Electrical units.
 

i'm trying to buy a 240>120Vac transformer, and i have found a very small one for £20 that might suit my needs, but the only info i have about it is that it outputs 115VAC@30VA... wtf is VA?

ta :)

sorry, forgot to add... Would it power a 65Watt pump?

VA is an electrical engineering term deriving from the fact that current and voltage aren't in phase with each other for most electrical loads (hence PSUs having "power factor correction" to fix this).
The VA value is the (Peak Voltage) x (Peak Current), while the wattage is the Peak (Voltage x Current). Hence for a pure resistive load (no capacitance or inductance) 30VA = 30W. This will actually produce more like 25W for most real loads.

damn, thats no good for what i need :(

oh well. thanks alot pdf27! i needed that info in a hurry :p

i found what i was looking for! after about 3 weeks of searching i found...

Voltage Converters

i chose the 200w model, cost me $20usd, the shipping was $30usd tho :mad:

Thinking about it that should be (RMS) not (Peak) in all the cases there, but it doesn't actually make any difference to the answer - it's just in case someone decides to get awkward :p