Re: [CAD_CAM_EDM_DRO] Center tapped transformer

Tim Goldstein wrote:

>Matt,
>
>Been a while since I have noticed you posting. Hope all is well?
>
>So if I connect as drawn what is the ratio of the ac voltage to the
>resulting dc voltage? I would have to assume that it is different than
>what I get with a bridge.
>
>

Really, it will always be about DC = 1.414 x AC (RMS). 1.414 is the
square root of 2.
AC voltage is normally measured in RMS units, which works out to the
same heating value
as a DC voltage of the same value. But, the PEAK reading of an RMS
voltage is, magically,
1.414 times the RMS. A rectifer feeding a capacitor filter charges the
cap to the peak
voltage every cycle (or half-cycle for a full wave rectifier, as we are
discussing here).
SO, that's why it should always be about 1.414, whether half-wave, full
wave, bridge
or center-tapped full wave.

Jon