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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 bandwidth and Q factor for a good tuned amplifier?
It depends on the signal you are trying to receive.
For instance, the AM frequency band lies around 500KHz to 1700kHz. Lets say you have a tuned amplifier such that the resonant frequency was set roughly in the middle of that band at 1000kHz (1MHz). AM radio stations typically space out their broadcasts 9-10kHz.
So if Q=f_resonant/f_bandwidth
the Q of a tuned amplifier with a bandwidth of 10kHz (which would be decent, maybe a little spill over), would be:
Q=1Mhz/10kHz
Q=100
The higher the Q, the greater the selectivity. Too high be a bad thing too.
Stay out of the LNB ! It's already optimized at the factory before it's shipped
to the dealer. Can you think of any reason why a device capable of more
performance would be adjusted for lessperformance by the manufacturer ?
I can't either.
The steps available to you to enhance satellite reception are ...
-- use a larger reflector (dish)
-- make sure the dish is accurately pointed toward the satellite
-- keep snow, ice, rain, leaves, tennis balls, and bird droppings out of the dish
-- make sure the polarization of the feed assembly is properly set
-- make sure that the aperture of the feed is located precisely at the focus of the dish. Items #2, #4, and #5 were the responsibility of the installer when he delivered
your system. Those guys work under incredible time pressure, with a quota of
installations to complete each day no matter what conditions they find, and
they're shamefully underpaid. It's not unthinkable that the installer might have
called it
totally optimized to the last tenth of a dB. Those fruits hang much lower than
the likelyhood of digging into the LNB and improving it. (Plus, when you give up,
you'll never get the weather gasket properly reseated, and it'll start taking in rain.)
How does a field coil speaker work?
A: A speaker has a magnet and the wire is suspended in a zone by a cone whereby +/- current will make the coil move up or down moving the coil and moving the cone causing air displacement as waves of pressure that our ears can detect as sounds in our brains.
What are the applications of milliman's theorem?
One application is to determine the neutral current in an unbalanced wye (star) connected load.
How can you transmit voice signal using ask modulation?
The only way is to digitize the audio signal and send it as data
What is the selection criteria for resistors?
Following Points needs to be considered
1. Value
2. Wattage (twice the calculated one recommended)
3. Tolerance
4. Resistor Material
5. PC board assembly
How can tell the resistance of a resistor?
Resistors are electronic segments. They are shading coded with stripes to uncover their resistance esteem measured in ohms and additionally their assembling resilience. There are two sorts of shading codes, four band and five band. To begin with, the four band. Discover the resilience band, commonly it will be gold. Beginning from the flip side, distinguish the first band ,record the number connected with that shading; for this situation accept the shading is Blue, in this way the number is 6. here accept it is red, so record a "2" beside the six. Presently read the third or "multiplier" band and record that number of zeros. In the event that the "multiplier" band is Black don't record any zeros. On the off chance that the "multiplier" band is Gold move the decimal point one to one side.
In the event that the resistor has one more band past the resilience band it is a quality band. Perused the number as the '% Failure rate per 1000 hour'. This is evaluated accepting full wattage being connected to the resistors.
1% resistors have three groups to peruse digits to one side of the multiplier. They have an alternate temperature coefficient keeping in mind the end goal to give the 1% resilience. Should you experience a resistor and don't have a clue about the shading codes, utilize this edge page above to decide its resistance esteem.
What is the name for a positively charged conductor through which electrons flow into a device?
Anode
The name for a positive charge conductor through which electrons flow into a device is called the life conductor.
What is subscriber identity module in gsm?
Brahmajyothi
What is sweep time in an oscilloscope?
Sweep time in an oscilloscope refers to the duration it takes for the horizontal sweep of the display to cover one complete cycle of the input signal. It is typically measured in seconds per division, allowing users to adjust how quickly the oscilloscope scans the signal over time. A shorter sweep time provides a more detailed view of rapid signal changes, while a longer sweep time can display slower variations more clearly. Properly setting the sweep time is crucial for accurately analyzing signal behavior.
Are subthalamopallidal fibers and striatopallidal fibers the same thing?
No, they are not the same, but they share a common target (the pallidum).
Subthalamopallidal fibers project from the subthalamic nucleus to the globus pallidus.
Striatopallidal fibers project from the striatum into the globus pallidus.
5 hp moto 1500 rpm 3 phase winding calculation
What is RMS value of an AC Sinusoidal Waveform and the power they carry?
Hi,
RMS is voltage X .707 and the power is voltage X current.
Hope that helps,
Cubby
Which of Voltage drop is the main consideration while designing?
The size of the wire is the main factor when dealing with voltage drop. The idea is to maintain the voltage and a specific amperage at the load end of the circuit.
What has a 555 timer IC in it so I can desolder it and use it?
The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator,
the free running frequency and duty cycle are accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output circuit can source or sink up to 200mA or drive TTL circuits.
There is little point in desoldering one since they are very cheap to buy since the chip is nearly thirty years old.
NE/SA/SE555/SE555C Timer circuits are all over the net.
