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Reply to "Mtg itad"

Charles,

I've also been working on an isolated rail detector using a bridge rectifier and I can validate what Stan2004 and GRJ are advising you.  In testing I was using a 'kludged up' bridge rectifier thru an optical isolator and reading an Arduino input pin.  With no smoothing capacitor the readings were all over the place.  I installed a 330uF / 35V capacitor and the readings became solid digital 0's and 1's (or 0's and 1022/1023 when reading analog).  The attached schematic is what I plan to use on my layout.  Hope this helps or at least provides some food for thought.  Best of luck to ya'.

Barry

Isolated Rail Detector

PCB

Attachments

Images (2)
  • Isolated Rail Detector
  • PCB

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800-980-OGRR (6477)
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