Why does

  • #1

Main Question or Discussion Point

..fullwave bridge rectification raise the voltage *1.41? I scanned the net but I can't find an explanation as to why, only that it does..
 

Answers and Replies

  • #2
798
1
Remember, ac voltage is really regarding RMS voltage, and hence,
[tex]\sqrt{2}V_{rms}=V_p[/tex]
where
[tex]\sqrt{2}=1.41.......[/tex]
 
  • #3
Aah, so basicly what's going on here is that the secondary ratings on transformers is given in RMS? and not peak?
 
  • #4
309
1
Aah, so basicly what's going on here is that the secondary ratings on transformers is given in RMS? and not peak?
That's correct. Also note that a bridge rectifier will have the current passing through two diodes, so the output voltage will be 1.4 volts less than the peak.
 
  • #5
Good! thank you both! the world now makes sense again
 

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