2006-12-23 18:32:16 · 7 answers · asked by parimal s 1 in Science & Mathematics ➔ Engineering
A capacitor blocks DC, and is a high pass filter.
An inductor (coil) passes DC and is a low pass filter.
So If you have a coil to the load, yes in some situations a capacitor to grnd in a power supply to filter noise and ripple, gives some of the same benefits.
However if you have a cap. high pass to load, do not use a coil to grnd; it messes up the DC part.
2006-12-23 18:46:42 · answer #1 · answered by Rockies VM 6 · 1⤊ 0⤋
Choke Coil
2016-10-03 07:36:52 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Assuming that you want to use a capacitor as a resistor (to avoid heat & power loss) in series with a load on AC supply, it is quite possible.
The idea is to offer the same reactance (AC resistance) value, whether you use a capacitor or an inductor. (Cost and size factor not considered in this case)
One important factor is that the frequency has to be kept constant since the reactance value is totally dependent on the frequency used and should not be changed.
You can derive the value of the inductive reactance offered by the choke by the formula XL = 2 Pi f L where Pi is 22/7, f is the frequency in Hz and L is the inductance in Henries.
Once you get the reactance value, calculate the capacitance value.
The capacitance value can be calculated by the formula C = 1 / (Xc 2 Pi f) where Xc is the reactance in Ohms, Pi is a constant 22/7, f is the frequency in Hertz and C the capacitance in Farads..
2006-12-24 18:30:10 · answer #3 · answered by kkonline 3 · 0⤊ 0⤋
This is too general a question, more needs to be known about the specific application. Both components are energy storage devices. The capacitor stores electrostatic energy (like static shocks) and the choke coil (inductor) stores electromagnetic energy (like passing a magnet through a coil of wire).
2006-12-23 18:57:08 · answer #4 · answered by William K 2 · 0⤊ 0⤋
With a cap, current phase leads voltage. With a coil, current lags voltage. Direct substitution, no.
However, in some circuits, it is possible to redesign to perform similar function.
2006-12-24 03:56:18 · answer #5 · answered by Anonymous · 1⤊ 0⤋
No.
They couldn't be more different.
In short, and without the math, chokes block high frequency and pass low frequencies and capacitors pass high frequency and block low frequencies.
Complete opposites!
2006-12-23 18:50:14 · answer #6 · answered by LeAnne 7 · 0⤊ 0⤋
yes you can simulate coils with gyrator circuit (with OP-AMP)
2006-12-23 20:50:52 · answer #7 · answered by Shahram S 1 · 0⤊ 0⤋