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ZW rectifiers

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  • Member since
    April 2003
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ZW rectifiers
Posted by Anonymous on Friday, December 5, 2003 3:10 PM
What's involved with replacing a ZW transformer's whistle rectifiers with diodes? Is there a specialty piece made to fit, or do I just get any generic diode with a high enough amperage rating & somehow solder it into place?
  • Member since
    September 2003
  • From: West coast, USA
  • 356 posts
Posted by rlplionel on Friday, December 5, 2003 4:20 PM
To be safe, I would get the replacement part from a toy train parts dealer.
  • Member since
    April 2003
  • 305,206 posts
Posted by Anonymous on Saturday, December 6, 2003 10:30 AM
I believe that it would be easy to wire in a rectifier to take the place of the old copper disk but it would need to be a large one. With some safety factor it would need to be rated for a constant current carrying capacity of about 20 amps @ 50V. If you try this it would be a good idea to match the polarity of the exisiting rectifier.
  • Member since
    April 2003
  • 305,206 posts
Posted by Anonymous on Sunday, December 7, 2003 1:57 AM
1) Yes, I've been trying replacement parts suppliers & it's a tedious search for a non-standard part. Finding the original disc rectifiers is easy enough, but I want something more durable.
2) I guessed 25 amps to be safe & figured trial & error (or a DPDT switch) would get me either bells or whistles.

THANKS

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