ordinary incandescents, they don't have a filament that will burn out, and they don't get especially hot. They are illuminated solely by the movement of electrons in a material, and they last just as long as a standard transistor. Hope this helped.
That talks only about usage, which is all well and good but totally fails to answer the original question of how. Also incandescents operate "solely by the movement of electrons in a material", so that is not really a difference; the difference is in the way those electrons move.
LEDs are ordinary semiconductor diodes, except that they are made of different semiconductors than silicon or germanium. Semiconductors composed of multiple elements that by themselves are not semiconductors (e.g. Aluminum gallium indium phosphide = AlGaInP for red, Indium gallium nitride/Gallium(III) nitride = InGaN/GaN for green, Indium gallium nitride = InGaN for blue). Such semiconductors are different from silicon and germanium in 2 ways:
- larger bandgap between conduction and valence energy bands
- transparency to visible light; both silicon and germanium are opaque
The larger bandgap of these semiconductors means that when electrons and holes combine at the junction they release enough energy to produce photons of light, not just phonons which only vibrate the crystal atoms and cause heating as in silicon and germanium with their smaller bandgap. This larger bandgap also means that the forward bias voltage is larger (between ~1V to ~5V depending on material vs. 0.7V for silicon or 0.2V for germanium).
The transparency of these semiconductors allows the photons once generated to escape from the material and be seen, instead of being immediately absorbed as they would in an opaque material and cause heating only.
Going back to the difference in operation between incandescents and LEDs:
- the movement of electrons through the filament of an incandescent light bulb is a phenomenon explained in classical physics, this movement is continuous and causes resistance heating making the filament hot enough to glow
- the movement of electrons (and holes) at the junction in an LED is a phenomenon explained in quantum mechanics, this movement is a sudden jump between energy levels in atoms and directly produces light photons
What is the zip code for Sioux Falls South Dakota?
Sioux Falls, SD has several zip codes:
57101
57103
57104
57105
57106
57107
57108
57109
57110
57117
57118
57186
57193
57197
57198
In the airplane where is the stored energy?
In a few small model airplanes, the energy of propulsion is stored in the
elasticity of a twisted rubber band.
Some full-sized airplanes have no on-board energy storage. They are given
some gravitational potential energy by being towed to altitude by another
aircraft, and then settle slowly to the ground. These are 'sailplanes' or 'gliders'.
A few full-sized airplanes have been powered by the food energy stored in the
individual who pedals a mechanism in order to fly them. A few others have been
powered by the solar radiation that impinges upon photovoltaic panels arrayed
on the wings and fuselage, with no on-board energy storage.
The vast majority of present-day airplanes store the chemical energy for their
operation in large tanks inside their wings, in the form of gasoline molecules.
Maximum rated voltage for a diode is?
Highly variable, depending on the type.
For example a 1N457 is rated for 79 volts, while a 1N4007 is rated for 1200 volts.
What component of an AM transmitter generates the carrier frequency?
The classic AM transmitter layout is a master oscillator, followed by a "pen", or penultimate amplifier, followed by a PA or power amplifier. The master oscillator, which is probably crystal controlled, generates the carrier frequency.
How many zeros are in a nonillion?
In the United States and modern-day English uses, a nonillion is 1 followed by 30 zeroes.
In archaic United Kingdom and continental European usage, a nonillion is 1 followed by 54 zeroes.
What does an average capacitor do in circuit boards?
A capacitor works like a kind of rechargeable battery.
They have many uses in circuitry boards.
They can be used in order to filter out certain frequencies ranging from sub-audible to frequencies up in the high THz range.
They can be used to provide a lot of electrical power very fast. This is the use in a typical Audio Power Amplifier.
They can be used as frequency generators in combination with other components.
Although this latest use is not very accurate due to quite a lot of temperature drift in the value, many circuitry boards are not dependent on a very stable oscillating frequency.
There are so many uses of capacitors that it is difficult to describe them with one single sentence.
Their key feature however is their ability to recharge and discharge very rapidly.
Big capacitors are mainly used for instant access to a lot of power.
Small capacitors are mainly used as a kind of analogous form of holding some kind of information.
Where as they all work like a kind of battery, they do not have the very limited charge/recharge lifespan that batteries do. They can be charged and discharged millions of times with hardly any noticeable effect to their capacity.
The difference however is that most of them can not be used like a battery because they often discharge "quickly" over time. If you charge one capacitor, the charge will be gone in a matter of hours or days. (This do depend on the type of capacitor though.) The charge they hold, although rapid available power, it is not by far as much as a standard battery can hold.
Where as a capacitor can discharge 1 ampere in a fraction of a second, a normal AAA cell battery need much much longer time for safely discharge such a load.
