SMOKE
#1
Can a smoke generator be wired up to work with DCC?
Les
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#2
Don't see why not. Decoders are basically remote on/off switches, so as long as they are rated high enough for the draw of the applicances connected to them (lights + motor + sound + smoke) they should work. You will need one with enough functions to include the smoke. This should not be a problem, since many decoders have up to 12 functions now, and even ones with fewer functions can be "remapped".

If you're thinking of smoke from a factory chimney, a stationary decoder should do the trick.

Andrew
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#3
the problem is, a smoke generator in a locomotive is a direct short which generates heat causing the oil in it to smoke
Les
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#4
Well... maybe try it with a TCS decoder. They have a no questions "goof proof" policy that allows you to get a replacement in case you "let the smoke out" (of the decoder, not the smoke unit Wink Big Grin).

Andrew
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#5
I would sugest that you use a relay to control the smoke unit. Then use one of the function outputs of the decoder to operate the relay.
Most decodrs will handle only about 100 milliamps per function. I will bet the smole unit is way above that. That is why you should use a relay.
The decoder will turn the relay off or on - the n/o- n/c contacts of the relay could operate the smoke unit. Could operate off the track power.
Would be a drain of the DCC system power output.
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#6
I tried going off the track power and it shut the system down. I think it is going to be more trouble than it is worth even if it is doable.
Les
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#7
I thought there were already locos available DCC with Smoke.....

There has to be some kind of isolation circuit that allows for the smoke under DCC control.

Also, I thought the "wire" inside is "Resistive" wire, not a direct short. and yeah - in G they use about 200 ma... a large load...
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#8
I used 2 jumper wires with alligator clips, one on the smoke unit one on the wire. When I touched the wires to the rails the system shut down.
Les
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#9
The smoke unit is a dead short as far as a DCC system sees it. It is just like a heating element of a stove. If you check to see how many amps it takes to operate, I bet you will be suprised how much current it draws. Most systems will shut down, thinking that there is a short on the layout.
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#10
Ok - Now i understand.. Big Grin Big Grin 35 35
~~ Mikey KB3VBR (Admin)
~~ NARA Member # 75    
~~ Baldwin Eddystone Unofficial Website

~~ I wonder what that would look like in 1:20.3???
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