Re: LF: Rogowski-coils for RF measurements

[DK7FC <selberdenken@posteo.de>]

...now the coil is completed, see attachment.

Some first measurements:
Diameter:  0.3 m.
R (DC): 17 Ohm.
Inductivity (measured at ~ 1 kHz): 1.62 mH
Self resonance: 734 kHz

So far so good...

73, Stefan

Am 23.10.2018 15:13, schrieb DK7FC:
> ...now i started to build one, see attachment.
> Not yet sure how it will perform. DON'T bother me with calculations 
> telling it won't work! ;-)
> 73, Stefan
>
> Am 22.10.2018 15:04, schrieb DK7FC:
> > Hi all,
> >
> > Has someone ever build (homemade, not bought!) a Rogowski-coil for RF 
> > current measurements?
> > https://en.wikipedia.org/wiki/Rogowski_coil
> >
> > It could be used to measure leakage currents in a tower near the 
> > antenna wire for example. Or for measuring RF currents into a pole of 
> > a guide rail, for example :-)
> > I'm planning to build one and i thought i use 0.4 mm diameter 
> > enameled cu wire arround a graden hose, having 0.6m circumference. 
> > Then some shrinking tube will be applied. That's the plan.
> > The circuit looks easy, it should be run from a 9V battery and a 
> > simple TL081 for example. The output could be adapted to a 
> > multimeter, so there is a digital read-out.
> > I'm curious to see how it works...
> >
> >
> > 73, Stefan

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