grounded grid

[JoaMat]

I think a delay of 50 - 60 seconds is a good idea.

[G600]

Copied.

It's going to complicate my thing a bit.

[ang728]

12 hours ago, kevin gilmore said:

where did you get the delay board?

 

bought them form china

https://goo.gl/LKTtXI

Edited March 20, 2017 by ang728

[G600]

Is there any way to delay a transformer secondary ?

I wanted to build the GG with a single transformer...

[JoaMat]

If you use GRHV supplies with “switch” – there are all kinds of supplies now days – it’s fairly easy to arrange a delay, even with a flashing led during pre-heat and steady in operation mode.

[jose]

I used on my carbon an arduino and a solid-state rele. I'm doing the same thing on this PSU.

[Pars]

On 3/19/2017 at 2:01 AM, joehpj said:

Semi-customized. The shape of front plate, depth, height, and heatsink was fixed. Others were customized.

I assume these cases are from China? Any hint as to who/where they are from?

Everytime I see one of your pics, I keep thinking I like those...

[joehpj]

On 2017/3/31 at 0:51 PM, Pars said:

I assume these cases are from China? Any hint as to who/where they are from?

Everytime I see one of your pics, I keep thinking I like those...

Those are indeed from China. I have some spare.......so PM me for detail if you are interested . 

[jose]

Has anyone used the 450 volt configuration?

I´m waiting for a Mouser´s BO and I can´t do nothing

[G600]

I'm building it with +-450V supplies.

Still a bit afraid of the possible short between B- connection and the feedback trace, like it happened to insanity's Carbon.

Edited April 8, 2017 by G600
precisions

[Whitigir]

Wow! How does it sound ?

[G600]

Not built, still waiting for the custom transformer, and a bigger issue is the lack of a drill press and the related skills.

Still being a very young padawan in DIY. Need some more weeks before completion.

Edited April 8, 2017 by G600

[Whitigir]

Anyone has spare boards laying around  ? Very interesting in it, please PM me

[jose]

7 hours ago, G600 said:

Not built, still waiting for the custom transformer, and a bigger issue is the lack of a drill press and the related skills.

Still being a very young padawan in DIY. Need some more weeks before completion.

Yes, I´m waiting for two trafos too.

TS300VA PRI: 230V

> 2x360V @350mA

> 18-0-18V @600mA

And:

TS50VA PRI: 230V SEC:

> 6,3V @8A

 

I don´t think that you have problems again if you use the "top" board (tube side) for put the conector.

[Whitigir]

Thanks Soren for the boards! Something fun and exciting in the future 

Edited April 9, 2017 by Whitigir

[G600]

Drill press madness...

[sorenb]

12 minutes ago, G600 said:

Drill press madness...

 

are the 10m90 at the BIAS/PSU mounted using insulation washers - doesn't look like ?
Can see you are using nylon for those at the amp board ;o)

[G600]

For sure !

I use the RENY screws I have left from the T2, with spring washers over standard washers. Outstanding stuff from Chemis.

The steel screw you can see just holds the board in place.

Edited April 10, 2017 by G600

[Whitigir]

Nice going, I can not wait to hear your impressions between GG and T2

[G600]

Received the transformer today.

Didn't imagine such a big boy. But perfectly built.

Changing plans for casing, unless it won't fit.

Despite some mistakes and need of adjustment (make the tubes symmetrical for sure), you get the idea : 

Edited April 12, 2017 by G600

[Whitigir]

Woaaaa, that is an elephant in the room ! Not Sumr ?

[bbest]

7 hours ago, G600 said:

Received the transformer today.

Didn't imagine such a big boy. But perfectly built.

Changing plans for casing, unless it won't fit.

Despite some mistakes and need of adjustment (make the tubes symmetrical for sure), you get the idea : 

Enormouse size! Very interesting, what it is dimensions and weight ...

[G600]

140*70 cm, 5 Kg roughly

And not Sumr, but British one-man company with stellar products.

[jose]

Nice work G600 I can not see the tag of your trafo but I have one question: EL34 uses 6.3vol @ 1.5A, if you use four EL34= 6.3vol @ 6A.

Your trafo only have 4.5A current so I understand that your transformer goes very low in amperage.

 

Edit: Sorry, it´s 2x 6.3volt @ 4.5A

Edited April 13, 2017 by jose

[G600]

GRLV @+-15V

GRHV @ +459 and +464V

Waiting for a few more passive before starting to wire the Thing.