Quote Originally Posted by jneutron
Yah, that's why I questioned the milli as a typo, I would believe micro...

Absolutely.

I have learned a lot since first embarking on the skin effect stuff. Ways to make the load resistor much lower in inductance (although even the one I built already is far below my measurement capabilities). I have lost the ability to measure the loads reliably anymore using any commercial inductance meter, so am working out a scheme to measure them using the HP 3225A synthesizer, and looking for the V/I phase shift. Unfortunately, it only goes to 60 Mhz, so I'm afraid I'll just have to live knowing I can't meet the expectations of high end audio...:-) And, I'm considering making a pulse welder out of some big caps, lots of mosfets, and some timing circuits, as making the previous load required soldering 39 resistors to a tube simultaneously...one shot welding with some fixturing will allow me to easily duplicate the final design.

That darn Nordmark paper...pushing my test requirements up over a Mhz...oh well..

Oh, BTW...Bruno thought it was my turn to talk, we were both waiting for e-mails..

He also has a large queue, so looks like I better get that attic finished soon..

Cheers, John
Great update. I am glad one of you emailed again instead of waiting to the end of times

I will be satisfied with a low fi report, 60mHz is fine with me. You can quote me on it too

Don't you have some lab quality measuring gear at work? How about the Standards Org. Tell them you need help