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You can block AC current by using a filter with a pass-band that is outside the frequency of the AC current.
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∙ 14y ago
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An inductor is said to block ac but in transformer which is two inductors coupled together how can it allow an ac current?
While it is true that an inductor opposes the flow of an alternating current, it does not necessarily 'block it'. The quantity that opposes the flow of an AC current is the inductor's inductive reactance, expressed in ohms. Inductive reactance is proportional to the frequency of the supply voltage and, at 50 or 60 Hz, the reactance of a transformer's winding is relatively low (although very much higher than its resistance) and, while this acts to limit the amount of current flow, it certainly doesn't act to block that flow.
Why inductor block ac and pass dc?
When your circuit starts up, your inductor creates an electrical current in the opposite direction. With dc, this effect vanished after the circuit is started. With ac, the current keeps starting and stopping so the inductor keeps creating a current in the opposite direction.
What device converts dc current to ac current?
A "Rectifier" converts AC current to pulsating DC current.
What current flows in one direction then the opposite direction?
AC, Alternating Current.
What is the sign for ac and DC current?
AC means alternating current DC means direct current there is no polarity reversal
Does a dictator block ac current dc current or both?
Never heard of a dictator in the electrical trade. Well, I shouldn't say that, there was one journeyman when I was an apprentice.
An inductor is said to block ac but in transformer which is two inductors coupled together how can it allow an ac current?
While it is true that an inductor opposes the flow of an alternating current, it does not necessarily 'block it'. The quantity that opposes the flow of an AC current is the inductor's inductive reactance, expressed in ohms. Inductive reactance is proportional to the frequency of the supply voltage and, at 50 or 60 Hz, the reactance of a transformer's winding is relatively low (although very much higher than its resistance) and, while this acts to limit the amount of current flow, it certainly doesn't act to block that flow.
What is the function of mylar capacitor?
In electronic circuits a capacitor is used to pass AC and block DC.
Can a diode work in ac?
A diode is a "one-way valve" that allows electrical current to flow in only one direction. A diode placed in series between an AC voltage source and a resistive load will allow current to flow through the load in one direction and block the current when the polarity of the AC voltage changes.
Why inductor block ac and pass dc?
When your circuit starts up, your inductor creates an electrical current in the opposite direction. With dc, this effect vanished after the circuit is started. With ac, the current keeps starting and stopping so the inductor keeps creating a current in the opposite direction.
Does a fan run on a dc current or ac current?
AC
What device converts dc current to ac current?
A "Rectifier" converts AC current to pulsating DC current.
Why does an inductor block AC but allow DC?
While it is true that an inductor opposes the flow of an alternating current, it does not necessarily 'block it'. The quantity that opposes the flow of an AC current is the inductor's inductive reactance, expressed in ohms. Inductive reactance is proportional to the frequency of the supply voltage and, at 50 or 60 Hz, the reactance of a transformer's winding is relatively low (although very much higher than its resistance) and, while this acts to limit the amount of current flow, it certainly doesn't act to block that flow.
Did ceiling fan operate on dc or ac current?
ac current
What current is produced in ocean thermal energy conversion dc current or ac current?
ac
Why is it incorrect to say AC current?
ac stands for alternating current so ac current means alterneting current current. its like entering your pin number on an ATM machine.
What devices can be used to block DC and pass AC?
simple capacitor can do this job (to block dc and pass ac).
