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Oh no...not another Baby Huey EL84 build.
Oh no...not another Baby Huey EL84 build.
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Old 30th March 2020, 09:21 AM   #1
Bas Horneman is offline Bas Horneman  Netherlands
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Default Oh no...not another Baby Huey EL84 build.

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.
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Last edited by Bas Horneman; 28th April 2020 at 04:42 PM.
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Old 30th March 2020, 09:24 AM   #2
Bas Horneman is offline Bas Horneman  Netherlands
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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.
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Old 30th March 2020, 09:46 AM   #3
Bas Horneman is offline Bas Horneman  Netherlands
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Power supply capacitor under the board done because of proximity to one of the output valves....too close for comfort regarding heat.
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Last edited by Bas Horneman; 30th March 2020 at 09:49 AM.
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Old 30th March 2020, 02:57 PM   #4
prasi is offline prasi  India
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Oh no...not another Baby Huey EL84 build.
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
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Old 30th March 2020, 04:16 PM   #5
Bas Horneman is offline Bas Horneman  Netherlands
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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.

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.
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Last edited by Bas Horneman; 30th March 2020 at 04:21 PM.
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Old 30th March 2020, 05:07 PM   #6
prasi is offline prasi  India
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Oh no...not another Baby Huey EL84 build.
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.
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Old 30th March 2020, 09:58 PM   #7
Bas Horneman is offline Bas Horneman  Netherlands
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No worries Prasi. I could have made the mistake...and then it would have been great to know before....

Kind regards,
Bas
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Old 1st April 2020, 11:13 AM   #8
Bas Horneman is offline Bas Horneman  Netherlands
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Almost done. Just waiting for my coupling caps. One cleaned. One to go.
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Old 1st April 2020, 11:14 AM   #9
Bas Horneman is offline Bas Horneman  Netherlands
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My bias schottkey rectifier assembly just to prevent them from shorting...Just to be safe.
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Old 1st April 2020, 01:14 PM   #10
Ketje is offline Ketje  Belgium
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Quote:
Originally Posted by Bas Horneman View Post
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 ?
Mona
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