Purpose: To supply 110v 60Hz power to a Lionel o-gauge train set from 240v 50Hz mains in New Zealand.
While the train itself will run fine on 110v at 50Hz, the digital electronics for sounds can be ruined by the 50Hz sine. This claim is based on much reading online, not based on my own knowledge. Many people have posted about ruined transformers from running ONLY a step down. Due to the cost of the trains, I wish to have it run on it's designed Hz.
Proposed method: Use a 240v New Zealand market computer power supply to feed 12v dc to a high-wattage US-market automotive inverter that supplies 110v power.
Relevance to stack exchange posting: If this is indeed a viable solution to this problem it will be very useful for many many people wishing to use US-market electronics outside that market.
My idea seems to make sense to me - that once converted to DC there isn't any Hz to measure as there's no wave, and the US-market car adapter will put out AC at the American frequency. The computer power supply puts out plenty of Amps, and the higher-wattage car adapters put out plenty for the Amp draw of the train.
Please comment to let me know if this is a sensible approach or not?
Please focus on the idea for getting the 110v at 60Hz, not on other aspects of the issue. I appreciate the intent, but this question is specifically about whether my proposed method will work.