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Electronics
Electronics are a branch of technology and science that deals with the control of the flow of electrons.
3,725 Questions
What are the measurement system stages of audio speaker?
Well audio speakers aremeasured in a few ways but i will explain a few. All speakers are measured in inches or millimeters according to the side, this measurement measure through the center. The frequency is measured in hertz. Then they are all measured in Watts.
What is the current spot price for solar grade polysilicon?
The numbers you've been viewing are for common "metallurgical grade" silicon, which must be highly refined - from native "two nines" - 99% pure - of purity to somewhere north of "six nines" - 99.9999% pure - of purity for use in photovoltaic - or "PV" - (solar) applications. For electronics applications, it's nine to eleven nines. PV benefits from trickle-down of advances in refinement of electronics-grade production, with the result that the best - and best-performing - PV grades are pushing 8 nines. Even at 6 nines, spot price has been hovering at $400 to $500/kg for well over a year.
If you're interested, metallurgical grade ("MG Silicon") is produced in reducing furnaces from common quartz sand - the stuff dirt's made of. At very high temperature and in the absence of oxygen, the silicon dioxide sand (silica sand, one of the most abundant minerals on earth) gives up its oxygen and leaves behind 99+% pure silicon - a gray metal which is granulated by crushers in preparation for sale.
For electronic applications, including those for PV, the MG Silicon is reduced (usually) with hydrogen and chlorine so as to yield gases which may be chemically refined to varying levels of purity. The resultant compounds are further processed to yield various forms of solid pure silicon, including Solar and Electronics grades.
The multi-tiered refining processes are extremely expensive to operate, so that the cost of refined silicon is several times that of MG Silicon. Long-term, large-quantity contract prices are frequently in the range of 50% of spot price level.
(JPiConsult 10/12/2009)
A demarc or DMARC is a point where the wiring of the telephone company meets up with the customer wiring. It is basically a dividing line between the outside and inside of the structure.
Basically, an electronic wallet is an encrypted storage device that holds credit card and other financial information that can be used to complete electronic transactions without re-entering the stored data at the time of the transaction.
What is meant by control electronics?
Control electronics are devices like remote controls. Control electronics are used to control other electronic devices
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the property have a lot of benifit:
* Not recommended for metal doors - the DA50L is recommended for metal doors
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* Remote Receiver with Volume Control, operates on 110 V, plugs into a wall outlet anywhere up to 150 feet of the transmitter
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* Battery Powered - 6V - Alkaline (PX28A/RC2095)
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* 32 Frequency Codes, reduces interference and 150' Range
* Thirteen sound options set at button: These high quality sounds and options are only available on selected models of Carlon Chimes.
Indoor/Outdoor Dummy Security Camera
* Outdoor/Indoor Use
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* Pan & Tilt Adjustment
* Flashing Red LED Light
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PUT KEY IN DOOR LOCK CYL AND LOCK & UNLOCK DOOR
What can cause multiple electrical problems?
Answer
It could be many things. Grounds, power lines, computer (in newer cars), battery, alternator. Repost with some specifics. Good luck. Answer I need some more info. Typically Bad Ground, or Water intrusion on BCM (Body Control Module) If the CAR is a GM it is more than likely an interior BCM. That is not even the end of it, i could keep going on and on.
Laborers. Farmers people working to help the community one day a month
When did electronics get invented?
The word electronics began to be used in the 1940s In the late 1950s the term electronic engineering started to emerge.
How long will it take to become an electronic technician in a college or technical school?
I think you should complete a diploma course to become a technician by any recognized institute of your respective country. And it should be affiliated by your country's education system. also you can become technician by doing any part time course in electronics but first one is preferred.
Do people in Africa have computers?
No. Only monkey tubes exist in Africa: you pull the monkey's tail and it positions itself as a binary 1, and you bop it on the head and it positions itself as binary 0. Usually getting all the monkeys in row to participate in the binary sequence is quite challenging - I recommend bananas laced with Valium.
