By using a Variac Transformer
You step down voltage from an AC generator with a transformer.You step down frequency from an AC generator with a motor/generator set, or with an inverter. This is not a common thing to do.
Yes, the AC current can be amplified by using Step-down transformers, but one problem is the AC voltage will decrease with Step-down transformer.
You can use a voltage transformer or converter that is specifically designed to step down the voltage from 240V AC to 220V AC. Make sure to select a transformer that is rated for the appropriate power handling capacity to ensure safe and efficient operation.
220v 50Hz
A transformer steps the voltage of an electrical power supply up or down. The transformer must be correctly designed for the voltage and current levels that it is intended for. Only ac can be used with a transformer, which is designed to work at a particular frequency.
Because transformers are usually used to step down AC votage, however they usually can accept DC power to step down or up.
NAVEED45
Yes
A step-down transformer lowers the voltage of an AC current. The higher AC current is put through one side and the other side the lower AC current is delivered.
By using step-down transformer
Depending on the device, it may or may not work. And if it works, it won't work properly. A 60Hz devices needs 60 cycle current, not 50.
You need to acquire a 110V to 220V step-up transformer. Just be sure to take into consideration the frequency of the AC voltage. I believe the UK runs at 50 hz. and the US is at 60 hz. What that means to you is that the waterfall will run faster here in the States. Also be sure that the transformer's output will match the power consumption of the device you're going to power with it. Do they make such a device? Yes, but you can also use a 220V to 110V step-down transformer in reverse. (Providing it's just a transformer.)