Somehow I missed learning about capacitor dividers and saw one when reading a tear-down for an agricultural electric fence charger.
It got me thinking about them and wondering what kind of rules there are for them (I can find very little info on them for the questions I have). For instance, if I expanded the article I read to be for a 15kV pulse, could I create a 30pF on the FR4 (so let's call it 2 in^2), and then add in a /0.1uF through-hole capacitor to divide down to and output of 4.5V?
The math seems to make sense, but I wasn't sure if I was defying the laws of physics (or maybe over-stating what FR4 is capable of dropping voltage wise). Any insight or articles to this kind of stuff would be dine as well.
It got me thinking about them and wondering what kind of rules there are for them (I can find very little info on them for the questions I have). For instance, if I expanded the article I read to be for a 15kV pulse, could I create a 30pF on the FR4 (so let's call it 2 in^2), and then add in a /0.1uF through-hole capacitor to divide down to and output of 4.5V?
The math seems to make sense, but I wasn't sure if I was defying the laws of physics (or maybe over-stating what FR4 is capable of dropping voltage wise). Any insight or articles to this kind of stuff would be dine as well.