Just a FB page for now:
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Bipolar DC power is common in many devices that have audio power amplifiers. The important specifics is that the components that attach are all isolated. That is, no assumption that the negative is going to be the ground connection. Electrically, it's the DC equivalent of the 240VAC Split Phase system we use in the US where we have 2 hots and a neutral that's created by a center-tapped transformer.?
Randy Cain