In simple terms, computer is something which can compute, and you need to have electronic devices for this purpose which can do very fast and efficient calculations . Apart from computing, where will your data lie after computaion, it has be to be stored somewhere and this is where electronic memories come into play. So, it is difficult to imagine a computer without electronics.
How much electronic waste is discarded each year around the World?
I'm not sure about the numbers, but what I can say for sure is that many companies started to do a e-waste. My point is that I know for many other companies that also recycle their old IT equipment and the number of the companies that provide e-waste services is growing. I think it's something encouraging not only for the UK but for the whole world, because I think it's something like tendency all over the world.
What is an electronic component used for?
An electronic component is simply used to resist the flow of a certain current. In theory, it is connected to a circuit board and includes those resistors, capacitors, and transistors.
How electronics that affects the environment?
Electronics is not affecting environment broadly. it play minor role to affect our environ electronics is very close to friendly. but i can say that the communication which accomplished with the help of EM wave affect human health and environment both. The EM wave affect the brain of Humans . and the frequency is the fact for how much it affect us.
How long will a Duracell Coppertop battery last?
This is an unanswerable question as neither the size of the battery nor the amount of electricity drain is given. a 3000 milliamphour battery will last 10 hours if drained at 300 mA, but a hundred hours at 30 mA.
How are crystals used in the electronic industry?
This, like most other psionic topics, is widely debated. However it is well known that they DO work. The simplest answer is that nobody is really sure how they work, although there are many theories.
My personal theory (based off my own research, experience and theorising into late nights) is:
All things are made of energy, and energy resonates at particular vibrations. All things have a state of vibration. If you take a very powerful microscope, you will see that everything vibrates and moves on the atomic level. Because crystals are much more stable than a human body (or any creature's body), they are good at transmitting it. Also, as every crystal has a different vibration, and wavelength (which gives it its colour), they will each affect us slightly differently. When we have a cold, or get disease, our vibrations can be 'lowered'. The crystals raise them again. That is my theory on why crystals work.
What are the 3 electrodes of transistor?
Three legs on a transistor are represented by these letters
E Emitter =you connect your input depending on type of your transisitor neg or pos
B Base = you connect control input again depends on type
C collector = here comes your amplified output
there are 2 types of transistors PNP and NPN
there is no current flow from emitter to collector when ther is no control input at the base. a very small opposite current to the emitter polarity make current flow multiplied by the amplification factor of each transistor.
if you use a sound frequency input at the base you have amplified sound output at collector if you just use dc you have amplified dc current output.
some transistors leak current to kill that unwanted flow through collector use a small resister from emitter to base.
What is capacitors in electronics?
Capacitors have plates - separated by an insulator - which can store electric charge.
Capacitors are not the same as batteries: batteries produce electric charge from chemicals.
Capacitance = charge stored/voltage.
Capacitors are available in many different types for various applications.
Some examples are:
- for use in electronic circuits:
- miniature ceramic
- miniature tantalum electrolytic
- for power-factor correction:
- large electrolytic for small appliances
- very large oil-filled capacitors for large motors
- for general use:
- foil with paper insulation
LT 1018 Cub Cadet will not crank at all and the battery is fine?
You either have a bad battery, or your alternator is bad. What is the age of the battery? Most last about two years. I would put a trickle charger on the battery for 24 hours, then see if your battery has charged. If not the battery is bad, and need replacement. If it does, you need to replace the alternator. When I had to have my Cub worked on, the local John Deere dealer did the work. They should be able to help. Jason Check this sight for how to test charging system: http://bit.ly/15nV9m dbost
What are the disadvantages of rechargeable batteries?
They must be replaced
once you have used the non-rechareable batteries they Carnot be used again
The 7432 is a quad dual input OR gate. That means that the device contains four identical two input OR gates. It is often in a 14 pin package, and as each gate has three connections, there are 12 logic pins, a ground pin, and a power supply (5 volts) pin, making a total of 14 pins.
See
http://html.alldatasheet.com/html-pdf/51073/FAIRCHILD/7432/403/1/7432.html
For a datasheet.
