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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
Can long distance space commucating be possible in am as well as FM?
No. They dare not for fear of the deadly FM syndrome. This is a little known but fatal disease which aliens get when they us FM cause by the very poor DJs and music played.
How do you pay for apps using a iTunes gift card?
Scrolling to the bottom of the page in the App store reveals a Redeem button which is used to redeem an iTunes Gift Card.
How do u use PLL as FM detector?
To use the PLL (Phase Lock Loop) as FM detector, you need to know the Free-running frequency.
Explain if transmit baseband signal directly in a wireless system and why?
An antenna must be the order of magnitude of the, wavelength signal in size to be effective. Using only baseband transmission, FDM could not be applied and (Path loss, penetration of obstacles, reflection, scattering and diffraction. All the effects depend onthe wavelength of a signal.
How do you fix shortage in headphones?
The shortage is usually in the cables, near to the connectors where it bends a lot. Sometimes even in the connector. Replace the cable, that can help. No guarantees though..
Any photocell can be used as detecting light or NOT. It is just an inversion.
What is cylindrical capacitor?
A cylindrical capacitor is a type capacitor in which two conducting cylinders are used and the dielectric medium is placed in between them .The outer most cylinder is earthed .The capacitance of these capacitors are higher than other
How do you convert the passband frequency into baseband frequency the range of 2Ghz passband?
Use the shifting property of the Fourier transform to shift the frequency response down to baseband. Multiply the time-domain signal by a complex exponential with the frequency of the amount you want to shift the frequency response.
A: They conduct equally in both direction so there is no need to indicate polarity
What is the alpha of the bipolar junction transistor?
The change of collector current with respect to emitter current.
Typically 0.95 to 0.995. So a transistor with alpha of 0.95 might have an emitter current of 10 mA, collector current 9.5 mA.
The "missing" current becomes base current and does not reach the collector.
The more commonly used figure for current gain is beta, the ratio of collector current to base current, typically 50 to 500.
In CB MODE
It is called the common base, short-ckt, amplification factor.
What is purpose of emmiter bypass capacitor in R-C coupled amplifier?
Emitter bypass capacitor is a capacitor which provide low impedance to AC and high impedance to DC . AC is shunt then only DC appears on RC and volage gain increses.
The first country to introduce cellular phones?
the first country to introduce cellular phones was japan
How do you get a 240 volt ac light to work on a 12 volt dc batttery?
I found this light http://www.ecolivingcentre.com.au/products-page/?product_id=23 and it is the perfect size and power for a torch we are making in graphics, the only problem is that it runs on 240 volt ac current and the torch im going to make is going to have a 12 volt dc lead acid battery, is there any way that you can make the battery work with this light
What is meant by a Movie Dial on radios?
This is an obsolete term dating from the thirties- when various tuning gimmicks were attracting attention. My guess is it was some variant of the Elliptical dial- driven by a cord and pulley arrangement- and outfitted with motor drive and flashing lights akin to Movie Marquees. In the movie house usage- this type of thing was often, incorrectly, termed running lights- actually the lights did not move, but rhytmically flashed on and off- giving an illusion of a sort of conveyor belt effect. That"s my guess.
What is narrow band modulation frequency?
When the frequency sensitivity of the modulating signal is small,the bandwidth of the FM is narrow.
The narrowband FM has one carrier term two sideband terms.The modulation index is also small compared to one radian.
You need Samsung receiver dsb-b580r master pin code?
I need samsung Digital receiver dsb-b580r master password
A piece of wire stretched such that its length increases and its radius decreases will tend to have its resistance increase.
The formula for this is:
R = ρL/A
where ρ = resistivity of the material composing the wire,
L = length of the wire, and
A = area of the conducting cross section of the wire.
It can easily be seen that as area decreases resistance gets higher. In the case proposed the wire length is not reduced as it is stretched to reduce the area, this increases the resistivity as well.
How do you balance a Wheatstone bridge with one capacitor in the circuit?
Find the value of capacitor that gives you a zero output current. You can try doing ac analysis on some software or do some hand calculations to get an approximate.
Why is the capture range less than the phase locked range?
Once the PLL is in lock, what is the input (or VCO) frequency range for which it can keep itself locked is the lock range. When the PLL is initially not in lock, what frequency range can make the PLL lock is the capture range. Lock range is the parameter you should be interested in if you are looking for it's tracking behavior. But in CP PLLs, both the lock and capture ranges are the same.., limited only by the VCO's tuning range.
In modern PLLs capture range and lock range are the same. But by definition these are different and this relaxed usage in journals and books leads to these confusions.
Capture range and pull-in range are the same. Both refer to the ability of the system to acquire lock (from an unlocked state) to a frequency. Here the VCO is running at some arbitrary frequency and the disturbance required at the input to make it respond to the input disturbances thereafter is quantified as capture range.
While the VCO is responding to the input disturbance (in-lock), the amount of disturbance at the input that will cause the VCO to shun the input and run freely is quantified as lock range.
Always lock range is equal to or greater than the capture range.
Definitions from the web
Lock range is defined as the band of frequencies centered on the VCO's natural frequency over which a PLL can maintain frequency lock with an external input signal.
Capture range is defined as the band of frequencies centered around the VCO natural frequency where the PLL can initially establish or acquire frequency lock with an external input signal from an unlocked condition.
Is machine language very easy to read and understand?
Lets put it this way- there are probably about 6 people in the world who can understand machine language. It is all 1010001010100101001100101
How you design NOR gate using 2 1 mux?
If you want to have output z = A NOR B.
Make select line of 2X1 MUX = A.
Now, the first i/p line (corresponding to A =0) = B ' BAR
tthe second i/p line (corresponding to A=1) = 0.
Is it OK to mix NIMH and NiCd batteries in an electronic device?
You should NEVER mix different types of batteries in any device. The charging characteristics are different and one type will charge "harder" than the other.
Why should you be the internal resistance of the very few Amitr?
ammeter connect in series in circuit to measure the current, if the Ammeter have a high resistance it would effect the voltage value because there will be a drop voltage over the internal resistance of the Ammeter, so we desgin the ammeters with very low resistance...
What are integrated processes?
Integrated processes are as follow:
- Interpreting data
- Controlling variables
- Operational definitions
- Hypothesizing
- Experimenting
: , kindly look for their meanings if your interested: {^.*}
