Re: High frequency impedance of a neon sign transformer

Hi all,
        I did some measurements on a 12kV 60mA unit last night. The
impedances I measured were somewhat higher than others I've read about
here :     f         1/2sec     full sec
         300kHz      11.5k       14.5k
         100kHz      29.8k       >50k
         10kHz       >50k
Measuring the full winding presented some difficulties as there are
several radio station antennas in the vicinity (the most powerful
is about 50kW. Grounding the case and measuring 1/2 the winding el-
iminated the fuzzies on the scope.
    Anyhow, that was a nice bit of work Ed. I should have done this
ages ago :(