Transformers and Hz Conversions

Reduce it to 110V / 50 Hz and forget about it.

You have a internal transformer which will not mind much for the slight change in Hz (it will mind just a bit) and the rectifier portion will not mind at all.

The smoothening filter also I don't think mind it.

I have seen multi input (110/220 V) transformers. After all they are switched and regulate according to output and not input.

My mobile charger is rated 100-240V 50-60Hz. Suuuy (as best as my eyes can see) Model SYS1196-0505-W2E

http://www.dehner.net/sys1196/

No any affect, if you did that.

in fact, you should read carefully adopter instrument. some of them, especially modern adpter can accept a wide voltage range from 96v to 260v ac.

Most practical answer and to think that we are using our brains on wrong path - 24Vx2A - why to bother with what I have, the 2: 1 transformer may cost more than the new adaptor.

GA

Wire 2 adapters in series. Apply 220 Volt 50 HZ. Wire outputs in parallel, observing polarity. Your output will be 12 Volt 4 amp. I am assuming that the output from your adapter is DC. This was not clear to me from your post.

Additionally, you could put in a switch to select either parallel or series wiring for your input to the adapters to make either type of voltage work for all of the equipment you sell. That you are selling equipment is inferred by the fact that you have a customer. Is this correct? Depending on the type of equipment or product you sell you may want to offer a 220 Volt version (European) seperately and tailor the components (motors, transformers, circuit boards, etc.) to suit that market. The more information you provide the better able we are to answer your question or come up with a solution.

As alwasy, best regards,

Keywalker

I agree with Cn. MODERN power adapters use switching power supply technology, and will work from power mains anywhere in the world. Assuming that you are in the US, you might see if Radio Shack has such a creature, or Fry's Electronics, or whomever. Just look for input voltage of 96 VAC to 240 VAC and 12VDC 2 amp output. You might have to change the output connector to match the device being powered. Also line frequency is not relevant because the switcher rectifies the mains voltage to DC.

Sincerely

Bill

There was a time when people here in the Philippines bought surplus TVs from the US just to say that their unit was imported. These were 110V units so they bought 220/110V step-down transformers so they could use them.

I used to work in a TV repair shop and we had quite a number of these units come in. Someone would unplug the transformer, use it for something else, then someone comes along and plugs in the TV and POOF!.

For this reason (and other reasons - adapters are cheaper than transformers), go and buy a 220VAC to 12V/2A adapter. No questions need to be asked as to whether it would work.

regards,

Vulcan

If your application needs 12V/2A DC, it's not a matter what tipe of adapter you use. You can use a 230VAC/12VDC adapter or a switching type 90-240VAC/12VDC one.