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sbelyo

2018 PCB Group Buy with TKD pots

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Hi All..

I accidentally deleted the old thread just now, whoops!  Can everyone post the boards they want here in this thread as I start over.  I'll also inquire about pots from TKD through a US distributor.

This was the old spreadsheet https://docs.google.com/spreadsheets/d/1Z1L3MQuuY4ZTUyPQb1qBmVJp8MtC7qEzBUui3z5dFrQ/edit#gid=0

Attached are all the boards except the unbalanced to balanced tube bottom mount

Bridge_Vert.zip

cfp2hmt.zip

circlotronhvpowersinglenewver3swt.zip

goldenreference6d.zip

grhv100v.zip

kgbhver6sbipolar.zip

kgsshvpssicfetsinglenewleftfatsws.zip

kgsshvpssicfetsinglenewrightfatsws.zip

TKD 4CP 3 pot final.zip

THAT340- SOT23.zip

that340.zip

THAT340-J109-K389-JFET.zip

that340lsk.zip

SuperSymmetryDynalo-TDK-v1-5.zip

ubaltoblatubeschem2.zip

gg.zip

kgsshvcarbonv6ground2.zip

Edited by sbelyo
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Don’t forget CFP2. Also, I would like a GRLV version that supports multiple outputs, SiC rectifier diodes, and larger (30mm min, 35mm great) caps. I don’t think this has been laid out yet (close). Props for supporting both Phoenix 5.08mm and Molex KK 2.54mm connectors on the outputs.

 

 

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In talking with cspirou (sp?), you may want to rethink the 3 oz. copper on the mini board. Kerry’s prototype was done using 1 oz. copper and he didn’t think it needed heavier. The 3 oz. boards aren’t much fun to solder on, particularly when you consider that the majority of the pins on the regulators go to ground. Just sayin’

 

 

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noted...  I wasn't going to attempt the regulators lol.  Was going to use AMB regs for now.  

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So which boards are you considering in this group buy?  All that are listed in the spreadsheet, or just some of them?  

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CFP2 is CFA (current feedback amp), right?  Much different from Dynahi?  I already have the Dynahi, wonder if it would be just a duplicate to build the CFP2.     

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So which boards are you considering in this group buy?  All that are listed in the spreadsheet, or just some of them?  

I’ll include any board you want. I just put the old spreadsheet up there so I didn’t lose it. I’ll edit it later today

 

 

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I would like a dynalo mini and 2 GRLV please. I understand you are also going to try to get the TDK pots for the dynalo mini?

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Interested in boards for carbon (electrostatic) and balanced CFA (dynamic) builds. Already have GRHV so need several GRLV, carbon set and CFP2's.

Could also use some attenuators for these.

Edited by steefdebruijn

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I'm interested in HV900 single V2's for the Circlotron. Not sure how many other people are looking at building but they're 4x of the same board for a set so hitting minimums should be a little easier.

Edited by Tinkerer

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Spreadsheet is now open...  Fill in your ID and amounts

So far it's just the boards that have been mentioned above.  Pay no attention to the copper and thickness for now, I'll adjust it.  Feel free to post what you want here.

I'll add a spot for TKD pots once I talk to the distributor.  The Dynalo mini board uses 4CP-601 10K with audio taper.  Does anyone want another model?

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Note that TKD offers variable potentiometers and variable attenuators and they are not the same thing. For the group buy I did I had variable attenuators. They will both work fine with the Dynalo Mini.

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I was reading through all that and was about to ask you...  I'll use what you had before.  What's the difference between the 2500 and 2511?

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Probably not much interest to most here, but can you ask the distributor if they have motorized versions of the 600/2500? Or just let me know what US distributor you are using. The distributors on the TKD website seem long out of date. They have Song Huei listed as a Taiwan distributor, so I emailed them and they said they don't sell TKDs. Sellmark is listed in the US and it doesn't even seem like it's operating anymore. 

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Probably not much interest to most here, but can you ask the distributor if they have motorized versions of the 600/2500? Or just let me know what US distributor you are using. The distributors on the TKD website seem long out of date. They have Song Huei listed as a Taiwan distributor, so I emailed them and they said they don't sell TKDs. Sellmark is listed in the US and it doesn't even seem like it's operating anymore. 

I was going to contact sellmark. Last email I have from them is in 2016. Are there others?


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26 minutes ago, sbelyo said:

I was reading through all that and was about to ask you...  I'll use what you had before.  What's the difference between the 2500 and 2511?

2511 seems have more range. 315 vs 300 degrees for the 2500

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1 hour ago, sbelyo said:


I was going to contact sellmark. Last email I have from them is in 2016. Are there others?


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In that case, maybe they are still operational? All I know is I can't find a website and SH is a dead end, did not actually try emailing sellmark. pcx seems to sell 2 channel TKDs, maybe they can order some 4 gangs?

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I remember Kevin posted something about pcx.  They wanted a 100 piece minimum or something like that.  I've got two email addresses for Sellmark.  Going to try them both

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