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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
Damping in circuit theory refers to the reduction of oscillations or fluctuations in an electrical circuit, typically due to the presence of resistive elements. It can affect the transient response of circuits, such as in RLC (resistor-inductor-capacitor) circuits, where damping determines whether the response is underdamped, critically damped, or overdamped. This behavior influences how quickly a circuit settles to its steady state after a disturbance, impacting applications like signal processing and control systems. Damping is crucial for ensuring stability and performance in various electronic designs.
An analog address is a reference point used in analog systems to identify specific locations or values within a continuous range, such as voltage levels or physical positions. Unlike digital addresses, which represent discrete values, analog addresses can vary smoothly and can represent an infinite number of states. They are commonly used in applications like analog signal processing, where signals vary continuously over time.
What is vhf wideband amplifer?
"wide band amplifiers are those amplifiers which amplify ah a higher band width or in short the frequency range is very wide.. by VHF indicates Very High Freaquency- denotes hiher ranges of freaquency 30MHZ to 300 MHZ these amplifiers are working on these reagions so as we need amplifiers of these range normally the internal capacitace of high freaquency switching will affect the freaquency due to internal juction capacitance(MILLER CAPACITANCE)will attenuate the freaquency so much. to avoid this problem we have to use the high freaquency transistors. normally BFW195 are used for small range of aplications commonly" WITH LOVE MADHAV "MADHAVNAMBIARCK@YMAIL.COM"
When is the Op amp said to be working in its linear range?
it is when the feed back resistance is been connected between the inverting input
and the out put
For 10V electrolytic capacitor how much peak to peak voltage signal can be applied?
Make sure you're using a non polarized electrolytic capacitor, otherwise it isn't going to work well.
I'm not sure, but I would say you should be able to apply the same RMS AC as it is rated for DC:
AC Peak - Peak = RMS AC / (2*sqrt(2))
How can input impedance is made purely capacitive or inductive or zero or infinite?
By using a matching network, or filter (active or passive).
What does am frequency stand for?
AM stands for Amplitude Modulation. In theory, amplitude modulation could be applied to a radio signal on any frequency but the AM band on most domestic radios stretches from 530 to 1700KHz.
What is difference between digital and IP phone?
IP phones with color liquid crystal display (LCD), including dynamic soft keys for call features and functions.It is capable to customize XML-based services to let users access a variety of information, such as stock quotes, employee directories, and web content.Digital phones is simply VoIP or Voice over IP. This specifically refers to the service where your voice, over either a PC or telephone, is transmitted digitally over the internet and is able to break into a phone company's telecom service.
To find the resistance in a circuit, use the equation R = V/I, where R is the resistence in ohms, V is the voltage, and I is the current in amps. Therefore, your equation is R = 120/0.6. Therefore, the resistance is 200 ohms.
Hope this helps
What is the effect of frequency on calibration of thermocouple?
the frequecy effect arises because of various factors such as:
1. Skin effect.
2. non uniform distribution of current along the heater wires.
3. spurious capative currents.
The transmit frequency is 140.250 MHz what is the best choice for the receive frequency?
Try 140.250Mhz. There should not be any shift from sent to received.
What is the net charge on a n-type or a p-type substance?
There is no net charge on either substance. However, an N type substrate contains atoms (such as arsenic or phosphorous) trapped in its lattice that have an electron (called a donor electron) in the outer (valence) band of electrons, which can be easily removed by a relatively weak electromotive force (voltage). A P type substrate, although electrically neutral, contains an element (such as boron) which has one fewer electrons in its valence band that it would like to have, making it an acceptor. The missing electron is often called a "hole". To elaborate slightly, bands of electrons like to have a certain number of electrons to be "stable". A donor atom may have one, or perhaps five, electrons in its valence band, while an acceptor might have three or seven. Both would be happier with zero or four or eight. When an N and a P type substance are in contact, a negative voltage on the N material with respect to the P material will allow electrons to move from the donor material to the vacant holes in the acceptor. If the voltage is applied in reverse, the negative charge on the P material attracts the holes away from the junction, and the (relatively) positive charge on the N material attracts electrons away from the junction, and very little current flows.
How many volts can a landline telephone handle without blowing?
Since the ringer voltage across the twisted pair is 120 VAC RMS the telephone can definitely handle that. Given the fact that the telephone is also supposed to survive induced surges from nearby lightning strikes to the line the telephone should be able to handle over 1000 V common mode impulses (but I don't know the exact limit). No telephone is expected to survive a direct lightning strike to the line (which could be millions of volts).
Note: common mode means the voltage is applied between the twisted pair lines (both at about the same voltage) and ground. If the survivable common mode voltage were to be applied across the twisted pair instead it would severely damage the telephone.
Name three of the best conductive materials.?
Leaving aside superconductors: graphene, silver, copper.
---- The D flip-flop tracks the input, making transitions with match those of the input D. The D stands for "data"; this flip-flop stores the value that is on the data line. It can be thought of as a basic memory cell. A D flip-flop can be made from a set/reset flip-flop by tying the set to the reset through an inverter. The result may be clocked. ----
What is the purpose of delay line in cro?
the delay line is used to delay the incoming signal vertical information and synchorized it with the horizontal
Can I connect two 4 ohm speakers and a 8 ohm speaker?
