Joop, The cap is isolate any DC from the transformer, The manual for TADD-1 has this iformation at the TAPR site has this manual http://www.tapr.org/~n8ur/TADD-1_Manual.pdf.
On Wed, Jul 21st, 2010 at 9:46 PM, Joop <l...@xs4all.nl> wrote: > Hi, > > I noticed in several circuits that the 10MHz isolation transformer in > input and output circuits have a 6.8nF or 10nF capacitor to GND. How > necessary is this for suppression of unwanted signals? Is the > transformer itself not sufficient? I would expect common mode issues to > be a bit worse with the cap in place. > > The circuit I refer to can be seen here: > http://www.uploadarchief.net/files/download/cap2gnd.png > > The first one is an output as described in the Efratom FRK manual, the > second one the input in the TADD-2 manual. > > Cheers, > > Joop > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
