> In the above example,  the desired voltage is 9V but there is the diode
> and regulator and what we want into the input of the regulator is 2V
> higher than the 9V => 11V.  Next there is that pesky diode voltage drop
> through the bridge. Another 1.2V => 12.2V therefore in reality the
> _desired_ RMS transformer voltage is 12.2V

This is also wrong.  12.2 is the minimum *peak* voltage the transformer must
put out, which allows for no ripple at all.  The RMS transformer voltage
would be 12.2 / sqrt(2) = 8.6V.


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