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RE: PT that goes "boing" on cold starts

Could be the same magnetostriction effect that happens with a H/K Cit. 2.

In addition to the mechanical damping other posters have suggested, turn on surge control seems to be in order. I'm assuming vacuum rectified B+, Therefore, put a NTC inrush current limiting thermistor on the primary side of the power trafo. Select between a CL-90 and a CL-130, depending on the amount of current being passed.


Eli D.


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  • RE: PT that goes "boing" on cold starts - Eli Duttman 07:30:28 11/25/14 (0)

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