This series setup of 9 volt batteries was given to me by a niece with the request that I make her a new one as it is dead. It is used to power a control board which runs a number of light bulbs switched on by switches (some type of spring loaded thing that is placed on a chair) that is used to determine who jumps to their feet first in a school quizzing meet.
I have not yet seen (but will before I do anything) the switches/control board. I just wonder how this has never been shorted out and what the result would be if it was. 90 volts DC is pretty potent.
I have not yet seen (but will before I do anything) the switches/control board. I just wonder how this has never been shorted out and what the result would be if it was. 90 volts DC is pretty potent.