120V 60Hz - 220V 50Hz?????

[pocketpc]

50hz transformer on 60hz

My cousin gave me telephone device bring from USA. AC adaptor was marked AC 120V, 60Hz, output 9V ~ 850mA, but mains in my country is 220V 50Hz. How can I use it? I try to use a transformer with output 110V, it works good but slightly hot after about 30'.
Thank you for viewing.

 

[IanP]

.. it works good but slightly hot after about 30' ..

I wouldn't worry much .. most of power adapters will generate some heat .. it's pretty normal ..

Regards,
IanP

 

[E-design]

A 60Hz transformer used on a 50Hz supply will be slightly over fluxed and heat up a bit more. One could compensate by reducing the rated applied voltage by 15-20%. For a 50Hz transformer on 60Hz you would increase the applied voltage

 

[bjeservice]

Dear pocketpc
you mentioned that thr adapter output is 9v,850 mA ,AC . Are you sure the output is AC 9V.
I would suggest you put another adapter better than using two adapters.

 

[Davood Amerion]

Check polarity notation on your adaptor.
and buy similar adaptor (220V/50Hz to 9V/1000mA or higher).

Regards
Davood.

 

[pocketpc]

I've been using a transformer output 110V. It's well. Thank all.

 

[Naveed Alam]

there are 2 standards of power..
220 with 50 Hz
110 with 60 Hz..

from market u can buy converters from onestandard to the other..
otherwise, there is a chance of malfuntioning...

 

[syrax]

can i use gsm charger for 220V with 120V network, becouse i am from Bulgaria and here the current is 220V ~50Hz, i plan to travel in USA can i use my charger only with jack for USA standart

THANKS

 

[PaulHolland]

Hi, You can use the 120V transformer in a 220 - 230 V system. simply put a capacitor of X2 type between the transformer and one 220 -230 V line. You can calculate the capacitor by the Xc = 1/ 2*PI*Fr*C Fr = 50 Hz and C is the unknown. Xc is the resistance you need in between the transformer and the 220 V network. I did this in the past and works perfect. Very cheap way out.

Paul.

 

[creative_35]

there are 2 standards of power..
220 with 50 Hz
110 with 60 Hz..

from market u can buy converters from onestandard to the other..
otherwise, there is a chance of malfuntioning...

There is no such standards!!
Either 440V, 380V,220V,110V - 60Hz
Or 440V, 380V,220V,110V - 60Hz

E-design is correct. it will produce some heat and over voltage if you use 60 Hz transformer on 50 Hz because while designing turns/volt ratio, frequency(Hz) is a factor.

 

[jjohn]

Use your own country adaptor which provides output 9V ~ 850mA

 

[yousafzai]

you can u a step up transformer.......