Yes I know.
In fact, this version is not the raw circuit I initially came up with.
After some thinking, clean-up and optimization, I arrived at the conclusion that I could spare two bulky mylar caps by using implicit capacitive dividers, but at the cost of a doubled no-load voltage.
In general, it shouldn't be a problem, but here is the non-abridged version, for cases when the light or no load condition has to be taken into account.
With 4 big caps, it isn't very attractive from a practical point of view.
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I am afraid that is a step too far: a high quality bipolar for crossovers might survive that kind of outrage, but two standards elco's back to back certainly won't....
It will end with a double bang....
this is wrong, the safety earth that connects to the chassis metal work has
nothing to do with the psu common or zero reference....
the safety earth is to protect the user from electrocution should
there be massive earth leakage due to component breakdowns...
if you want to get dual polarity supplies out of a single secondary winding then this is what you need...
to get dual polarities out of this, make the junction of transformer lead B, C1 and C2
your 0 volt reference and take output voltages at the other ends of C1 an C2......
the circuit shown is a full wave voltage doubler type so transformer utilization will still be quite good...
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