I depends on "how" you are connecting them. If you connected the 4 ohm speakers in series (positive terminal of one to the negative terminal of the other). This will leave a negative terminal of one unconnected and a positive terminal of the other unconnected. then connect them in parallel (the unconnected positive terminal of the 4 ohm speakers to the positive terminal of the 8 ohm speaker and the unconnected negative terminal of the other 4 ohm speaker to the negative terminal of the 8 ohm speaker. This will produce an overall 4 ohm load for 1 channel (assuming you are connecting to a stereo)
Or if you are connecting to a stereo with two 8 ohm outputs. Connect the 8 ohm to one channel then connect the above mentioned series connected 4 ohm speakers to the other channel for a total load of 8 ohms on both channels.
Parallel connections will equal less than the individual speaker load. The formula for this is: R X R/R + R where R is ohms for each speaker ie. Two 8 ohm speakers in parallel would be 8 x 8 (64)/ 8 + 8 (16) which is 4 ohms.
Series connections you just add them together ie. Two 8 ohm speakers in series would be 8 + 8 or 16 ohms.
FYI. If you measure the speakers with an ohmmeter it will be less than what it says on the speakers.
Speakers are measured in "impedance" which takes into account "reactance". The resistance of the speaker coil will change slightly with different frequencies applied so an 8 ohm speaker may read as 5-7 ohms (more or less) with an ohmmeter. A 4 ohm may read as low as 2.5 ohms on the same meter.
Some output transformers can handle half the ohms but it is always safer, as a general rule, to go "up" in speaker impedance without any damage. It's not wise to vary any with a system with solid state (transistor or IC) output coupling.
Hope I didn't get too technical. There is lots of good info on the internet about speaker configurations.
What is US voltage and Ecuador voltage?
US Voltage is 120 V @ 60 Hz.
Ecuador Voltage is 120 V @ 60 Hz.
They're compatible, the plugs are also the same.
Relationship between field current speed and induced voltage in excited dc generator?
The equation is
Ea = PNw(phi)/(pi) (see formated at http://www.sitmo.com/gg/latex/latex2png.2.php?z=100&eq=E_a%3D\frac{PNw\phi}{\pi})
where Ea is the induced voltage, P the number of poles of the machine, w the electric frequency in rad/s, (phi) the magnetic flux.
referecen:
A. E. Fitzgerald et. al. Electric Machinery, 6th edition. McGraw-Hill.
No, there's no such thing as "digital energy". The calculator simply uses electrical energy. However, electronic equipment that are plugged into the electrical outlet (including calculators, radio receivers, computers, and many more) need special adapters to adapt the electrical current as follows:
1. The voltage from the outlet, 110 or 220 volt, is way too high. Electronic equipment usually needs voltages somewhere around 3-12 volts. A simple transformer would do, but:
2. The voltage for electronic appliances has to be DC. Since the electricity from the outlet is AC, that has to be converted too.
No, there's no such thing as "digital energy". The calculator simply uses electrical energy. However, electronic equipment that are plugged into the electrical outlet (including calculators, radio receivers, computers, and many more) need special adapters to adapt the electrical current as follows:
1. The voltage from the outlet, 110 or 220 volt, is way too high. Electronic equipment usually needs voltages somewhere around 3-12 volts. A simple transformer would do, but:
2. The voltage for electronic appliances has to be DC. Since the electricity from the outlet is AC, that has to be converted too.
No, there's no such thing as "digital energy". The calculator simply uses electrical energy. However, electronic equipment that are plugged into the electrical outlet (including calculators, radio receivers, computers, and many more) need special adapters to adapt the electrical current as follows:
1. The voltage from the outlet, 110 or 220 volt, is way too high. Electronic equipment usually needs voltages somewhere around 3-12 volts. A simple transformer would do, but:
2. The voltage for electronic appliances has to be DC. Since the electricity from the outlet is AC, that has to be converted too.
No, there's no such thing as "digital energy". The calculator simply uses electrical energy. However, electronic equipment that are plugged into the electrical outlet (including calculators, radio receivers, computers, and many more) need special adapters to adapt the electrical current as follows:
1. The voltage from the outlet, 110 or 220 volt, is way too high. Electronic equipment usually needs voltages somewhere around 3-12 volts. A simple transformer would do, but:
2. The voltage for electronic appliances has to be DC. Since the electricity from the outlet is AC, that has to be converted too.
Circuit of soft switching technique using zvzct in buck converter?
yes, zvzct is used to reduce the power dissipation and improve the efficiency of the circuit
How can you make a LED light up on only one 1.2 volt battery?
A: WELL you cannot not with 1,2v most LED start emitting at 1.8 v some as high as 5 volts . two need at least two 1.2 volts better is 9 volts then there is a problem voltage wise but the problem is now that you need a limiting resistor to ensure at least 10ma of current
