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
Stefan, See John Andrew's web page : http://www.w1tag.com/RFA.htm 73 Warren On Mon, Oct 22, 2018 at 9:20 AM DK7FC <[email protected]> wrote: Hi all, Has someone ever build (homemade, not boug
Hello Stephane! Maybe this could help you: http://www.uqac.ca/dsa/archives/projets/2010/conception/rapportFinal/RapFinal_2010-193.pdf (Limited to ~300 KHz) 73: Jeff F6CWN Le 22/10/2018 à 13:04, DK7FC
Stephan and all, You might be interested in the following, although not Rogowski type, a cut toroidal core, clamp-type, current transformer + rectifier. You need a high-impedance voltmeter. A normal
...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, Ha
Hello Stefan, I do sometimes wonder how many meters of copper wire you coil up in a given year, you must be a wire salesman's dream customer :) -- Best regards, Chris mailto:[email protected]
Hi Chris, This wire (exactly this piece of wire) has been used for the first version of the 900m long ground loop antenna some moths ago. Earlier, it was part of my large 6.1 H coil that i used on 29
Winding a flexible form like that, with no possibility of holding it in a drill chuck or similar, must be good for exercising the arm muscles. After winding my original 73kHz loading coil my arm ache
I think it should be possible to pull the hose onto a broomstick and then rotate that by a motor. But it is a better idea to wind it nearly in the shape as it will be when measuring (i.e. a circle).
...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
