Most of the people on my ignore list are the ones who constantly ask vague questions or refuse to help us help them.

Yeah. Those are the, "20 questions" posts where we try to drag the necessary information out of the Original Poster.
Not answering the questions gets an immediate Ignore from me.

 

Off the top of my head there are at least six or more reasons to use a capacitor.

Let's take them one at a time.

#1 - Capacitors hold charge.

Think of a capacitor like a big tank of water. You can take a little bit of water from the tank without drastically changing the level of the water.

Same with a capacitor. You can take charge from the capacitor without drastically changing the voltage on the capacitor.

 

All components have their place in a circuit design based mainly on what they do. So it becomes necessary to learn what components do and how they do what they do. Capacitors oppose a voltage change, Inductors oppose a current change, Resistors oppose current flow and the list goes on and on. Before thinking much about capacitors it may be best to start with the basics and the basic formulas and then move along to other components. For example start with resistors and once you understand them move along. Anyway, learn what each component does and then understand what they do in a circuit and how they react or interface with other components.

Ron

 

Far from wanting to not help. I will go out of my way to provide a new perspective or dig up a segment of text to clear up a confusion on topic. I do not see the use of vague, overly broad questions about very basic generic terms.

Which would get me a better answer

Why do companies use steel to build machines?

Why are some types of steel used for building all manner and size of machines but others are only used for special purposes?

One could go on forever about all the reasons in the first question and never be sure they are answering the question the poster wants to know about. In the other question, a specific detail is asked for and any answer tailored to that question is almost certain to be the one sought-after by the OP.

Get a belly full of information on a subject you don't know and the proper terms for targeted searches in that area will be part of it.

Don't like my answers? Re-examine your question and you will see I am not dishing it out to you, I am refusing to eat what you served up to me.