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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 is the purpose of determining frequency response?
frequency response curve helps us to find the bandwidth of particular amplifier circuit.
Bandwidth is the range of frequency at which the amplifier works better....
No it will not. In order to get electrical activity you need motion. Either the magnet or the wire must move.
Why does a capacitor has an infinite memory length?
because the one who invented capacitor has a memory thats why it has a memory just like you
How many cycles per second does a 1.2 kHz wave have?
1,200. Khz means kilohertz. Kilo equals one thousand. Hz, Hertz equals one cycle per second.
How do you construct other logic gates from nand gate?
NAND gates are universal gates and can be used to construct any of the logic gates (AND, OR, NOT, NOR, XOR, XNOR). The easiest way to figure this out is to use basic Boolean Laws. For instance, to create a NOT gate (A'), tie one of the NAND gate's input to logic high: (A+1)' = A'. To create an AND gate (AxB), use two NANDs in series, with the second one configured as an inverter: (AxB) = ((AxB)')'
Can the power supply provide a negative voltage output?
Yes. Depending on the design, the power supply can provide any voltage desired.
How do you check transistor faulty or not?
the best way is to compeair the data sheet of that transistor to the readings of that transistor. . . . .and u can get the readings of that transistor by using a fungction genrator and a c.r.o
How does a capacitor act as battery?
Only in that it can store energy. However, the energy stored in a capacitor is usually very small, compared to a battery; and it can only hold the energy for a short time.
What is the purpose of the light-emitting diod?
Light Emitting Diodes (or LED's) serve many purposes, such as statuses (EG Computer is powered on, PC is reading from Hard disk (Power and HDD LED's)).
They can also be used to display messages (LED Boards)
New age brighter LED's are used in the Audi and BMW cars as sidelights.
4 L1GH7 3M1771N6 D10D35 1S C001
How do you build an ozone generator?
You can build an ozone generator, but you have to be carefully with the amount of ozone that produce, a home made ozone generator some times doesn't have a correct production of ozone and could be dangerous.
Read this first: http://www.epa.gov/iaq/pubs/ozonegen.htmlIf you are using this in a space where people are you will need to destroy the ozone after is is made via "collector plates" Look on line at a "electronic air cleaner" such as Honeywell
American Lung Association says .05 ppm is safe--a hairdryer running for 30 seconds in a unventilated bathroom would exceed that, so it's best to by one with the 'American Lung Association' seal on it.
$500.00 I bought one used for $50.00
If you are using it to kill mold then you need one that produces massive amounts of ozone.
That's what I need, I have thick black mold in a basement and need kill it. Water problem is gone.
They are NPN and PNP. BJT mean bipolar junction transistors. there are two P-N junctions in BJT transisters.
Mercury's core is made of iron, with a diameter of 3600 km to 3800 km. The silicate outer shell is only 500 to 600 km thick. At least some of the core is molten. Mercury's core is made of iron, with a diameter of 3600 km to 3800 km. The silicate outer shell is only 500 to 600 km thick. At least some of the core is molten.
What is the frequency range of speech?
A Deep male voice could start as low as 80Hz. A prepubescent child ranges from 150 to 400Hz
Why do amplifiers have zero output impedance?
Good amplifiers have low output impedances.
The reason is "impedance bridging".
Scroll down to related links and look at "Calculation the damping of impedance bridging or power matching an interface connecting Zout and Zin".
Am demodulator diode detector circuit?
demodulator circuit is a circuit which is used for remove all high frequency components from modulated signal.
Louder at 800 Hz 50dB or 600 Hz 30dB?
Sound Pressure Level(dB SPL) response , based on Equal- Loudness contours( ISO 226:2003 rev) and the Original ISO Std( set for 40 phons), applied in correlation to Fletcher Edmund - for Psychoacoustics, show that 30 dB @ 600Hz in quieter than
50dB @ 800Hz. ( 3rd Octave diagram range 10Hz to 20 KHz.) . FFT /sound density
and 3rd Octave are in line for this particular case.
What is used to turn the pointer of a galvenometer?
