Reply to "Lionel KW Transformer Rebuild"

CraftechOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

@Eddie in FL posted:
I just went back and reread some of these posts. The resistor wire is not required with the zener diode.
I do have a question for everyone. If I went with a silicone diode then I could easily wire a DPDT switch that could be used to flip the polarity of the diode. This would allow the sound action to be the whistle or bell depending on that switch setting.
Thoughts anyone ?
Thanks
Eddie

Mine is a silicone diode with a sound activation button. I ended up replacing the flimsy Lionel button with a home built one from Susan's website that also includes block protection via a PTC:

https://slsprr.net/features/SoundBlkProtect.htm

It works really well.

Note: If you use either button all center rail power has to go through the button in series before reaching the track. And you will have to hold down the button for at least 2 seconds which will slow down the locomotive engine. I don't know any way around this in Conventional.

John

2/15/227:52 AM

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