There is a circuit with two 9V setup in series. How should the batteries be connected to allow 9V to flow to one switch, but 18V to flow to another switch?How do you split the voltage of a circuit in series?
connect the positive of one battery to the negative of the other. Take the 18v from the unconnected ends of the batteries. Take the 9 v from either battery.How do you split the voltage of a circuit in series?
Goober's answer is OK, but he didn't say, take the 9V positive from the connection between the 2 batteries. Use the negative 18V as a common negative for both 9 and 18 volts.
If the 9V draws a considerable current, it will affect the 18V output, and of course, the battery that connects to the negative side will go flat first. When it does, the 18V drops off also.
It doesn't sound like a particularly good scheme, do you have any other way to do it?
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