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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


3 posters

    correct current of the secondary of the power transformer vta120

    jonny6336
    jonny6336


    Posts : 29
    Join date : 2018-01-31
    Age : 46
    Location : Italy

    correct current of the secondary of the power transformer vta120 Empty correct current of the secondary of the power transformer vta120

    Post by jonny6336 Wed Feb 17, 2021 12:20 pm

    I am making my st120, wanting to make the power transformer, primary 230V as mains voltage in Italy, the secondary to be done at 420 - 0-55-420, what current should it have?
    Bob Latino
    Bob Latino
    Admin


    Posts : 3263
    Join date : 2008-11-26
    Location : Massachusetts

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    Post by Bob Latino Wed Feb 17, 2021 3:44 pm

    jonny6336 wrote:I am making my st120, wanting to make the power transformer, primary 230V as mains voltage in Italy, the secondary to be done at 420 - 0-55-420, what current should it have?

    For an ST-120 type amp, you should have a current capability of about 400 - 425 milliamps.

    Bob

    jonny6336 likes this post

    peterh
    peterh


    Posts : 1833
    Join date : 2012-12-25
    Location : gothenburg, sweden

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    Post by peterh Wed Feb 17, 2021 6:20 pm

    Are you producing this in europe ? Will it be available for us in europe ?
    ( asking since it's very expensive and timeconsuming to import from US )
    jonny6336
    jonny6336


    Posts : 29
    Join date : 2018-01-31
    Age : 46
    Location : Italy

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    Post by jonny6336 Wed Feb 17, 2021 6:27 pm

    buying it from Bob given the situation we are experiencing now is too expensive. so I would have it made here by a special company, the cost still I don't know but I will know soon
    jonny6336
    jonny6336


    Posts : 29
    Join date : 2018-01-31
    Age : 46
    Location : Italy

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    Post by jonny6336 Thu Feb 18, 2021 9:23 am

    thanks Bob, as always very kind to answer. I was hoping for your intervention.

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