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resistors before the diode in a bridged rectifier: what does it do?
resistors before the diode in a bridged rectifier: what does it do?
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Old 5th September 2006, 05:05 AM   #1
jarthel is offline jarthel  Australia
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Default resistors before the diode in a bridged rectifier: what does it do?

I've come across lots of designs (mainly for SS) where the designer have placed resistors before the diodes?

something like: http://img101.imageshack.us/my.php?i...titled2dm2.png

What is the purpose of the resistors?

Thank you for the help.
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Old 5th September 2006, 05:41 AM   #2
davidsrsb is offline davidsrsb  Malaysia
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What you have drawn is "in series" with the diodes, which reduces inrush current and the crest factor of the supply current.
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Old 5th September 2006, 05:38 PM   #3
Jan Dupont is offline Jan Dupont  Denmark
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See also this thread:
http://www.diyaudio.com/forums/showt...threadid=85394
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