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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
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2 amps. If it is D.C.
How did the microchip change computers during the 1990s?
”be microchip made computer smaller; They could be used in more places.” -apex
What is the effect of inductive load on a single phase full wave bridge rectifier?
rectifier is used to resist the current likewise in bridge wave rectifier ,the inductive load is used to resist high amount of current because in bridge wave we cannot resist the current by using rectifier ..so we are using inductive load here
What is the harmonic telegraph and how does it work?
How do you calculate rating of 11 kv transformer?
The KVA rating of a transformer is based on how much heat the transformer can dissipate. The BIL rating is based on how well the windings are insulated. There are other "ratings" as well. Rough calculations can be done, but tests are generally performed to prove the calculations (transformer designers will design on the conservative side to insure the transformer meets specification). These type of calculations are best done by a computer. You will struggle to determine the hot spot max temperature rise in a transformer by hand.
If you connect two identical AC to DC converters together in series does the output amperage change?
Wiring the DC outputs of the 2 converters in series would double the DC output voltage but not the current (amperage). The maximum safe output current would just be the same as the rating of the convertor which has been designed for the least current output. So be sure to check the rating plates of the two convertors to see which one has the lowest output current: that is the maximum current your load device should take. Yes you can do them in series. You take the positive of one and connect it to the negative of the other, then the other positive and negative are still pos. and neg.,,,,,,,,,,,,,,, This will double the VOLTAGE but keep the AMPERAGE the same. ,,,,,,,,,,,,,,, I do not know if it will actually work or not on A transformer though. For parallel : You connect the pos. to pos. and neg. to neg., This will keep the VOLTAGE the same, and double the AMPERAGE.,,,,,,,,,,,,,,,, I don't know if this will work or not either. This will work on BATTERIES, I am not sure about transformers. Re the parallel case mentioned above, that is a very well-worded answer because it is cautious about saying what is likely to happen! To illustrate that case: you have a 12 volt DC car light bulb which is rated at 60 Watts so it takes a current of 5 Amps. You want to power-up the bulb from the mains using two AC to DC converters which each have a 12 volt DC output voltage but a rated output current of only 2.5 Amps each. Wiring the DC outputs in parallel could work to allow double the current output of a single converter to be produced BUT ONLY IF THE TWO CONVERTERS WERE CAREFULLY WIRED with their DC + terminals (or wires) connected together and their DC - terminals (or wires) connected together. *** (See note below.) However, whilst the resulting output voltage might be close to the output voltage of one of the converters, that cannot just be assumed! Particularly if the converters were not identical (if they were of different makes and/or power outputs, say) then the different slew rates of the convertors could cause the final output voltage to hunt around as the two converters tried to control each other. This voltage hunting would be accompanied (or caused by!) a current circulating between the two converters that was much higher than they were designed to handle. If they were badly matched such an unstable situation could lead to serious overheating and maybe a burnout of one of the convertors, if not both, even if there was no actual visible smoke and/or fire. (However this is not likely to be as bad as the situation described in the Note *** below.) Such voltage hunting and higher than normal output current circulating between the converters (please note this does not involve the attached load - say a light bulb - at all!) might not be visible using normal test meters but, if present, would be seen on an oscilloscope. To be safe - and to help avoid any overheating or burning-out of one or both of the converters - if you wished to try using them in parallel it would be very wise to wire a proper lab-type variometer into the AC mains feed and, whilst everything is switched off, attach your desired load to the parallel-connected outputs of the two AC to DC converters. Then do this test: very slowly bring up the AC supply voltage from zero, measuring both the DC output current and voltage of each converter all the time. You should also watch and feel the adapters throughout the test to be able to detect any signs of overheating well before the full mains voltage is tried. If you don't have the right kinds of controllers and instruments to measure what is really happening it would be best not even to try to do the above parallel-connecting "blind" at all. ("Blind" meaning "without instruments".) Instead the best plan would be to obtain a single AC to DC converter which has been designed to give the desired output current at the desired voltage. *** Note : IF THE CONVERTERS WERE WRONGLY WIRED with the DC + terminals (or wires) of one connected to the DC - terminals (or wires) of the other THERE WOULD BE A MASSIVE CURRENT CIRCULATING BETWEEN THE TWO CONVERTORS AND, IF FULL MAINS VOLTAGE WERE SUPPLIED, BURNOUT IS PRETTY MUCH GUARANTEED!
