...@febo.com
Date: Wed, 6 Apr 2011 11:00:01
To: time-nuts@febo.com
Reply-To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: [time-nuts] Transmission line question
Hello,
If I have a pin with two 50 ohm lines leading in opposite directions from
its land
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
25 Ohms.
John WA4WDL
--
From: Don Otknow donald.otk...@gmail.com
Sent: Wednesday, April 06, 2011 2:00 PM
To: time-nuts@febo.com
Subject: [time-nuts] Transmission line question
Hello,
If I have a pin with two 50 ohm lines leading in opposite
To: time-nuts@febo.com
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
--
From: Don Otknowdonald.otk...@gmail.com
Sent: Wednesday, April 06, 2011 2:00 PM
To:time-nuts@febo.com
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
impedance device like a PIN sees ??
Alan G3NYK
- Original Message -
From: Greg Broburg semif...@comcast.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, April 06, 2011 8:59 PM
Subject: Re: [time-nuts] Transmission line question
sounds like
Just for the record I meant pin as in the metal contact of a device, not a
PIN diode. So I need the impedance the pin see's (that of the transmission
line(s)) to be the same as the output impedance of the pin.
Here's an extrapolation on the original question. If this is a high speed
digital
Oh dear it looks like the diagram got horribly screwed up. Well I hope you
get what I'm trying to communicate anyways.
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Sent: Wednesday, April 06, 2011 11:05 PM
Subject: Re: [time-nuts] Transmission line question
Just for the record I meant pin as in the metal contact of a device, not a
PIN diode. So I need the impedance the pin see's (that of the
transmission
line(s)) to be the same as the output
Don,
If it were a perfect world and the two 100 Ohm loads were perfect (no
reactances), then you will have a complete transfer of power from the 50 Ohm
source divided equally into the two 100 Ohm loads without reflections.
BillWB6BNQ
Don Otknow wrote:
Just for the record I meant pin as in
Well actually there's another level here which is that some of the
lines are bidirectional data lines - each device at the end of the
lines will occasionally drive these. However one of the devices (lets
call it device A) can request a wait from the center device via a
separate line so it should
On 04/07/2011 12:55 AM, Don Otknow wrote:
Well actually there's another level here which is that some of the
lines are bidirectional data lines - each device at the end of the
lines will occasionally drive these. However one of the devices (lets
call it device A) can request a wait from the
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