Larry,
Note that there are only 3 transformers physically on the KIO3 board
(not 6). So only one is used of each pair shown on the schematic. Note
that one set is labeled as "ALT" meaning alternative.
For that application, the phase is not critical, except that the stereo
channels must match.
Why it is represented that way on the schematic, only the designer can
answer. I am certain it has something to do with the schematic to board
layout program that was used.
73,
Don W3FPR
On 4/8/2014 8:51 AM, Larry Lopez wrote:
The K3 has isolation transformers for the line input (mono),
and line output L and line output R (stereo).
There are 3 sets of 2 transformers.
In each set, the circuit diagrams shows the transformers
in parallel with opposed phase.
Please see the K3 Circuit diagram KIO3 Main Sheet 2,
top left quadrant.
one of each pair is labeled TTC-108 600 ohm line transformer 1.5 KV
isolation,
the other of each pair is labeled LM-NP-1001 600 ohm line transformer, 6.5
KV isolation.
I'm going to take a stab at explaining this.
I bet only one transformer or the pair is actually used.
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-line-in-line-out-transformers-tp7586831.html
Sent from the Elecraft mailing list archive at Nabble.com.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
