i could not have asked in a more detailed way because i am new to electronics but with your last sentence you answered my question somewhat. thanksAt this point the spelling. You really have to better define what you call each? Does a "Power Distribution" board control the distribution of power? What do you consider a "circuit board" and if a power distribution solution is on a circuit board which is it? Really getting into a game of semantics with that question. A power distribution board can be a circuit board but not all circuit boards are power distribution boards.
Ron
thanks yes I understand nowA circuit board can have any kind of circuit on it.