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-   -   Oh no...not another Baby Huey EL84 build. (https://www.diyaudio.com/forums/tubes-valves/351919-oh-baby-huey-el84-build.html)

Bas Horneman 30th March 2020 09:21 AM

Oh no...not another Baby Huey EL84 build.
 
2 Attachment(s)
To prevent me from soiling the GB thread GB for Baby Huey PCB I'll be posting assorted pics here regarding my build.

The rounding of the board and the thickness makes for a very nice looking board.

Bas Horneman 30th March 2020 09:24 AM

I've decided to use schottkeys for at least the bias supply diodes. Perhaps also for the main psu rectifiers.

https://www.st.com/resource/en/datasheet/stpsc2h12.pdf

They do need some bending to fit. And I'll have to devise something so they don't touch each other. Should be no problem if I check after assembly if they don't touch.

Bas Horneman 30th March 2020 09:46 AM

1 Attachment(s)
Power supply capacitor under the board done because of proximity to one of the output valves....too close for comfort regarding heat.

prasi 30th March 2020 02:57 PM

Hello Bas, Pl check the pins of tube against schematic.
I am not sure if marc (bandol83 ) intended to populate them from bottom side .

regards
prasi

Bas Horneman 30th March 2020 04:16 PM

1 Attachment(s)
Quote:

I am not sure if marc (bandol83 ) intended to populate them from bottom side .
Hi Prasi,

I populated the sockets from the top.

You gave me a big fright now. :D

I used this picture as my guide. But looking at the pcb I have in my hand....and the sockets....and the pcb tracks.... all looks good.

prasi 30th March 2020 05:07 PM

That looks good! Extremely Sorry to have given you a fright.

It was for the EL34 MK2 that marc intended to fit the tube from bottom.

All the best for build and listening.

Bas Horneman 30th March 2020 09:58 PM

No worries Prasi. I could have made the mistake...and then it would have been great to know before....

Kind regards,
Bas

Bas Horneman 1st April 2020 11:13 AM

2 Attachment(s)
Almost done. Just waiting for my coupling caps. One cleaned. One to go.

Bas Horneman 1st April 2020 11:14 AM

1 Attachment(s)
My bias schottkey rectifier assembly just to prevent them from shorting...Just to be safe.

Ketje 1st April 2020 01:14 PM

Quote:

Originally Posted by Bas Horneman (https://www.diyaudio.com/forums/tubes-valves/351919-oh-baby-huey-el84-build-post6143101.html#post6143101)
My bias schottkey rectifier assembly just to prevent them from shorting...Just to be safe.

Nice solution :)
But couldn't you find any bigger diodes for 10mA rectified current ? :D
Mona


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