Problem: TMCC board instructions from ERR Co. state not to exceed 20 volts lest the board die on you, but the open frame prewar-style motors in my Pride Lines City of Denver like prewar voltage levels which can exceed 20 volts (up to 24v). They run OK with 18-20 volts to track, but when the power draw pulls down my Z4000's output voltage to 16 volts it does not work. I don't want to correct by upping voltage at the handle, because when the train is slowed or stopped the baseline voltage returns. If that's 22 volts, the TMCC board is at risk. I know it's an unusual issue, but does someone know of a device to regulate the voltage output? From my limited research it would be a "low drop out" AC voltage regulation circuit (LDO meaning it can regulate to within that 1-2 volt difference between 22 volts and the 20v limit, doesn't "drop out" and fail to regulate when difference is so small). If baseline at Z4000 output terminals can be 22v and device limits track to 20v, the times it may drop to say 18v under load will be workable.
Thus far searching for a device like this, to work in this AC voltage range, has not been successful. Thanks for ideas and sources anyone may know of. This COD project has been a learning experience!
Don
