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infact what happens in practical capacitor action that air in between parallel plates of that capacitor it acts as a dielectric medium and leakage current starts flowing, that leakage curent is then being bypassed through a conductance in parallel with the capacitor.But in the ideal case that leakage current can't flow due to infinite resistance which can not be provided practically.
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∙ 15y ago
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Which filter is practically preferred to get pure DC output?
pi filter is best using inductor and capacitor.
What happened when capacitor is infinite?
it works as a short ckt
Does the flux capacitor really work?
No, it only works "in the movies".
What is insulation resistance in capacitor?
ideally there will not be any resistance to the capacitor,so at this condition it should not not discharge the stored energy. but practically small resistance will be there in the capacitor so the energy stored by the capacitor will be discharged through resistance.
Can you replace 47n polyester capacitor with a 47n polarised?
Last time I looked there are no 47nF polarized capacitors. The value is too small to make practically.
How capacitor works with ac supply?
Ti controls the capacity of power our machines use
What happens when dielectric is a conductor?
Yes possible. As a capacitor even with air as dielectric allows alternating current to pass through the capacitor filled with some material as dielectric would allow current to pass through it
How Capacitor Banks works in Electrical System?
Capacitors used in delta connections so that they increase the power factor
A 10 microfard capacitor is charged through a 10 ohm resistor. How long will it take for the capacitor t fully charge?
If a 10 microfarad capacitor is charged through a 10 ohm resistor, it will theoretically never reach full charge. Practically, however, it can be considered fully charged after 5 time constants. One time constant is farads times ohms, so the time constant for a 10 microfarad capacitor and a 10 ohm resistor is 100 microseconds. Full charge will be about 500 microseconds.
Which type of bypass capacitor works best at high frequencies A electrolytic B mica C ceramic D plexiglass?
Plexiglass
What happens when you apply DC directly to a capacitor?
When you apply DC directly to a capacitor, it charges to the value of the DC potential, and then there is (nearly1) zero current flow through the capacitor. If the capacitance is large enough, though, and the DC source has a low enough impedance, the current flow can be quite substantial, damaging things.The reason the equilibrium current is zero is that a capacitor resists a change in voltage, proportional to current and inversely proportional to capacitance...dv/dt = i/c... which makes the capacitor essentially a high pass filter, and a DC blocker.1 The equilibrium current is "nearly" zero because, in our non-ideal world, every capacitor has some leakage current. Practically, the current is zero - from a purist perspective, it is not.
What is calcium copper titanate?
It is a hell of a material, that works wonders in Capacitors, falls under dielectric materials(see bottom of the list). If you stick it in a capacitor, the capacitor will hold almost a quarter of a MILLION times more energy. Sweet huh?
