How can I use a 110V (US) appliance on a 220V (SG) electrical supply without a convertor or transformer?

Question

Can I either change the power adaptor or install a 110V power point?

Answer 1

Most appliance have a voltage selector switch.
A slide switch to switch between110 & 220,

Answer 2

Now I must admit to not knowing what an "SG" supply is (Power in UK is all A/C 230-240V) But the following is based on electrical knowledge/experience:

You say there's a power adapter involved...

As long as you can find and adapter that's made to plug into the 220V socket AND outputs the same voltage as the original one (within a few percent) AND is rated to supply AT LEAST the current required (But can be more, no prob).

That should work. (Can get SO many adaptors on ebay)

DO NOT fit a 110 socket to a 220V supply! It'll still supply 220V and burn any 110V appliance plugged into it! And the 110V socket isn't designed for 220 so that might burn too.

Having said that, if it's your house, socket, supply and appliance, do what you like - just have a fire extinguisher handy!

Answer 3

That is like asking, "How can I fly this airplane with an outboard boat motor?" You MUST convert the 220vac to 110vac one way or the other, if the 110V appliance doesn't have a 220V setting.

There are only a few ways I can think of:

1. Step down transformer- 220vac to 110vac.
2. Switching power supply that has a 110VAC output.
3. Putting two 110 devices in series, but this is tricky and doesn't work for appliances, generally, but for lamps, etc.
4. A rotary converter that has 220v input and 110v output.

If you only need it to work for a few minutes, like an iron, then use it on 220 until it burns up, or keep unplugging it after it gets hot and before it burns up. But you must be willing to risk it being destroyed.

Answer 4

110v To 220v Transformer Singapore

Answer 5

Look on the data plate. Some electronics have universal switching supplies that operate on 50 or 60 cycle, 110 or 220 volt with no adjustment.

Answer 6

Check your appliance if it has selector switch installed in the sides. Otherwise, you'll need a transformer to step down the supply from 220 to 110VAC.

Answer 7

Install 110V power point but be careful and take care about frequency (220V/50Hz.....110V/60Hz). If you connect your device in unappropriate power point, current can damage this device. Veradisca & Best Regards, Neven.

Answer 8

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