Am I missing something?? Surely it depends on whether the lines are terminated otherwise by the time time a pulse has travelled to the end and back they will be a complex impedance and will be frequency dependent ....2 open stubs ?? If terminated then 25 ohms, but why does it matter what a high impedance device like a PIN "sees" ??
Alan G3NYK ----- Original Message ----- From: "Greg Broburg" <[email protected]> To: "Discussion of precise time and frequency measurement" <[email protected]> Sent: Wednesday, April 06, 2011 8:59 PM Subject: Re: [time-nuts] Transmission line question > sounds like an application for a simple power splitter > on the board. > > Greg > > On 4/6/2011 12:52 PM, paul swed wrote: > > Its would be 25 ohms if both lines are 50 ohms and 0 reactence. > > > > > > On Wed, Apr 6, 2011 at 2:07 PM, jmfranke<[email protected]> wrote: > > > >> 25 Ohms. > >> > >> John WA4WDL > >> > >> -------------------------------------------------- > >> From: "Don Otknow"<[email protected]> > >> Sent: Wednesday, April 06, 2011 2:00 PM > >> To:<[email protected]> > >> Subject: [time-nuts] Transmission line question > >> > >> > >> Hello, > >>> If I have a pin with two 50 ohm lines leading in opposite directions from > >>> its land (let's say they are arbitrarily long so as to truly look like 50 > >>> ohm lines), what is the effective impedance that the pin sees? > >>> > >>> Thanks, > >>> Donald > >>> _______________________________________________ > >>> time-nuts mailing list -- [email protected] > >>> To unsubscribe, go to > >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > >>> > >>> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
