From: whit3rd@gmail.com   
      
   On Tuesday, July 30, 2019 at 7:04:32 AM UTC-7, Peter Percival wrote:   
   > What is the advantage of a four diode bridge full-wave rectifier over a   
   > two diode full-wave rectifier.  There must be some, else why accept the   
   > extra cost?   
      
   There's copper losses, and diode-drop losses, and core size difference.   
   For a center-tapped winding, you need longer wire for the coil, and   
   that raises the core size (unless you accept higher resistive heating   
   from thinner wire).   With a full-wave bridge, four diodes, you have TWO   
   diode drops on each conducting half-cycle, but with a center-tapped two   
   diode fullwave rectified circuit, there's only ONE diode drop.   
      
   And, given a choice, a four-diode bridge and center-tapped coil gives  you   
   TWO power supplies.   That's very convenient.   
      
   --- SoupGate-Win32 v1.05   
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