0
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
How do you get your account number for boost mobile?
You have to call customer service:
Business hours:
Mon-Fri: 4am - 8pm PST
Sat & Sun: 4am - 7pm PST
General Support:
1-866-402-7366
A capacitor stores electrical charge. When the device is shut off, the charge will - over time - slowly bleed off. But immediately after shutdown, the charge is still present in the capacitor. In large capacitors, such as those found in air conditioning units, older style televisions, and microwave ovens, the stored charge can be strong enough to be potentially lethal. Service technicians have safe procedures for bleeding off the capacitor charge, but those not knowledgeable about electrical systems should not touch a chassis of above-mentioned items, even if shut off and unplugged. Stickers that say "Danger - High Voltage" mean exactly what they say.
Another Answer
A capacitor does NOT store charge; it stores energy.
The net charge on the plates of a capacitor is no different whether it is 'fully charged' or 'fully discharged'. It does not take charge from the supply and store it on its plates! It simply allows electrons from one plate to be transferred to the other, so there is no change in the overall amount of charge.
What it does do is to store energy, expressed in joules.
Not really, unless you have a capacitor start type of motor. Capacitors can be very hazardous if improperly connected to mains power and I wouldn't suggest your trying it if you're not experienced or qualified. Best bet is just to get a heavier swicth or use a heavy duty switching relay.
What is the Baud rate for 1024QAM?
It is impossible to answer that question.
On the other hand if you assume this:
- Baud rate = symbol rate
- Bit rate = bits per second
The following formula is valid:
Baud rate = bit rate / 10
If 1024 QAM is used.
Due to a phenomenon called electromagnetic induction, this could ionfact be possible. All it would take is a simple set up to enable the metal to cut through the flux lines of the field rapidly (a simple up and down motion of a metal beteen two north south magnets would do) and an electric charge would be induced in the metal. This charge can easily be dis-charged and thus used to shock someone if it was large enough, so YES; electromagnetic fields or magnetic fields CAN be used to electrically charge metal objects in a home as a harassment tactic.
However, the charge from a simple magnet is to minimal to cause any harm.
What is the output of an RC circuit when the input is a pulse step n square wave?
I think nobody is answering because clarification is needed about what is meant by "a pulse step n square wave"?
ANSWER: If the capacitor is in series and it has a poll up to X volts with a resistor a positive transition on the input will be immediate on the output and return to its previous state by the RC time constant. If the resistor is in series and has a pull up capacitor to X volts then the capacitor will charge at the RC time constant. The response is only evident during transition times not during steady states
The current gain in CE mode called as beta (ß)
Tha current gain in CB mode called as alpha (A)
ß= A/(1-A)
=0.98/(1-0.98)
=49
the current gain is 49 in CE mode
The only way to stop a 4 layers diode that is conducting is by?
To cause a Shockley diode to stop conducting, reduce the current going through it to a level below its low-current dropoutthreshold.
What type of wave is square wave?
- A square wave is the sum of all odd harmonics of the fundamental frequency.
- A sawtooth or ramp wave is the sum of all even harmonics of the fundamental frequency.
What are materials which are suitable for electronic devices?
there are several type of electronics devices and several type of material used for these devices but material which is used for device should able to full fill the requirement of that device.
for instance
rectifier diode - Silicon
Photo Diode - Germanium
High Frequency devices - GaAs, InGaAs, GaP etc.
Every material has it's own configuration so conclusion is that any one semiconductor material can not used as universal material for all semiconductor devices.
Who is more efficient dc motor or ac motor and why?
DC motors are generally more efficient than AC motors. DC motors have a lower amount of inertial associated with them, making them more efficient to run.
What is the difference between AC and DC average rms and peak values?
RMS minus ripple current , that is alternating current (sinusoidal wave form )it is including ripple voltage and ripple current . peak current is maximum peak in sinusoidal wave form . general used in choke (filter ) design calculation .
AnswerHow do you compare the 'speed' of a circular saw with that of a reciprocating saw? One spins, while the other goes up and down. The answer is that you compare them, not in terms of their individual speeds, but in terms of their 'cutting speeds' (i.e. how fast they cut board).
We do the same thing with a.c. and d.c. We compare one with the other in terms of the 'work' they do. So, for example, a 10-A (r.m.s.) a.c current will do precisely the same amount of work as a 10-A d.c. current.
So the r.m.s. value of an a.c. current is exactly equivalent to the value of a d.c. current that will achieve the same amount of work. Because voltage is proportional to current, the r.m.s. value of an a.c. voltage and a d.c. voltage are also equivalent to each other.
For a sinusoidal a.c. current or voltage, the r.m.s. value is 0.707 times the peak value.
Where can a transistor be found?
Seriously? In just about anything electronic, in one form or another.
How do ions in metal wires resist the flow of electrons?
dunno its a mystery lad go brush ya teeth lol x
What device used to increase or decrease DC voltage?
A DC-to-DC converter is the general term for a device that changes DC voltage at one level to another.
What is meant by electronics and communication?
electronics & communication means receving and sending information through signals
that would be good for the cold idle and should drop three times as the car warms up and should idle about 650 to 800 auto trans
How do you charge a capacitor?
You charge a capacitor by placing DC voltage across its terminal leads. Make sure when using a polarized capacitor to place positive voltage across the positive lead (the longer lead) and negative voltage across the negative lead.
Also make sure that the voltage you charge the capacitor to doesn't exceeds its voltage rating.
How do you repair a 680 microfarad capacitor?
To repair a 680 microfarad capacitor, buy a new one and install it in place of the old one. It is unrealistic to attempt repair of a capacitor.
Do 2 input nor gates form a complete set of logic gates?
nor as well as nand gate
are universal gates they both can be used
as a complete set of logic gates
