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-   -   new sse build choosing parts (http://www.diyaudio.com/forums/tubelab/227026-new-sse-build-choosing-parts.html)

rock12 4th January 2013 11:45 AM

new sse build choosing parts
 
I am using the big edcors xpwr035 and cxse 25-8-5k and there 10 henry choke cxc125-10h-200ma. I get a little lost in the tube chart I think my load impedance is 5k but onsure of my primary voltage. I also get lost on some of the abbreviations. I have read some of the swithable resistor posts and would like to try them

rknize 15th January 2013 08:44 PM

You have the exact same config as mine. You need help selecting the cathode resistors? What tubes do you want to use?

rock12 23rd January 2013 10:03 AM

I plan to roll tubes with a 6 way switch from other posts At the moment a siemans NOS el34 new tung-sol 6l6gc for startup and sovtec 5ar4 about 5 types of 12at7. thanks for all your help on the web

rknize 23rd January 2013 02:32 PM

No problem. If you can't make out the values of the resistors on my site, I can dig up the spreadsheet that I used to come up with the values. I should probably just post that on the website.

spendorite 23rd January 2013 02:40 PM

Quote:

Originally Posted by rknize (Post 3327533)
You have the exact same config as mine. You need help selecting the cathode resistors? What tubes do you want to use?

I'll be ordering the same Edcor transformers - xpwr035, cxse 25-8-5k outputs
and the 10 henry choke cxc125-10h-200ma.

I'll start out with a basic triode setup using EL34 tubes and a single bias
resistor then later on I'l add other options such as UL/Triode and selectable
bias resistance.

Should I go with the 560ohm resistor in the basic setup with EL34 tubes or
use a higher resistance ?

When I want to go with selectable bias using a rotary switch what resistor
values should I get ? The tubes I'll be using EH KT88, Tung Sol reissue
6L6G, reissue Gold Lion KT66 and nos 6V6G.

rmyauck 23rd January 2013 09:24 PM

spend,

EDCOR - XPWR035-120

To high a B+ with that PS trans for a 6V6 I believe!

Simple SE board

Quote from George from this thread: "My second SimpleSE has an Allied 6K56VG power transformer. The B+ is 320 volts. 6V6's live here."

http://www.diyaudio.com/forums/tubes...-simplese.html

Maybe add that small trans. with a switch!

Have fun!

Randy

spendorite 23rd January 2013 11:07 PM

Quote:

Originally Posted by rmyauck (Post 3339387)
spend,

EDCOR - XPWR035-120

To high a B+ with that PS trans for a 6V6 I believe!

Simple SE board

Quote from George from this thread: "My second SimpleSE has an Allied 6K56VG power transformer. The B+ is 320 volts. 6V6's live here."

http://www.diyaudio.com/forums/tubes...-simplese.html

Maybe add that small trans. with a switch!

Have fun!

Randy

Thanks Randy. It just shows my ignorance of these details, so I'll just not
use 6v6 tubes in the SSE. I have a 6v6 push-pull amp and was thinking I
could use some of my spares in the SSE.

Spoon109 23rd January 2013 11:38 PM

I found this website mentioned somewhere on the forum when I researching the switchable cathode resistor values. I have not actually done it yet. Its to cold in the garage right now. It will have to wait until spring...

Resistors In Parallel Calculator PARALLEL RESISTOR CALCULATOR

spendorite 23rd January 2013 11:55 PM

Quote:

Originally Posted by Spoon109 (Post 3339540)
Its to cold in the garage right now. It will have to wait until spring...

Same here, I'll have to wait until spring to start my build. In the mean time
I'll be getting the parts to populate the pcb.

rknize 24th January 2013 02:10 AM

Quote:

Originally Posted by spendorite (Post 3338847)
I'll be ordering the same Edcor transformers - xpwr035, cxse 25-8-5k outputs
and the 10 henry choke cxc125-10h-200ma.

I'll start out with a basic triode setup using EL34 tubes and a single bias
resistor then later on I'l add other options such as UL/Triode and selectable
bias resistance.

Should I go with the 560ohm resistor in the basic setup with EL34 tubes or
use a higher resistance ?

When I want to go with selectable bias using a rotary switch what resistor
values should I get ? The tubes I'll be using EH KT88, Tung Sol reissue
6L6G, reissue Gold Lion KT66 and nos 6V6G.

I've posted the spreadsheet that I used to come up with the values on my website. Here is a direct link:

http://www.knizefamily.net/russ/elec...calculator.ods


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