K&K Audio / Lundahl Transformers

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100TH output transformer

213.93.7.199
Posted on December 11, 2015 at 10:01:45
tungsram
Audiophile

Posts: 7
Location: nl
Joined: January 24, 2012



I have a couple of 100TH Eimac tubes and would like to build a Se amp with them.
Does Lundahl have a output transformer thats suits the attached schematic ?

 

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RE: 100TH output transformer, posted on December 11, 2015 at 12:25:35
KevinC
Manufacturer

Posts: 2984
Location: NC
Joined: April 19, 2001
 Do you have any idea what the plate impedance of the 100TH is at your operating point?

Kevin Carter
K&K Audio
www.kandkaudio.com

 

RE: 100TH output transformer, posted on December 11, 2015 at 14:10:31
tungsram
Audiophile

Posts: 7
Location: nl
Joined: January 24, 2012
 I have no idea ! Can not find a decent data sheet to determine the plate impedance .
Hope that someone can help me out !!

 

RE: 100TH output transformer, posted on December 13, 2015 at 07:23:25
FlyCast
Audiophile

Posts: 65
Location: New Haven
Joined: September 5, 2015
 Link attached. It has the load lines in triode mode

 

RE: 100TH output transformer, posted on December 14, 2015 at 14:10:37
Ed Sawyer
Audiophile

Posts: 2595
Joined: November 3, 2000
 Almost guaranteed this is an A2 amp with positive grid current (looks like a shishido type design or maybe one of those other guys that like the A2 tubes) so unless you have the ITs in hand to handle that (NC-14 looks like a Tango number) it might be a difficult project. The tubes are the easy part. ;-)

 

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