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The cutoff frequency of filter depends upon the value of capacitor and resistance. Therefore, below cutoff frequency or above this frequency, capacitor allow to pass all other frequencies.
Llewellyn Wolf
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When a capacitor acts as a better filter?
When it is connected to resistor
Why you use capacitor as a filter in power supply?
capacitor acts as a small battery ,during rectification ac to dc it gets some blank space (no current) to fill this current from capacitor is used.
What happens when a capacitor reaches a steady state?
when a capacitor reaches it, it acts as a battery
What is the advantage of capacitor filter over inductor filter?
An inductive filter is in fact an LC circuit in which an inductor is connected in series with the capacitor. This arrangement is also known as a low-pass filter. http://www.answers.com/topic/inductive-filter
Output voltage of half wave rectifier without capacitor filter is less or more than rectifier with capacitor filter?
less
What is the difference between with capacitor rectifier and without capacitor rectifier?
To know the difference between capacitor and non capacitor rectifiers one must study what is the function of filter part.the filter part consists of capacitors or inductors or combination of both. the output of a simple diode rectifier is pulsating dc which means it consists of both dc part and ac part. filters are used to remove the ac part from such an output. capacitor filter means that a capacitor is used for filtering out the ac part. non capacitor or inductor filter means that an inductor is used for filtering out the ac part. There is another type called pii filter where both inductor and capacitor are used. Pii filter is the best kind of filter available
What are the advantages and disadvantages of pi section filter over a shunt capacitor filter?
1.More output voltage compared to shunt capacitor filter. 2.Less No of ripples. 1.Higher cost relative to shunt capacitor filter. 2.Larger in size.
What effect does the series resistance of a capacitor used in a capacitor filter have on diode current and ripple voltage compared with an ideal capacitor of no resistance?
The effective resistance of the capacitor reduces the ripple current through the capacitor making it less effective in its function of smoothing the voltage. But if the capacitor filter is fed by a transformer and diodes, the resistance of the transformer exceeds that of the capacitor.
How capacitor act like resistor?
capacitor acts as resistor because it has some resistace alos.
What is a filter capacitor?
Capacitor has many applications in electronics circuits, one of its application is in FILTERS. Mainly two types of Filters are formed with the help of capacitor namely, i)Low Pass Filter(LPF) ii)High Pass Filter(HPF) Impedance of capacitor is inversely propotional to the frequency, therefore a capacitor in series with resistor will act as Low Pass Filter. since all the high frequency are passed to ground.
What is the difference between an inductive low pass filter and a capacitive low pass filter?
Where you are measuring. A simple filter will be two elements - a capacitor or inductor and a resistor. A capacitor will tend to "trap" low frequencies. In the case of a lowpass filter made of a capacitor and resistor, the output voltage will be measured across the capacitor. Inductors are the opposite, so the output would be across the resistor.
Can a radial capacitor react different than an axial capacitor when being used as a filter for EMF?
Yes. The inductance of a radial capacitor can be different than an axial capacitor, particularly at RF, so the reaction as a filter for EMF could well be different.
