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  1. #1
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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.

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  2. #2
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    Re: 120V 60Hz - 220V 50Hz?????

    .. 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



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

    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



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

    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.



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  5. #5
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    120V 60Hz - 220V 50Hz?????

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

    Regards
    Davood.



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  6. #6
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    Re: 120V 60Hz - 220V 50Hz?????

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



  7. #7
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    Re: 120V 60Hz - 220V 50Hz?????

    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...



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

    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



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  9. #9
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    Re: 120V 60Hz - 220V 50Hz?????

    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.



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

    Quote Originally Posted by 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...
    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.



  11. #11
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    120V 60Hz - 220V 50Hz?????

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



  12. #12
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    Re: 120V 60Hz - 220V 50Hz?????

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



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