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Reply to "PS-1 centipede trying to lower voltage to smoke units"

Part of your issue is that when you lower voltage that circuit board cuts out one resistor and you get a 16 ohm single smoke unit.  When voltage rises the second resistor is placed in series and you have a 32 ohm smoke unit.  So while you are cutting the voltage with your diode string you also are shifting to a lower resistance which also means more smoke.  You need to measure the DC voltage out of the rectifier with your set up.  If you leave smoke resistors alone you want to target a voltage high enough to keep the 2 resistors in series for 32 ohms.  So probably around 10-11 Volts DC out of the rectifier.  Or leave the smoke board alone at track voltage and change the resistors to something like 22-24 ohms for a total around 48.  Figure out what you like.  Otherwise get a variable voltage board that can drive the smoke unit at a selectable DC voltage you can set.  See what you like.  You also can use a diode to slow the smoke fan motor down.  It does spin faster at higher voltage despite the 5V regulator.  G

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