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 products



    Posts : 35
    Join date : 2010-03-06
    Location : Pittsburgh, PA

    thermistor? Empty thermistor?

    Post by natoe on Wed May 12, 2010 2:29 pm

    I had received a thermistor off of kevin from dynakit parts and had a brain fart on how to install this in series in the amp power cord section?

    It's been a really bad week.

    thanks pete

    Posts : 233
    Join date : 2009-02-04
    Age : 69
    Location : Texas

    thermistor? Empty Re: thermistor?

    Post by Luddite on Wed May 12, 2010 3:25 pm


    I just used a couple of extra lugs on the terminal strip. I soldered the thermistor between the lugs, soldered the neutral lead of the power cord to one of these lugs, and soldered one of the power transformer primary (black) leads to the other lug. That places the thermistor in series with the AC input. BTW: you can install the thermistor in either the neutral or hot AC lead. I chose the neutral for convenience sake.

    Best Regards,

      Current date/time is Thu Feb 27, 2020 11:18 pm