Just making sure before I power things up. I just rebuilt an old PS-1 smoke unit with two 16 ohm resistors I wired them parallel for 8 ohms and removed the voltage regulator part of the board. Am I correct that is the standard for PS-2 and 3 ? Curious, what is the voltage supplied by the PS-2 board to the smoke resistor ? Is it the same regardless of whether the board is a PS-2 3v or 5v board ? J
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No, the voltage supplies come from the ps 2 board on the 4-pin connector, it is a PWM not a standard voltage it is a pulsed digital voltage! it's the same pulsed PWM whether it is ps2 3-v-volt or ps 2-5-volt!
Alan
Not quite true. Positive DC voltage slightly higher than track AC voltage is applied to the element. The return to ground is PWM. It varies based on smoke unit size, and engine model including steam versus diesel. Program controlled how much heat. But a good estimate is in the 6V range.
The fan gets 5VDC input and again ground is PWM including a brake FET to do the puff on steam. G
Thanks guys, I've done nearly fifty TMCC conversions but only on my third DCS and frankly I just don't feel comfortable with the PS board. On the first I used a MTH upgrade kit but this one and one before were transplants from RailKing locos and the swap is not nearly as straight forward as the kit. j
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