While working on and experimenting with my new found pinball hobby, trying to figure out what each part is doing on my boards and why, I was thinking.........This might be another dumb question for some of you guys! I'm trying to teach myself and was wondering why you can use a higher voltage rated cap. As an example, instead of a 35 volt 100 mf a higher voltage 50volt is Ok. I read a lot of articles saying it's fine to use higher voltage rated caps, but I haven't been able to find out why? What does it change? (if anything) where is the % limit, how big is too big? If there is no difference ,then why all the different voltages? Why, not just 100 volt or higher for everything? Can someone lay this out for me in half dummy terms? Or point me in a direction of something that explains this.
Also, why not just use 1% resistors on everything? Is it a waste, would it help? Was it originally a cost issue in the assembly line, and the 5%, 10% were cheaper. Or is there some other reason that you would actually want a 5% 0r 10%?
I know this stuff might be basic, but these questions might help someone else that is trying to learn and might be curious. I can somewhat read a schematic and can swap parts, but I want to know why, and what that part is doing.
Again, I don't know enough....to know!
Sry, if these are newbie repeat questions!