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

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pocketpc

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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

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.. 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

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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

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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

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

Regards
Davood.
 

pocketpc

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

Naveed Alam

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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

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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

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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

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Naveed Alam said:
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

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

yousafzai

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

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