Difference between voltage and current?
Voltage is electrical potential, measure in derived units of volts, which is joules per coulomb. Current is electrical flow, measured in derived units of amperes, which is coulombs per second. Stated in other terms, voltage is energy per charge, while current is charge per time. That makes power, or watts, equal to energy per time, and that is joules per second.
If you think of the water system analogy, volts is sort of similar to pounds per square inch (though not completely so), while amperes is similar to gallons per minute.
AnswerVoltage is synonymous with 'potential difference' -not potential- measured in volts. Current is the flow of electrical charge, measured in amperes. The volt is an SI derived unit, wheras an ampere is an SI base unit.
How do you make a electrical earth pit?
EARTH PIT CONSTRUCTION AS PER INDIAN ELECTRICITY BOARD
1. Excavation on earth for a normal earth Pit size is 1.5M X 1.5M X 3.0 M
2. Use 500 mm X 500 mm X 10 mm GI Plate (Plate may be use as big as possible to contact more and more area of Earth for low resistance & best result)
3. Make a mixture of Wood Coal Powder Salt & Sand all in equal part
(a) Wood Coal Powder use as good conductor of electricity, anti corrosive, rust prove for GI Plate for long life.
(b) Salt use as electrolyte to form conductivity between GI Plate Coal and Earth with humidity
(c) Sand has used to form porosity to cycle water & humidity around the mixture
4. Put GI Plate (EARTH PLATE) of size 500 mm X 500 mm X 10 mm in the mid of mixture
5. Use Double GI Strip size 30 mm X 10 mm to connect GI Plate to System Earthling
6. It will be better to use GI Pipe of size 2.5" diameter with a Flange on the top of GI Pipe to cover GI Strip from EARTH PLATE to Top Flange
7. Cover Top of GI pipe with a T joint to avoid jamming of pipe with dust & mud and also use water time to time through this pipe to bottom of earth plate
8. Maintain less than one Ohm Resistance from EARTH PIT conductor to a distance of 15 Meters around the EARTH PIT with an other conductor dip on the Earth at least 500 mm deep.
9. Check Voltage between EARTH PIT conductor to Neutral of Mains Supply 220V AC 50 Hz it should be less than 2.0 Volts
Yes, but technically its an aircraft. Although a aircraft is considered a vehicle. So you can also refer to it as a vehicle.
Yes in the broadest sense of the word, a powered conveyance, surely. however like Ships and RR equipment they prefer to use the specialized terminology of aviation such as airplane, airliner, aircraft, etc. vehicle is usually confined to ground based ve3hciles such as Motor vehicles, a Tank is a military vehicle, for example, the terminology vehicle is too broad for aircraft usage, normally a Vessel is any watercraft or Ship and is somewhat formal, like the French have the rank, Captiaine de Vaisseau, Lit. Captaqin of a Vessel. we would say- Ship-Captain, it ranks in the Naval swchyeme4 beteween captain and lowest rear admiral rank, the French do not use the term Commodore as this suggests, by pun a Golden Toilet Bowl!
Low current will equal low power losses due to the resistance of the cable. I squared R. (I is transmission current and R is resistance/Metre of cable) by increasing the voltage for the same amount of power the current decreases. Power transmission will take that advantage to transfer less current for the same amount of power.
You have crystals labeled megacycle you need to convert to MHz?
You are in luck ! The math to do this is actually pretty simple. "Cycle" is the old name for what is called "Hertz" today. They are exactly the same thing. You don't need to do any converting. Examples: 3.59 Megacycles = 3.59 MHz 6775 MHz = 6775 Megacycles Cycles or 'cycles per second' = Hertz = Hz Kilocycles = Kiloherz = KHz Kilomegacycles = Gigaherz = GHz
Where does electric choke wire for 1968 Volkswagen go?
The electric choke wire connects to the electric choke assembly on the carburetor. It's a round, black plastic assembly that is on the side of a STOCK carburetor. There SHOULD be a connection on the "HOT" side of the coil that lets you connect the choke wire.
