No you can't use DC capacitors in Ac because in DC current , the current flows directly while in AC current, the current flows curved zig-zag. Thus Dc equipment can't mingle with AC as they need Direct flow. So DC capacitors can't be used for AC current...................
AnswerMost capacitors will operate on either DC or AC. The exception is the polarised-type capacitor, which is designed to operate with a DC or an appropriately-biased supply.
Often, a capacitor's rated voltages is specified in terms of DC -for example, '100 V (DC)', so care must be exercised if it is to be used with AC. This is because we always measure AC voltages as root-mean-square (rms) values, not as peak values. For example, '100 V (AC)' actually peaks at 141 V*. So, applying 100 V (AC) to a capacitor rated at 100 V (DC) may cause its dielectric to fail. In this example, the maximum allowable AC voltage must be 70.7 V, which peaks at 100 V.
(*To explain: Vrms = 0.707 Vmax )
You can block AC current by using a filter with a pass-band that is outside the frequency of the AC current.
Block DC components and pass AC component
capacitors allow ac current to flow.
capacitor simply increase current by the rating value of the capaccitor by charging it up and realeasing the stored charges in a c
It allows AC current to go through, but blocks DC current.
In electronic circuits a capacitor is used to pass AC and block DC.
A capacitor can store both alternating current (AC) and direct current (DC). However, in an AC circuit, a capacitor blocks the flow of steady-state current because it takes time to charge and discharge, causing a phase shift in the current. In contrast, in a DC circuit, a capacitor can store charge and act as a temporary energy storage device.
is it ? are you sure ? but i know so many circuit where capacitor is connected with ac supply . still , if u connected a capacitor to dc supply , then : 1. if it is in SERIES with the dc supply , it will block all the dc current as capacitor provides infinite resistance to dc current . application : where u want to block dc current.(simple high pass filter) 2. if it is in PARALLEL with the dc supply , it will not block dc current , but if any ac current comes out from the supply , the ac current will go through the capacitor , as capacitor provides small resistance to ac current. application : a) where u want to block ac current.(simple low pass filter) b) to filter the noise (ac components) of dc supply.
AC current can flow through a capacitor, it's DC current that can't
In an electronic circuit a capacitor can be used to block direct current. In general a capacitor stores electric charge. The charge in a capacitor is the voltage times the capacitance and that is also equal to the charging current times the time (all quantities in SI units - seconds, volts, amps, coulombs, farads)
simple capacitor can do this job (to block dc and pass ac).
You can block AC current by using a filter with a pass-band that is outside the frequency of the AC current.
Capacitor does not allow any current through it.By the changing of electric field across the plates it is usually assumed that capacitor allow ac through it.Is it???
Block DC components and pass AC component
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.
capacitors allow ac current to flow.
AC can pass through a capacitor. The higher the frequency of AC the lower the reactance (like resistance). The current and applied voltage are 90 degrees out of phase the current leading the voltage by this amount.