The pointer on a galvenometer moves due to magnetic force between the current carrying coil in the pointer assembly and the permanent magnet surrounding that coil.
Voltages are relative. You could, for example, build a simple resistor voltage divider with two resistors and choose the middle point as ground. You would have minus and plus voltages relative to that point then.
It is also possible to generate minus voltage (relative to voltage source) with more complex circuitry from a single source. The circuit is called a charge pump.
AnswerPositive voltage exists between the power source, and the load (Load being whatever device is being powered). Negative voltage exists between the load and the ground, or negative terminal.
AnswerYour question (and the two answers, above) confuses potential difference with potential. 'Voltage' is synonymous with 'potential difference', not 'potential'.
The two answers, above, are each describing 'potential', not 'voltage'. There is no such thing as a 'positive' or 'negative' voltage in the 'charge' sense. Voltages are absolute, whereas potentials are relative. So, if one point has a potential of +10 V with respect to, say, earth, and a second point has a potential of -15 V, then the voltage (potential difference) between them is 25 V (no sign!).
We can, on the other hand, apply signs to voltages if those signs are used to describe 'sense' or 'direction' in which a voltage is acting. For example, if two batteries are wired in opposition, we can say that the second voltage is acting a 'negative' sense to the first voltage.
We do this when we apply Kirchhoff's Voltage Law to a series circuit, when we write an expression such as: V1 +V2 -V3 = 0
In the above equation, we are saying that voltages V1 and V2 are acting in one direction, while voltage V3 is acting in the opposite direction.
What universities in USA offering courses related instrumentation and control engineering?
For colleges and universities within the United States and its territories, you can obtain this information by clicking on the related links section (College Board) indicated at the bottom of this answer box and using the sites College MatchMaker search engine. You can research colleges and universities by name, or by programs of study, or by geographical location, size, or combinations of part or all of them. The site will provide you with a list of institutions based on your request. It will give you the schools background, accreditation, degree offerings, programs of study (majors), entrance requirements, tuition and fees, financial assistance, room and board, athletic programs, school activities, etc., and a link to each institutions official web page. Practice navigating this site. It will be well worth the time and effort.
WARNING!!!
When choosing a college or university within the United States, make sure the institution has a regional accreditation. With a regional accreditation you can be assured the coursework and degree you complete will be recognized by all other colleges and universities as well as employers. Below I have listed the six regional accrediting agencies and their geographical areas of responsibility. I am disclosing the below so you do not become a victim of educational scams, institutions that are nothing more than diploma mills, or that do not have the best accreditation, and are eager to take your money for a degree that is worthless. Make sure the institution is accredited by one of following responsible agencies.
Regional Accreditation Agencies
· Middle States Association of Colleges and Schools - Educational institutions in New York, New Jersey, Pennsylvania, Delaware, Maryland, the District of Columbia, Puerto Rico, and the US Virgin Islands, as well as schools for American children in Europe, North Africa, and the Middle East.
· New England Association of Schools and Colleges - Educational institutions in the six New England states (Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont).
· North Central Association of Colleges and Schools - Educational institutions in Arkansas, Arizona, Colorado, Iowa, Illinois, Indiana, Kansas, Michigan, Minnesota, Missouri, North Dakota, Nebraska, Ohio, Oklahoma, New Mexico, South Dakota, Wisconsin, West Virginia, and Wyoming.
· Northwest Commission on Colleges and Universities - Postsecondary institutions (colleges and universities) in Alaska, Idaho, Montana, Nevada, Oregon, Utah, and Washington.
· Western Association of Schools and Colleges - Educational institutions in California, Hawaii, Guam, American Samoa, Micronesia, Palau, and Northern Marianas Islands.
· Southern Association of Colleges and Schools - Educational institutions in Virginia, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Alabama, Tennessee and Texas.
Why is the cathode-ray tube in figure 4 connected to a vacuum pump?
A Cathode-ray tube is a vacuum that is used to get the air out. Cathode rays (electrons) cannot penetrate through any significant amount of air.
For most conductors as their temperature increases their resistance?
The resistance of pure metallic conductors increases with temperature, because the resistivity of these conductors increase with temperature.
