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A capacitor that is used to filter out a certain frequency otherwise series of frequencies from an electronic circuit is known as the filter capacitor. Generally, a capacitor filters out the signals which have a low frequency. The frequency value of these signals is near to 0Hz, these are also known as DC signals.
Generally, a capacitor filters out the signals which have a low frequency. The frequency value of these signals is near to 0Hz, these are also known as DC signals. So this capacitor is used to filter unwanted frequencies.
A capacitor is used to filter out the DC signal. This can be done by connecting the capacitor in series in the circuit. The following circuit is the capacitive high-pass filter. In this, signals like DC or low frequency will be blocked.
Once the rectifier reaches the positive half cycle, then the diode acquires forward biased & allows the flow of current to make the capacitor charge again. The capacitor filter through a huge discharge will generate an extremely smooth DC voltage. Therefore, a smooth DC voltage can be attained with this filter.
Switched-capacitor filters are clocked, sampled-data sys-tems; the input signal is sampled at a high rate and is pro-cessed on a discrete-time, rather than continuous, basis. This is a fundamental difference between switched-capacitor fil-ters and conventional active and passive filters, which are also referred to as “continuous time” filters.
The capacitor filter through a huge discharge will generate an extremely smooth DC voltage. Therefore, a smooth DC voltage can be attained with this filter. The main function of full wave rectifier is to convert an AC into DC.
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