Classic transformers for 220v to 110v or similar (with 50-60hz) are very large and expensive for high power (say 2000W).
For regulating current, a dimmer can be used (and most of the search results return this) but the voltage wave peak is not reduced if I understand correctly.
For DC-DC or AC-DC switching regulators are used, and at least in principle one could use a high power AC to DC and then an inverter to get AC again. But I guess many of the parts in the middle could be omitted for this particular application (hopefully reducing the size and costs).
I'm looking for a relatively simple/inexpensive circuit used to convert mains 220V to 110V. It doesn't have to be a perfect sine wave, but the idea is that devices like a TV would work (not only motors and heaters).
- Why aren't there commercially available consumer (non industrial) implementations of this idea?
- Is it viable to do so (reducing size and costs compared to iron transformer)?
- Any sample circuits there?
Please correct me if I'm missing something.