230V/50Hz to 110V/60Hz Problem

What are the worries and what has been tried?

it will work, go ahead

It depends of what type of adapter you have. If it is an adapter with a transformer 110V/60Hz, it not so good to connect it to a 50Hz source, the core is to small. You must procure an other adapter for 110V/50Hz or 230V/50Hz.

But if it is a modern switched adapter you can use a 50Hz source.

How to decide if your adapter is with a transformer or switched? The weight is much more heavy for a 60Hz transformer than a switched power supply transformer. I think if the weight is more than 1.5 kg it will be with a transformer. Or you can lift the cover and look.

I tried Its working fine but it given 16V in open condition and if i connected to the circuit its become 12.4V why ? but circuit is working properly.

Thank you for all your valuable inputs.

K.P.Mahalingam,

Electrical Engineer.

INDIA

If you transform down to 110 volt 50Hz... then your adaptor will work fine... there are no frequency problems with 50 / 60 Hz operation.

You say you have 16 volts open circuit but as soon as you put a load on it drops to 12.4V... Once again that sounds okay, if the output isn't regulated then the output voltage will be approximate and depend on the load, even if it is regulated some regulators need a minimum load to operate correctly...

So it sounds like its working leave it alone, stop fiddling with it!

John

If I understand correctly you have a 110v/60hz to 12v dc adaptor and you wish to run this from 240v/50hz supply via a transformer. This will work fine but why don't you cut out the middle man and go straight from 240v/50hz to 12v dc? A 2A adaptor to do this would be readily available for probably less than your 240/110 transformer.

I agree: here's a UK mains to 12V DC 2A supply for about 32 $US

http://cpc.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=PW01466

Depends how many you want!

Make sure your adapter is a switching regulator type with isolated DC output. If the adapter take use of 60HZ transformer the lower frequency from the 50hz circuit could permit the 60hz transformer to saturate thus drawing high current. Find out from the adapter mfr about the type of conversion applied. Even at that you might have higher ripple in DC output. You might try buying a 230-50hz to 12VDC converter? If you cannot find one we sell you one of them the you could become a distributor.

Charlie

Depends ... is it an electronic adapter (switched power suply) or just transformer and rectifier ?

I don't get this post. Something not right.

You ask these questions yet say you are electrical engineer??????

actually.... you're right, guest ....

If we see his first post, I guess we're lucky that he has only one doubt ....

Hi

ONCE AGAIN I THANK TO ALL FOR YOUR VALUABLE INPUTS.

I ALREADY HAVE CUSTOM MADE 230V/50Hz TO 12v - 2A ADAPTERS BUT MY CUSTOMER NEVER ACCEPT IT BECAUSE THERE ADAPTER HAVE SOME CONTROL AS WELL AS SOME VOLTAGE REGULATORY AND INDICATOR CIRCUITS SO THEY WANTS TO USE THAT ONE ONLY WITH 110V/60 HZ SUPPLY.

NOW ALL PROBLEMS ARE SOLVED WE GAVE 110V/50HZ AS INPUT TO THAT ADAPTER. UPTO THIS DATE WE FIND NO ERROR OR ANY CHANGES IN THE DEVICE FUNCTIONALITY.

SO NOW I COME TO A CONCLUSION THAT WHEN WE USE HIGHER FREQUENCY THEN ONLY WE CAN THINK ABOUT THE CORE SATURATION OF TRANASFORMER.

THANK YOU

K.P.Mahalingam,

Electrical engineer,

INDIA.

Ah, how cynical you are guest. This is the internet where we take everyone at their own assessment. I do wonder myself sometimes but continue to take queries at face value!

It will depend on the appliance which you want to use with your transformer.

Normally, most of the appliance will not effected by cycles.

Equipments like battery chargers, computers, printers, stereos, tape and CD player, VCR, DVD players, etc. will not be effected by the difference in cycles (Frequency).

If your device can be effected by the different in frequency then you can choose to use switching power transformer.

That can transform in terms of voltage and frequency.