- Posted by gluca (A) on June 14, 2008 at 05:42:37
In Reply to: RE: PP EL34 amplifier with UL driver posted by KevinC on June 12, 2008 at 16:33:18
I think I am liking the idea more and more. The idea bounces in my mind but with direct coupled stages. Maybe more CCS and heatsinking (or a substantial tube) would be required under the EL34s as we need to raise the voltage under the cathodes and the PSU needs to be revisted for the purpose... but this is an amp I'd like to play with.
Are those UL chokes going to be wound somehow/sometime Mike?
Gianluca
Follow Ups:
- revised EL34 RC coupled with CT UL plate choke - mqracing 22:44:01 06/18/08
(3)
- In Reply to: RE: Great! posted by gluca on June 14, 2008 at 05:42:37
Builder of MagneQuest™ & Peerless™ transformers since 1989
- Hi Mike, I'd like to try that as well. So if you can... - Bas Horneman 14:30:23 06/19/08
(0)
- In Reply to: RE: revised EL34 RC coupled with CT UL plate choke posted by mqracing on June 18, 2008 at 22:44:01
please put me on the list.
To infinity and beyond!!!
- COOL! - Uncle Clyde 11:49:02 06/19/08
(0)
- In Reply to: RE: revised EL34 RC coupled with CT UL plate choke posted by mqracing on June 18, 2008 at 22:44:01
Could I adapt a 10w, 8K, open-framed PP, output transformer (with the secondaries not connected)? Would I need to create a gap?
How critical would the primary winding and core size be to over-all freq. response?
Clyde
- BAAAM! - gluca 00:59:15 06/19/08
(0)
- In Reply to: RE: revised EL34 RC coupled with CT UL plate choke posted by mqracing on June 18, 2008 at 22:44:01
Wind it, wind it, wind it, wind it, wind it
w
i
n
d
i
t
wind it, wind it, wind it, wind, it, wind it
Was my message clear enough?
- Hi Mike, I'd like to try that as well. So if you can... - Bas Horneman 14:30:23 06/19/08
(0)
- Ruminations - gluca 13:14:35 06/18/08
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- In Reply to: RE: Great! posted by gluca on June 14, 2008 at 05:42:37
Just to make it more clear... I drafted the idea and here is what I was thinking at
Mike,
a UL interstage tranny as per Kevins schematic (with two separate indipendent windings at the secondary) would wonderfully fit into my new project: a hybrid amp with a differential tube stage and mosfets at the output arranged a la circlotron by electrovoice. I met the builder of such an amp (there is only one in the world) and I had the chance to listen to it ... I do need to build it, it was astonishing (for bass freqs).
Keep us posted.
Ciao
Gianluca
- gian, jim, and nc..... - mqracing 21:36:05 06/16/08
(0)
- In Reply to: RE: Great! posted by gluca on June 14, 2008 at 05:42:37
I'll get back to you guys--- I have a revised schematic I want to put up--- with a slightly different tact on doing the UL tapped plate choke. give me a day or two to get caught up on some orders and some other pressing domestic matters---
but--- I too would like to see some of these ideas field tested and field optimized--- and I think I will have some good experimental iron for you brave pioneers.
So--- keep your eyes open--- I'll try to get the revised schematic up over the next day or two.
MSL
Builder of MagneQuest™ & Peerless™ transformers since 1989
Edits: 06/17/08 - cool - Jim Dowdy 15:29:27 06/14/08
(1)
- In Reply to: RE: Great! posted by gluca on June 14, 2008 at 05:42:37
Put me down for a pair of those UL chokes.
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