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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 would be the best medium for an environment that is subject to heavy emi?
Fiber is best.
Cat6 would be next best, but is not as good as fiber.
How does a television transmitter work?
A television transmitter works by converting audio and video signals into radio waves for broadcast. It first encodes the video and audio information into a modulated signal, typically using techniques like amplitude modulation (AM) or frequency modulation (FM). This modulated signal is then amplified and transmitted through an antenna, which radiates the waves over a specific coverage area. Receivers, such as televisions, capture these waves and decode the signals back into audio and video for viewing.
What are optical fibers made of?
Good optical fiber is made of glass, but inexpensive fiber is sometimes made of plastic.
(a) what is the total capacitance of this arrangement (B) the charge stored on each capacitor (C) the voltage across the 50 micro farad capacitor and the energy stored in it. 20v and 20+30+50 micro farad
The relationship between resistance and conductors is?
ALL resistance are conductors. just the magnitude value changes
When a larger voltage is applied to a conductor does the current increase or decrease?
If you increase the voltage applied to a conductor, the current increases.
That is, unless you are talking about stepping up the voltage with a transformer with the intent of distributing it over a long distance to a remote transformer, at which point you would step it back down. In this case, the current would decrease. The above answer to the original question remains valid, however, due to lack of information.
How much current was in the circuit?
I'm sure I can answer this if given more details, what circuit? current is determined by voltage and impedence(resistance) in a purely resistive circuit it is pretty basic, in alternating voltage circuits the impedence is dependent on the frequency of the voltage/current. inductors and capacitors are designed into a/c circuits to force the load to behave like a resistive circuit which boils down to how much voltage divided by how much resistance you have, 120 volts divided by 10 ohms equals 12 amps. in a parallel circuit it works pretty much the same way voltage placed on the resistor divided by its resistance equals the current flowing through that leg. more details please.
How do you calculate Signal to Noise ratio?
It can be calculated by simplifying the ratio between power of signal by power of noise
An analogor analogue signal is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity, i.e., analogous to another time varying signal. It differs from a digital signal in terms of small fluctuations in the signal which are meaningful. Analog is usually thought of in an electrical context; however, mechanical, pneumatic,hydraulic, and other systems may also convey analog signals.
source: wikipedia
What is the SP pointing register's default memory segment?
The default segment for SP (Stack Pointer) relative memory accesses in the 8086/8088 is SS (Stack Segment).
What is the difference between discrete fourier transform and fast fourier transform?
discrete fourier transformer uses digital signals whereas the fast fourier transform uses both analog and digital.
How does ignition coil transform low voltage to high voltage?
A: The coil is really a transformer. The 12 enter the coils and charges with current as the point opens up this charge is released as energy about 100 mw. This release is transformed to hi voltage at the secondary by a primary to secondary turn ratio like 1:3333 more or less. Since the primary is open the same ratio will feed the primary that is why we see ringing and the point have capacitor to protect from false firing.
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The coil is a transformer, but we know that DC will not work with a transformer. A supply of 12 volts DC is applied to the coil's primary winding. In series with this coil is a set of breaker points. These points are used to interrupt the 12 volt supply from the coil. When the 12 volt supply is interrupted, the magnetic field around the primary winding collapses. This collapsing field induces a voltage into the secondary coil of the transformer. The secondary coil has many more turns that the primary coil and the voltage induced will be in the 10,000 to 15,000 volt range. This high voltage is needed to make the voltage jump across the air gap in the spark plug.
The 208 volt configuration is one phase of a three phase source at 240 volts, where the 208 volt circuit is connected between the center tap of one 240 volt phase (usually a grounded neutral, in the style of a standard 120/240 split phase system) and the high delta connection on either of the other two phases.
208 circuit would consist of two phases of a 208 volt wye system or could be all three phases. The voltage between conductors would be 208 volts. The voltage to ground from any phase would be 120 volts. A 240 volt delta system would give you a high leg to ground, somewhere around 190 volts and the other two would be 120 volts to ground.
The law of induction says voltage = N d/dt (flux) which for a fixed single frequency AC becomes: voltage (rms) = 2 pi x freq x N x flux (rms), or
volts per turn = 2 pi x freq x flux.
Therefore with 50 Hz and 0.06 Webers of flux the volts per turn is 2 pi x 50 x 0.06 which is 18.85 volts per turn.
The HV winding need 318 turns while the LV winding needs 13 turns.
With a typical peak flux density of 0.7 Wb/m2 rms the cross section area of the iron core would be 0.086 sq. metres or just under 1 ft-square.
What will be the output of differentiator if the input is sine wave?
a phase shifted sine wave of a different amplitude.
What do the first 3 bands on a resistor indicate?
The first 3 band on a resistor indicate the value of that resistor.
