Hi rfi-experts, just came across an advertisement of a common-mode choke produced by RF-inquiry of Japan. They claim to provide at least 50 dB of reduction of common-mode-currents. There exists two v
Sounds like a lot to me also. I can make receiving CM choke systems that are over 40dB at one frequency range, but I doubt anyone can do that over wide bandwidths without a pi-section and isolated g
By the way, if the common mode source and load impedances are a fraction of an ohm it is easy to obtain -50dB. If the common mode source and load impedances (which have nothing much to do with line
Normally a 50 Ohm load is used. Refer to CISPR 16 ( A highly overpriced standard to which most all RF measurements are made.) "Tom Rauch" <w8ji@contesting. To: <rfi@contesting.com>, "Christian Buenge
Tom Rauch wrote, in response to: just came across an advertisement of a common-mode choke produced by RF-inquiry of Japan. They claim to provide at least 50 dB of reduction of common-mode-currents. I
of Standard schmandard. People can measure things like this any way they like. I use a 50 ohm network analyzer that has a 50 ohm source and load, but some CE tests or "do it yourself" tests use othe
What the hell, If you got the cash I got the stamp. "Tom Rauch" <w8ji@contesting. To: "Ian White, G3SEK" <g3sek@ifwtech.co.uk>, <rfi@contesting.com> com> cc: Sent by: Subject: Re: [RFI] Experience wi
Tom has hit this nail straight on the head (as usual). The problem is comparable to measuring the filtering characteristics of power line filters -- neither the standards for measurement nor the avai