When I run 24VAC into a full wave bridge rectifier followed by a 220uF electrolytic capacitor to turn it into ~32VDC, the source has two wires. Does it matter in what order I connect the AC wires to the input to the bridge rectifier? If so how do I determine which wire goes where? I suspect that it's totally symmetric on the input side, but I'm am full of doubt when it comes to AC. Sorry if this is just a really dumb question.
Answer
When you're looking at an AC source in isolation such as in your question, indeed there's no polarity and you can connect the wires either way round.
When combining two or more AC sources in series or parallel, the relative phasing is very important.
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