As some of you mite remember some time last year I bought a 10mA RCD socket to protect my test/workbench sockets when it arrived I fitted a beefy length of flex to it with a plug on and set it up in position great so far. One of the items plugged in is a frequency counter which I always have on when I'm using my ham radio transmitter it all worked well when I was on 14 Megs and on 7 Megs however when I was on 3.7 Megs the RCD would trip. Disaster! After a bit of head scratching and un lady like language I fitted a mains filter between the RCD socket and the bench socket boards this fixed the problem but weirdly now if I don't have the counter on (I forgot it by chance one day) it now trips whatever band I'm on but all is ok with the counter on. The reason I'm sharing this is because if any of you get trouble with electronic trips then a mains filter mite help not easy to add in a DB I know but thought ide share anyway
A mains filter connects electronic components L. to N., L. to E. and E. to N. internally I believe and causes some earth leakage in the process. This may trip off a sensitive R.C.D. especially if there is other leakage from other equipment and/or the radio equipment induces trip currents into the R.C.D. as well.
Z>
I learnt something today, had never heard of a "mains filter". Is a mains filter potentially dangerous on a PME supply due to Open PEN risks?
When is using a mains filter required? As a radio ametuer keen to understand use cases in a radio shack context too pls.
A mains filter connects electronic components L. to N., L. to E. and E. to N. internally I believe and causes some earth leakage in the process. This may trip off a sensitive R.C.D. especially if there is other leakage from other equipment and/or the radio equipment induces trip currents into the R.C.D. as well.
Z>
I learnt something today, had never heard of a "mains filter". Is a mains filter potentially dangerous on a PME supply due to Open PEN risks?
When is using a mains filter required? As a radio ametuer keen to understand use cases in a radio shack context too pls.
