Guest G_S Posted February 7, 2014 Report Share Posted February 7, 2014 Hello. I am a beginner in t electronics, and have a very basic question: what are capacitors for? I mean, besides acting as batteries, what is the point of having them in a circuit? Do they save battery power? I have read several tutorial bbut all I can see is that people use them to keep the circuit alive while the batteries are removed. What is the practical usefulness of this? Quote Link to comment Share on other sites More sharing options...
audioguru Posted February 7, 2014 Report Share Posted February 7, 2014 A battery voltage remains fairly high as it is used. A capacitor voltage drops quickly at the beginning of powering something then drops less later. So a capacitor cannot be used as a battery unless the current is extremely low.A resistor feeding a capacitor is a filter and it produces a phase shift. The phase shift produced by a capacitor is the opposite to the phase shift produced by an inductor and together they resonate. Quote Link to comment Share on other sites More sharing options...
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