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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
I am assuming that your batteries are 12V, also that your (12V - 240V) inverter is rated for 5KW output and it is about 95% efficient. Most big inverters are between 85% - 97%. 5KW from a 12V battery would mean a current draw of about 416A, but since the inverter is only 95% efficient the actual current would be closer to 438A. If you draw 438A for two hours, that's 876AH. Theoretically then, you would need 9 100AH batteries. The problem is that at very high current draw, all batteries AH capacity is less than the rating. You only get the whole 100AH if the current draw is 10A (1/10th the AH rating) or less. Because of that, you would probably need 10 to 12 batteries. If you used 10 batteries, each would source about 44A during full load. You would have to use very large bus bars to equalize the current draw from battery to battery. If the interconnects are too small, the batteries closer to the inverter would be forced to supply more than their equal share of the total current draw, and the ones further away less. It's generally problematic to parallel large numbers of batteries in this way. Don't even consider it unless the batteries are identical (same manufacturer, same part number, same age, same date code). The problem gets even worse when you try to recharge the pack. Suppose you pump 50A of charging current into 10 batteries. Is each battery receiving 5A? Or is one battery with a shorted cell drawing all 50 (and is about to explode...)? There's no way to tell. Even if all batteries were receiving equal charge, it would take your 50A charger almost 40 hours to recharge 10 - 100AH batteries. Ouch. Large industrial UPS systems get around this by using huge 2V cells in series. You can buy 6 - 2V, 1000AH cells, connect them in series to form a 12V, 1000AH battery and avoid all the hassles of parallelling 12V, 100AH batteries. They are not cheap, though. If you go to a battery manufacturer's website, they publish graphs for their batteries that show AH derating versus current draw. All this assumes, of course, that your load is really 5KW. If you are running a smaller load, then obviously your battery count would go down. Finally, we are talking extremely large current and power levels here. If you are not fully qualified to understand and design high current wiring systems, don't try this! 400A of current through a bad connection can do serious damage! Unless you enjoy being sprayed with molten metal from a disintegrating connection, know what you're doing or get a qualified individual to help with/inspect your work. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS. If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work
AND
always use an electricians test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure the circuit is, in fact, de-energized.
Why is output impedance kept low?
To get all the audio voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is at least ten times higher then the output impedance.
An input impedance is called also a load impedance or an external impedance.
An output impedance is called also a source impedance or an internal impedance.
== == The game board is made up of a 15-by-15 gridof cells.
What is the relationship between resistance and current in a resistive circuit?
:) It's connected together
Can you write on an iPad Screen?
You can get applications from the App Store that enable you to draw on the iPad screen. You can also get applications that allow you type up text documents and other notes. You can connect a bluetooth keyboard to the iPad and use that, as well.
What is the frequency of a video frequency oscillator?
is a tabular summary of data showing the frequency (or number) of items in each of several nonoverlapping classes.
How many parts in a transformer?
The basic parts of a transformer are the core and the windings.
However practical transformers often have many more parts:
- the core could be solid or composed of possibly hundreds of laminations
- the windings could be wound directly on the core or on one or more bobbins
- a shield may surround the transformer
- a mounting frame may be used to assist in mounting the transformer
- several solder lugs will usually be provided to facilitate connection to the circuit
- etc.
Why microwave technology is so popular these days?
transmitters & receivers can be very tiny yet quite powerful and have long range.
What is the frequency range of a SINCGARS radio?
Single Channel Ground Air Radio Systems (sincgars) can operate in VHF (very high frequency) low band 30.0000 MHz to 89.9999 MHz or VHF high band which is 90.0000 MHz to 224.9999 MHz
Why does the power point electricute me every time I stick my finger in it?
1. You are not very smart
2. If its the electrical outlet, its obviously obtains electricity. Therefore, it can electricute you
What are the different types of silicon diodes?
Silicone diodes are a specific type of diode. There are not any different types of silicone diodes to choose from.
Can you intercept radio waves with a walkie talkie?
Yes you can; I once picked up a police radio with a cheap little toy walkie talkie. But there is no way to tune it, you just have to wait till it picks up a signal, which is very rare.
What is the difference between regulated IC and the zener diode?
a zener regulator must sustain its own current to function plus the load currents IC regulator on the other hand will require very little current to sustain regulation plus there is a gain regulation that a zener do not have.
How do you reprogram the key to work the infra red receiver on a Peugeot 405?
If it is the same as the 306, which I would of thought likely, off the top of my head you get your spare key and set it to 'a' position in the ignition barrel. The new remote key you then point at the infra red receiver and hold the button down for 5-10 seconds. Hopefully then if you remove the spare key, the remote locking should then work.
No electrical power to blower motor 1990 Cadillac eldorado?
So whats the question WHY? Could be a bunch of things. How about checking the fuse first.
Transistors are generally free from which type of noise?
Partition Noise, which occurs in vacuum tubes, optical fibers etc.
Electronic devices often emit a high pitched low volume squeel. This is often the result of transformers or capacitors as current passes through them.
Alternatively, this may be signal interferrence in signal waves.
Soldering is more or less permanent unless you break it with a hammer or melt it with a torch.
How LED flashing circuit board function?
It may work in several different ways, depending on the actual circuit used. As asked no better answer can be given than the circuit board alternately turns the current in the LED on and off.
What type of electromagnetic waves are microwaves and radar?
Technically, all electromagnetic waves are the same type: electromagnetic. The only difference between them is their frequency or wavelength -- that is, how fast they vibrate. We humans categorize the electromagnetic spectrum in chunks of frequencies for our own convenience. Because the frequency of a wave affects how it interacts with matter, it's helpful to label ranges of frequencies that way.
These are the names we use from low frequency to high: Radio waves, microwaves, infrared, visible light, ultra-violet light, x-rays, gamma rays, and cosmic rays.
Microwaves are used in radar instruments, so they are commonly called "radar" waves as well.
Check out the links to see a nice graphic of the electromagnetic spectrum.
What is the total voltage of a battery containing five 2 V cells connected in series?
Total voltage output of 5 2v cells connected in series would be 10v
What other devices use vacuum tubes?
Vacuum tubes still find uses where solid-state devices have not been developed, are impractical, or where a tube has superior performance, as with some devices in professional audio and high-power radio transmitters. Tubes are still produced for such applications.
What does a no good two timer mean?
A two-timer is a cheater and a liar. They date two different people at the same time.
What are the advantages and disadvantages of RC coupled amplifiers?
Advantages,disadvantages,working principle,theory,dc biasing conditions,input and output wave forms
go to
mycircuits9.blogspot.com/2012/05/rc-coupled-amplifier_07.html
