Reply to "18V or 24V Bulbs?"

rrmanOGR Forum Member

Originally Posted by cjack:

Thanks. I was just wondering what the characteristic impedance of O gauge track would be. Of course there are all sorts of issues with calculating this...and probably doesn't matter that much. It's probably just that one has some kind of load...like a bulb.

What is the "filter" that doesn't cause heat like a bulb?

I believe Susan Deets son did some measuring, calculating and came up with an optimal set of capacitors, resistors and maybe an inductor values that "tamed the wild beast". Sure she will chime in.

I also believe it was Marty Fitzhenery (sp?) who discovered this trick when he was beta testing the prototype TIU before it was sprung on the public

3/1/125:58 PM

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