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Tubelab Discussion and support of Tubelab products, prototypes and experiments

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Old 12th October 2017, 02:23 PM   #1
Cifte12AU7 is offline Cifte12AU7
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Default A few questions before I begin on the SSE

Hi All!

First off, let me say that this forum is super helpful as it's chocked full of information and data.

I have a few questions that I was hoping folks could answer before I get cracking on the Tubelab SSE.

1. Choke. I am leaning toward using a choke. Is this choke sufficient or overkill? Fixed Hammond 193J 10H 200MA.

193J Hammond Manufacturing | Mouser

I do not plan on using the amp with very sensitive loudspeakers.

2. What gauge and type of wire do folks recommend using for spots where I will need to jump two points (e.g. solid state tube rectifier switch (SW1), as I'll be rectifying by tube only) or where I'm adding something in like a supplemental power supply capacitor?

3. What values/tolerances are ideal for the supplemental power supply capacitor?

For a Power Transformer, I'm using an Edcor XPWR059 (Primary (Input) Voltage: 120Vrms or 240Vrms, 50/60Hz.) For Output Transformers, I'm using Edcor CXSE25-5K (Secondary (Output) Impedance: 6 Ω).


Thank you in advance for any help you can provide!
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Old 12th October 2017, 03:20 PM   #2
PDL is online now PDL  United States
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That choke will be fine. 18 AWG will be fine for hook-up wire, make sure the voltage rating is adequate. UL AWM 1032 or UL AWM 1015 is a good spec for insulation.
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Old 12th October 2017, 03:41 PM   #3
zman01 is offline zman01  Bangladesh
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A few questions before I begin on the SSE
This should work too:

C-14X Triad Magnetics | Mouser

But open frame, you can get a cover or opt to put it underneath the top (inside the chassis).
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Old 12th October 2017, 06:00 PM   #4
Cifte12AU7 is offline Cifte12AU7
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Thank you Zman01 and PDL!

Any recommendations on the specs of the supplemental power supply capacitor? I'm having trouble figuring out what to buy.
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Old 12th October 2017, 08:00 PM   #5
colnago55 is offline colnago55  United States
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Here's a 100mdf motor run capacitor that has been recommended by others. I've used it in several tubelab projects

TEMCo 100 MFD uF Run Capacitor 440 vac Volts AC Motor HVAC 100 uf | eBay
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Old 12th October 2017, 09:50 PM   #6
Cifte12AU7 is offline Cifte12AU7
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Thank you Colnago55!

Do you folks think this wire would suit me for hookup wire? https://www.remingtonindustries.com/...5-length-each/

Sorry to be a pain. I just appreciate the experience everyone has of having done this and probably being more skilled than I am.
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Old 13th October 2017, 01:35 PM   #7
PDL is online now PDL  United States
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That wire will work well. That's nice little kit of hook-up wire.
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Old 13th October 2017, 01:44 PM   #8
zman01 is offline zman01  Bangladesh
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A few questions before I begin on the SSE
Quote:
Originally Posted by Cifte12AU7 View Post
Sorry to be a pain. I just appreciate the experience everyone has of having done this and probably being more skilled than I am.
No pain, please keep on asking we've all had help from the kind folks of the forum.
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Old 13th October 2017, 02:29 PM   #9
Cifte12AU7 is offline Cifte12AU7
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You guys are the best! Thank you sooooo much!
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Old 14th October 2017, 04:06 PM   #10
Tubelab_com is online now Tubelab_com  United States
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Quote:
Here's a 100mdf motor run capacitor that has been recommended by others
.

Thanks, I ordered a couple for future projects.
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Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
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