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Using a keep-alive capacitor on a Soundtraxx decoder

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  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Thursday, August 15, 2019 12:45 PM

 Positive will go to the same place as the blue function common wire.

                                      --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    October 2006
  • From: Western, MA
  • 8,571 posts
Posted by richg1998 on Thursday, August 15, 2019 9:50 AM

Don't forget, any stay alive has a diode and resistor with the capacitor also.

http://web.archive.org/web/20120729061658/http:/www.members.optusnet.com.au/mainnorth/alive.htm

Just identify the positive and negative leads on the connector. Do some tracing.

Rich

If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.

  • Member since
    March 2018
  • 20 posts
Using a keep-alive capacitor on a Soundtraxx decoder
Posted by WestIslandRon on Wednesday, August 14, 2019 6:27 PM

I'm installing a Tsunami 2 TSU-PNP 885014 sound decoder in a remotored Athearn U-28B.  The decoder has a plug for a Soundtraxx Current Keeper.  I have a  capacitor on hand that I'd like to use instead.  Trouble is, I can't tell which lead to the plug is positive and which is negative.  Any advice?

Thanks    

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