One please help advise one of best-buy, the most efficient step-up, ie. boost converter method, products for AC 220 V as the mains sometimes down to as low as 179.5 V ?
6.8KW 220V Automatic Voltage Stabilizer AC regulator Power Supply 120-270VOne please help advise one of best-buy, the most efficient step-up, ie. boost converter method, products for AC 220 V as the mains sometimes down to as low as 179.5 V ?
Which country are you in?One please help advise one of best-buy, the most efficient step-up, ie. boost converter method, products for AC 220 V as the mains sometimes down to as low as 179.5 V ?
Need is ~ 330 - 540 WattAn autotransformer would be the most efficient, but you would have to change the taps as the voltage varies.
You haven't said how much power you need.