110 V 60 Hz to 220 V 50 Hz - of the shelf

[jancumps]

I'm looking for suggestions for a commercial America to Europe converter. For household, not Lab.
It should convert 110 V 60 Hz to 220/240, 50 Hz. It needs to deliver around 20 Watt.
The shape of the output signal isn't very critical. It has to be sinosodialish, but doesn't have to win a beauty contest.
It has to drive a synchronous AC motor so frequency stability at the output side is more important.
Drift over time is not critical, just not a lot of short term frequency drift because the receiving side is a turntable.

I would appreciate if you know of such a product.
 

[Ice-Tea]

You could, off course, tie a 12V converter to a car inverter and call it quits. Probably what's going on inside an all-in-one anyways...

[jancumps]

I've seen a few ebay offers that do that. It is an option that I keep open.

[edpalmer42]

Some higher-end UPSs (i.e. Liebert GXT2) have the ability to output a different frequency than the input.  Voltage conversion would have to be done with an external transformer.  But unless you can find a UPS really cheap, the car inverter would probably be a more cost-effective solution.

[schmitt trigger]

Out of the box idea; 

The power requirements are low, so I am tempted to suggest a class-D audio amplifier, feeding a step up transformer.

The frequency stability and the waveform distortion would be dependent on the source feeding the input.

[jancumps]

110 V ?

[NiHaoMike]

A VFD would work if you can find one cheap enough.