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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 companies manufacture led lights?
Anchor,Philips,Wipro,Havells are some of the led manufacturers
Let's start a list and see if anyone adds additional items: Instrumentation such as laser survey equipment Power distribution and it's integration in roads systems and population centers Sensor technology for monitoring the health of structures Computers for all manner of design and analysis Smart highway systems including motorist aids as well as notices and warnings Lighting systems for roads and population centers
What is the purpose of relay for life?
The purpose of relay for life is to raise money for cancer and find a cure for it.
Problem solving on capacitance?
WHAT IS THE PROBLEM YOU NEED SOLVED??? OR JUST THE UNDERSTANDING.... OF THE UNIT OF MEASUREMENT REPLY MARVINDKP @LIVE.COM
it is a programmable logic device which has a inbuilt memory, clock etc and is required to perform a specific task.
If you replace a 2 ohm speaker with a 4 ohm speaker you will only get one half the original power. This is usually not a problem because you rarely, if ever, run a stereo system at full power. Half power is only -3db, which is generally only one click on the volume control. It might also sound slightly different because the cross-over frequency might be different,
Why polar capacitors can store charge in one way only?
The reason that some capacitors are polarized has to do with their physical construction.
A common type of polarized capacitor is the aluminum electrolytic capacitor. These capacitors use aluminum coated with a thin layer of aluminum oxide for one plate and a conductive solution as the other plate. This strategy yields very high capacitance in a small physical volume because the aluminum oxide dielectric layer can be made extremely thin. Unfortunately, this construction only allows bias in one direction (the aluminum with the aluminum oxide coating must be the anode) because reversing the bias causes the dielectric to break down.
I believe that the chemical reaction that takes place is this: when the aluminum plate coated with aluminum oxide is given a negative charge, the Al+3 ions in the aluminum oxide are reduced back to aluminum metal (taking electrons from the plate). This liberates the oxygen from the aluminum oxide as a gas, which is why reverse-polarizing these capacitors produces out-gassing (and bursting of the physical package of the capacitor if there is no relief valve).
Tantalum electrolytic capacitors have a conceptually similar design. The anode is a tantalum wire with an oxide layer as a dielectric. Subjecting these capacitors to reverse bias also breaks down the dielectric by reducing the tantalum ion back to tantalum metal.
Lead acid batteries short circuit current?
You would have infinite amperes if there was no resistance in the battery plates, the battery terminal posts and in the wires that are shorting the battery.
But there is always resistance in those things so - depending on the thickness and therefore the effective resistance of the wires that are shorting the battery - the short circuit current will be from a few amps to many hundreds of amps and, unless someone sees it and acts quickly to remove the cause of the short, that current will continue until the battery either explodes or just runs down very fast.
I've seen them go both ways, along with the shorting wires smoking and then glowing like an electric fire, and also I have seen molten globs of hot metal dripping off from carelessly misplaced tools such as heavy screwdrivers, particularly if made of aluminum, and such things as small wrenches.
What is Mask job view of IC design?
A: When an IC is designed many layers or masks are used to make possible to control flows and junctions
What is difference between electricity and electronics?
Electricity is like static and lightning and is produced when something as a negative charge (more -electrons than +protons)
Electronics are usually devices that are powered by electricity
Is there any association of magnetic field with time machine?
No one has invented a real time machine yet, so this question cannot be answered.
Why do you use npn transistors in an astable multivibrator?
You can create an astable multivibrator with PNP, NPN, FETs, or even with NOR gates, NAND gates, or NOT gates. In fact the escapement movement in a mechanical watch is a species of astable multivibrator.
What is automatic car parking system?
I'm not sure what it is called but some cars have a computerized system that will parallel park your car without you touching the steering wheel. It may only be in the developmental phase and not actually installed on any cars, yet.
Why the epitaxial layer is now being used in silicon manufacturing process?
