2007-11-05 22:07:33 · 14 answers · asked by llo_uk 2 in Science & Mathematics ➔ Engineering
transformer,
Try rswww, or farnellinone online, or Maplin or machinemart on the highstreet - 240V to 110V transformer
Whoops - a 110V to 240V transformer is whats needed (very common)
2007-11-06 00:38:49 · answer #1 · answered by whycantigetagoodnickname 7 · 1⤊ 0⤋
I would expect a transformer to be cost effective, unless this is a very small pump. Have you looked at buying a 110V pump?
The starting current will be around 8x the running current, so be sure the transformer and supply circuit will stand the current. Also, ac motors run at less than power factor 1, so the current will be about 25% more than Power in W divided by the voltage.
example A 1kW motor will require at least a 1250 VA transformer and will draw about 5.Amps from the 240 volt side and require about 11. A on the 110v supply side. However the starting current (110v side) will be around 90 A for a few seconds. This may blow a fuse.
2007-11-07 08:50:56 · answer #2 · answered by Innealtair 2 · 0⤊ 0⤋
You need a transformer for reducing voltage from 240 volt to 110 volt, ore you may use resistance to create a voltage fall.
The problem can probably be solved by using diodes and transistors. I do not know how.
2007-11-07 05:48:44 · answer #3 · answered by anordtug 6 · 0⤊ 0⤋
Search the web for "Step up transformer" and buy one.
When making your choice, make sure you choose one which can handle the power you will be using (how many amps will the pump draw) and whether you buy it in a box or on its own.
Contrary to what some people have implied, amp for amp, transformers are the cheapest way of doing this. They are also the most efficient, most reliable and simplest!
2007-11-06 00:59:15 · answer #4 · answered by Anonymous · 1⤊ 0⤋
The simplest method is to use a step-up transformer. All you have to check is that it's capable of supplying the current (amps) the pump needs.
2007-11-08 04:59:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Yup, transformer to step up the volts is required.
2007-11-05 22:13:51 · answer #6 · answered by Neville 5 · 2⤊ 0⤋
Single phase 240 vac is readily available from any household Edison circuit.
2007-11-06 10:10:36 · answer #7 · answered by Milldonkey 2 · 0⤊ 0⤋
You can use a step up transformer ( but costly)
instead, use converter-inverter circuit for step up the voltage
(Normally available in the market)
2007-11-05 22:20:16 · answer #8 · answered by ranjith 3 · 0⤊ 0⤋
Dependant on the current, it would be a toss up between an inverter or transformer.
2007-11-06 00:33:15 · answer #9 · answered by firebobby 7 · 0⤊ 0⤋
Err - a step up transformer?!
2007-11-08 23:44:51 · answer #10 · answered by Anonymous · 0⤊ 0⤋