Reply to "Resistor replacement for Lionel 610-8057-200 Smoke Unit"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

The problem with going lower than 20-22 ohms is the dissipation in the smoke triac, I measured the triac temperature with 18 ohms at 18V track power, and it was around 90C, a bit higher than I want to see. The 20 ohm resistor topped out at around 75C, pretty warm, but well within reason.

FWIW, I get more than sufficient smoke with 20 ohms with TMCC, so that's my standard upgrade value.

5/25/2010:54 AM

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