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A capacitor blocks DC but allows AC.

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15y ago

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The electric device which blocks DC but allows AC is called?

A capacitor is a device which blocks DC, but allows AC. When a capacitor is completely charged it does not allow current to pass through it. Initially when capacitor starts charging it has maximum current which flows and voltage is minimum, during charging current decreases with time and voltage increases. When capacitor is completely charged, it has maximum voltage and minimum current. However the AC has both positive and negative half cycles, during positive half cycle capacitor starts charging but during negative half cycle it discharges, and hence it doesn't get fully charged at AC, and current always flows through it.


What is the use of coupling capacitor?

It allows AC current to go through, but blocks DC current.


How can a normal person understands a embedded programming?

Simply how capacitor blocks dc and allows ac after charging?


Device that converts energy of motion into an electrical energy?

An electrical generator, these can produce AC or DC electric current.


What is the definition of AC generator?

An electric device that produces an electric current that reverses direction many times per second. Also called a synchronous generator.


What device permits electrical energy to be transferred from one AC to another without direct connection between them?

An electric transformer is the device that allows electrical energy to be transferred between two AC circuits without a direct electrical connection. This is achieved through electromagnetic induction, where changing currents in one coil induce a voltage in another coil.


A device which changes ac to DC is known as?

a device which changes ac to dc is known as 'conevrter' a device which changes dc to ac is known as 'inverter'


Which electric shaver runs on a battery and an electrical cord?

Panasonic and Phillips manufacturer electric shavers (with oscillating or rotating blades) that operate on AC or batteries. However, most electric shavers come with a DC powered device.


Why capacitor used in a DC inverter?

capacitor is component used to store and release the electric charge.and also it has feature to block the dc but bypass ac.and inverter is device which converts ac to dc and then again ac


What is AC motor and DC motor?

AC stands for alternating current, and DC is direct current. A motor is a device that uses electrical energy to spin. An AC motor uses AC voltage, and a DC motor uses DC voltage. http://ezinearticles.com/?The-Difference-Between-AC-and-DC-Electric-Motors&id=193767


What is the function of an AC power switch and how does it contribute to the operation of electronic devices?

The function of an AC power switch is to control the flow of electricity to an electronic device. It allows the user to turn the device on or off. By using the power switch, the user can easily start or stop the operation of the electronic device, helping to conserve energy and prevent damage from power surges.


Does a photovoltaic cell produces AC electric current?

The panel itself produces DC and if it is connected to mains electricity it needs a separate converter to change the current to AC.