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    D. T. N. Williamson - the father of modern push-pull tube amplifiers

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    Bob Latino
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    Posts: 1933
    Join date: 2008-11-27
    Location: Massachusetts

    D. T. N. Williamson - the father of modern push-pull tube amplifiers

    Post by Bob Latino on Sun Aug 08, 2010 6:02 pm

    Most Dynaco followers know that the push-pull output stage with negative feedback on tube amplifiers was developed by D. T. N. Williamson about 1947. Ed Laurent and David Hafler used the basic Williamson output circuit in the creation of the Dynaco Mark II in 1955. I ran across two of Williamson's original papers the other day. These were originally published in the British magazine "Wireless World". The 1952 article is in more depth.

    D.T.N. Williamson 1949 article

    D.T.N. Williamson 1952 article

    Bob


    Last edited by Bob Latino on Mon Aug 16, 2010 4:12 am; edited 1 time in total

    Blitzen

    Posts: 41
    Join date: 2009-07-10

    Re: D. T. N. Williamson - the father of modern push-pull tube amplifiers

    Post by Blitzen on Sun Aug 08, 2010 6:50 pm

    Very cool, Bob!

    baddog1946

    Posts: 264
    Join date: 2010-02-03
    Location: Costa Rica

    Re: D. T. N. Williamson - the father of modern push-pull tube amplifiers

    Post by baddog1946 on Mon Aug 09, 2010 9:13 am

    Hi Bob:
    I was wondering if you had any info on the Dynaco 160 tube amps and whether or not they were up to the original designs from Hafler.The in quality.
    Also what have you fond out about the performance of that beautiful transformer you had made to play around with the KT-120 amp project.

    Bob Latino
    Admin

    Posts: 1933
    Join date: 2008-11-27
    Location: Massachusetts

    Re: D. T. N. Williamson - the father of modern push-pull tube amplifiers

    Post by Bob Latino on Mon Aug 09, 2010 9:16 am

    baddog1946 wrote:Hi Bob:
    I was wondering if you had any info on the Dynaco 160 tube amps and whether or not they were up to the original designs from Hafler.The in quality.
    Also what have you fond out about the performance of that beautiful transformer you had made to play around with the KT-120 amp project.

    My chassis company has delayed the production of two prototype chassis they are making for me. I am just small business to them and they will try to work it into their production cycle soon ..

    Bob

      Current date/time is Thu Sep 18, 2014 10:46 pm