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    Inexpensive Line Voltage changer

    terry37932
    terry37932

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    Location : Knoxville

    Inexpensive Line Voltage changer Empty Inexpensive Line Voltage changer

    Post by terry37932 on Tue Jun 07, 2011 10:01 am

    All,

    I found this link while surfing the net, I'm not sure who the author is but I found it interesting none the less. If your like me and have your origional Dynaco Power Transformers you might find it worth actually doing. Radio Shack has the equivlent transformers for about $12.99ea.

    http://www.angelfire.com/electronic/funwithtubes/Buck_Boost.html

    Comments?

    Terry
    captn
    captn

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    Post by captn on Tue Jun 07, 2011 4:32 pm

    This is from Max Robinson's Web site. I believe he was a Physics Professor and he posts information about tube and solid-state audio projects as well as other things. Definitely worth a look as he has a lot of info about tube amplifiers.
    tubes4hifi
    tubes4hifi
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    Post by tubes4hifi on Wed Jun 08, 2011 12:40 pm

    interesting article, I think I saw it a few years ago. The extra transformer is too big to fit into a Dyna ST70.
    The "poor-man's variac" costs about $65-70, about what I paid for the real variac I use,
    see this page for a decent variac at a great price:
    http://www.allelectronics.com/make-a-store/item/SC-3M/3-AMP-VARIABLE-TRANSFORMER//1.html
    Sal
    Sal

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    Post by Sal on Wed Jun 08, 2011 7:56 pm

    I have built many bucking transformers with slow starts and ready to build another batch when I get back from my business trip in 2 weeks if you are interested.

    Sal

    Inexpensive Line Voltage changer Bucker6
    Blitzen
    Blitzen

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    Join date : 2009-07-10

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    Post by Blitzen on Fri Jun 10, 2011 9:29 pm

    Sal wrote:I have built many bucking transformers with slow starts and ready to build another batch when I get back from my business trip in 2 weeks if you are interested.


    Is there a GFCI outlet that could be used in there that has a manual reset after a power interruption? That would be perfect...
    Sal
    Sal

    Posts : 221
    Join date : 2009-02-05
    Location : Central New Jersey Dynaco-ST70.com

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    Post by Sal on Fri Jun 10, 2011 10:10 pm

    A GFCI outlet won't trip on a power interruption but I can install a GFCI in place of the outlet.

    Sal

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