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Re: Homemade LISN

 

On Thu, 26 Jan 2023 at 19:55, Jeff Green <Jeff.L.Green1970@...> wrote:

I detailed my experience with a piece of test equipment to measure the RF on our residential AC mains.


Thank you.?

The assumption is "AC mains exhibit an impedance of 50 ohms." This is a false assumption, and, if there is interest, I'll post some graphs from a study of AC mains impedance in the files section.


It would be very specific to individual circumstances though.?


I chose to go with the design shown at:

I used two BN 73-202 binocular cores with a 6:6 turns.


There¡¯s some writing on the left hand side. I originally thought it was 215 cm + 501 dm. Then it looks a bit like an integral. ??


This has been very educational project and it appears the FCC/EU/British Telecom doesn't even pay lip service to conducted EMI limits.


Thank you for sharing this.


Dave?

--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@...

Telephone 01621-680100./ +44 1621 680100

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