What is the effect of capacitance in high frequency circuits and how it is getting added?
First, capacitance is the resistance of something to a change in voltage. And capacitance exists anywhere there is a conductor that is insulated from another conductor. With that definition, anything has capacitance. And that's correct. It is also the key to understanding the capacitance in high frequency (radio frequency or RF) circuits. The fact that a circuit had conductive pathways and component leads and such means that there is a lot of little bits of capacitance distributed around the circuit. The capacitance is already there; it isn't "added" later as might be inferred. Normally, this bit of capacitance isn't a problem. But at higher and higher frequencies, it is. Remember that the higher the frequency of an AC signal, the better it goes through a given cap. So at higher and higher frequencies, the distributed capacitance in the circuit "shorts the signal to ground" and takes it out of the circuit. The RF is said to be coupled out of the circuit through the distributed capacitance in that circuit. The higher the frequency a given circuit is asked to deal with, the more signal will be lost to this effect. It's just that simple. Design considerations and proper component selection minimize the distributed capacitance in a circuit.
If a 9volt battery produces a current of 3amps through a load the resistance of the load is?
3 ohms. 9 volts across a 3 ohm resistor becomes 9/3 or 3 amps.
What is difference between generator and oscillator?
A generator is used to convert mechanical energy to electrical energy.
An oscillator is used to convert dc to ac
What is the voltage in 5 amps?
Voltage is a measurement of electrical force and amperage is a measurement of electrical flow.
They are two different things altogether.
What provides more energy to a circuit a 1.5 volt cell or a 9 volt battery?
A "D-size" carbon-zinc cell at 100 mA would have about ten times as much "energy" as a 9V carbon-zinc at 8mA. A battery in the AAA series would have about the same energy as a 9V, which should not be surprising since a D is 10 time larger than a AAA.
What is maximum voltage produced in thermocouple?
A:The best platinum thermocouple can give upto 64mv
What are 9v voltage rail made for?
9 v voltage Rail is something that is a =n electrical devise and can be used in batteries and other stuf so i dont realy know much more
What is meant by BC548 for a transistor?
It doesn't "mean" anything. It's simply the identification, the type number.
When operating as a voltage regulator the breakdown in a Zener diode occurs due to which effect?
avalanche
What is the history of AMD microprocessor?
AMD was a major supplier of various integrated circuits: logic, DRAM, the 2900 family bitslice bipolar microprocessor chipset, etc. However they lacked a single chip MOS microprocessor like those made by Intel, Motorola, Zilog, Texas Instruments, National Semiconductor, etc.
When Intel encountered a problem meeting demand for their 80386 single chip MOS microprocessor they sought out another chip manufacturer with available fabrication facilities. At the time AMD had surplus fabrication facilities and Intel and AMD quickly reach an agreement where Intel would provide AMD with the masks and other manufacturing details for the 80386 and AMD would licence some of their patents to Intel. The two companies would then share the market and sales of the 80386.
When Intel designed their 80486 single chip MOS microprocessor, they had already expanded their fabrication facilities enough that they would not need help from AMD to make enough 80486 microprocessors to meet demand. However AMD expected that the original 80386 agreement demanded Intel provide masks and other manufacturing details for successive Intel designed microprocessors (beginning with the 80486). Intel refused and the case went to court.
Meanwhile AMD began designing an 80486 microprocessor clone on their own. Intel claimed in the court case that AMD could not do that as 80486 was a trademark, but the court pointed out that trademark law does not permit trademarking of numbers. This allowed both Intel and AMD to manufacture, market, and sell their own independently designed versions of the 80486 microprocessor.
When Intel designed their 80586 single chip MOS microprocessor, because of the court decision that numbers could not be trademarked Intel chose to use a word which could be trademarked instead of 80586 and (somewhat unimaginatively) made up the word Pentium for the 80586. Of course AMD designed their own 80586 clone independently (as they had done with the 80486) and made up their own word as a trademark for it.
Ever since then when Intel has enhanced the x86/Pentium architecture, AMD has independently designed a clone supporting the new architectural features. However AMD has their own implementation ideas to improve and optimize performance, so sometimes the Intel microprocessors have had better performance and other times the AMD microprocessors have had the better performance.
