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50 hz timer motor
wrote:
A few years ago, when there were no tumblers availabe yet in the US
market, I had imported a French-made washing machine (Brandt) to the US
for energy and space-saving purposes. The machine was designed to work
in 220V/50hz and N. America has 110V/60hz. And as a mechanical
engineer, I was naive to think that as long as I had a 220V outlet in
my house, the worst scenario would only be that the machine runs a
little faster (20%) which amounts to 24 minutes in a 120-min wash
cycle.
Well, as it turned out, the machine runs a lot faster. The timing knob
finished a 120-min cycle in something like 6 minutes. The wash, drain,
rinse and spin all were cut short within each function. To this day, I
am still puzzled and not able to solve the problem. If anyone could
shed any light on this subject, I would greatly appreciate it.
That's bizarre, does the timer use a normal syncronous motor? Either way
that part draws so little current that you could very easily make a
little frequency converter, all you need is an oscillator that runs at
60Hz, a couple of mosfets and some glue components.
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