Epitaxy
Epitaxy is the process of growing a crystal of a particular orientation on top of another crystal such that both have the same structural orientation. The resulting structure is described as an epitaxial layer. In 1951 Gordon Teal and Howard Christensen at Bell Labs developed a process, now called epitaxial deposition, to grow a thin layer of material on a substrate that continues the underlying crystalline structure. Sheftal', Kokorish, and Krasilov described similar work on germanium and silicon in the U.S.S.R. in 1957. At the urging of Ian Ross, a Bell Labs team led by Henry Theurer used chemical-vapor deposition to add a thin epitaxial layer of silicon between the base and collector of a transistor in 1960. This approach raised the transistor's breakdown voltage while dramatically increasing its switching speed, (1961 Milestone) two important circuit-design characteristics. The added manufacturing cost of the extra process step was more than offset by improvements in device performance. The technology was quickly transferred to Western Electric and used in manufacturing silicon transistors for electronic telephone switching in the Bell System. Epitaxy
Epitaxy is the process of growing a crystal of a particular orientation on top of another crystal such that both have the same structural orientation. The resulting structure is described as an epitaxial layer. In 1951 Gordon Teal and Howard Christensen at Bell Labs developed a process, now called epitaxial deposition, to grow a thin layer of material on a substrate that continues the underlying crystalline structure. Sheftal', Kokorish, and Krasilov described similar work on germanium and silicon in the U.S.S.R. in 1957. At the urging of Ian Ross, a Bell Labs team led by Henry Theurer used chemical-vapor deposition to add a thin epitaxial layer of silicon between the base and collector of a transistor in 1960. This approach raised the transistor's breakdown voltage while dramatically increasing its switching speed, (1961 Milestone) two important circuit-design characteristics. The added manufacturing cost of the extra process step was more than offset by improvements in device performance. The technology was quickly transferred to Western Electric and used in manufacturing silicon transistors for electronic telephone switching in the Bell System.
What does communication technology mean?
communication techology is an activity that is designed and or technologies that people use to communicate.
Use second order differential equation to solve RCL series circuit?
we use charge stored in the capacitor as our variable (remember it one of the three variable). so the potential difference across the capacitor is --charge stored in the capacitor at that instance/capacitance of the capacitor. potential difference across resistor is --resistance* differential of charge with respect to time. potential difference across inductor is -- inductance*double difference of charge with respect to the time. If there is no voltage source attached with the network then sum of the total potential difference is equal to zero hence your solution.........L*d^2(q)/dt^2 + R*d(q)/dt + q/c =0
Which type digital voltmeter is the of fatest all digital voltmeter?
You mean fastest? Digital voltmeter gives reading in seconds.
The origin of barrier voltage at the junction?
When a p-n junction is formed then holes and electrons combine near the junction and some portion near the junction neutralizes.Now more electrons and holes cannot combine because of the existence of the neutral layer.They need energy to cross that layer.This raises a resistance between the flow of electrons and holes.This gives rise to the barrier voltage.
When did Jerome Lemelson invent the camcorder?
The first camcorder was invented by Jerome Lemelson in
1980. And since that time the first bulky analog video camcorders have evolved
into the modern digital camcorder, so small they can fit in the palm of
your hand, and so clear they rival even professional broadcast video cameras.
How should the two transistor junctions be biased for proper transistor amplifier operation?
- Emitter-Base junction should be forward biased.
- Collector-Base junction should be reverse biased.
The wavelength of a radio signal broadcast at a frequency of 99.0 MHz is?
The wavelength of a 99.0 MHz signal is about 9.94 feet.
Why is frequency shift keying not suitable for high speed modems?
A conventional voice radio cannot transnit data directly. Data digital voltage levels must be converted to audio using a device called a modulator, whichapplies the audio to the transmitter.
conversely,at the receiver,a demodulator converts audio back to digital voltage levels.
RF-5000 radios=>(build in)Highspeed modems,,,,,, which have Modfulator and demodullator(which permit the radios to operate with either voice or data inputs)
on the other side FSK(Frequency shift keying) only encoded binary data(0s and 1s).....
This case, Fsk is not suitable for high speed modems..............
Sandip Layek.
What is meant by a primary coil and a secondary coil?
In a transformer, the primary coil is the coil that has voltage applied to it. The secondary coil is the coil that we take voltage from. Transformers are used to step up voltage, step down voltage, or simply to isolate circuits.
