GB for Baby Huey PCB

[prasi]

2 EK34MK2, 4 EL84 and 6 PSU please!

thanks for the interest. invoice sent based on info i already had from a previous gb.

 

[Kokanee]

I have 4 x BHEL34 pcb & 4 x BH MK2 PS pcb for sale on the Swap Meet forum. Check it out and also Class AB & Class A pcb and kits in separate threads I have for sale. Good prices. Thanks for the interest. Posted with Prasi permission.

Regards,

Myles

 

[tsetse1986]

Thank you Prasi, 2 x EL34 BH and 2 x PSU pcbs arrived today in good order.

Cheers,
Tim

 

[prasi]

Thanks Tim,
For the confirmation. Its amazing that even in these times , postal dept is working round the clock.
Hats off!!

regards
prasi

 

[Kokanee]

My 2 x EL84 and 4 x EL34 pcbs are for sale again. I also have 4 x BH MK2 PS for sale. Listed in Swap Meet. PM me if interested.

MM

 

[RafterA]

I received my EL84 boards today. As usual, nice looking boards that arrived in good shape.

Thank you Prasi.

Regards,

Hugh

 

[Francois G]

I received my PCBs. Thanks so much. Nice picture of you on my package! Any word from Marc?

 

[prasi]

I received my PCBs. Thanks so much. Nice picture of you on my package! Any word from Marc?

thanks guys for confirmation.
Yes, Marc is recovering and hopefully he will be back here soon.

 

[MShipmanPE]

Package received. Thank you.

 

[Bas Horneman]

Received the PCB's thanks Prasi! Love the thickness of the boards!

 

[Bas Horneman]

I have my first questions about the board though. Not sure this is the right thread. But R16 on the board says value 1.6k but on the schematic V1.6 it says 15k (I ordered according to the schematic)

 

[RafterA]

R16 was changed to 47 k in message 575 (page 58) of the EL34 Baby Huey Amplifier thread.

The most recent BOM that I see is in message 611 (page 62) of that same thread, and it shows the 47 K resistor value for R16.

 

[Bas Horneman]

Thanks for trying to help RafterA. But that was a version 1.5. The board is based on 1.6.

It looks like I'll have to sift through the whole thread and checkup on certain values.

For instance:
Schematic says 10k for R17. Silkscreen print on pcb says 1k.
Schematic says 560r for R18. Silkscreen print on pcb says 1k.

 

[Bas Horneman]

Something completely different. I noticed there is no referencing of the heater to ground on the pcb itself? Is this correct?

 

[prasi]

R16 was changed to 47 k in message 575 (page 58) of the EL34 Baby Huey Amplifier thread.

The most recent BOM that I see is in message 611 (page 62) of that same thread, and it shows the 47 K resistor value for R16.

Hello Rafter, that bom on page 58 is for the Baby Huey EL34MK2.
And like you said, best to refer this post on page 62, post #611 Baby Huey EL34MK2.

EL34 Baby Huey Amplifier

Bashorneman is refering to Baby Huey EL84, which I will try to find out...

regards
Prasi

 

[Bas Horneman]

Bashorneman is refering to Baby Huey EL84, which I will try to find out...

I think the front end is the same for the EL34/EL84 amps. So the values should be the same for both types?

But I'm sure it will work with the values on the schematic 1.6. Just haven't been able to find explanations for the changes. I'm not a solid state guy or else I might understand the changes myself.

 

[Bas Horneman]

I posted the question as a general question on the board. One thing that I'm pretty confident about is the R18. Should be 1k. Not 560 ohm as in the 1.6 Schematic.

https://www.diyaudio.com/forums/tubes-valves/351870-check-values-current-source.html#post6138763

PS...My progress...

 

[Bas Horneman]

.

 

[Bas Horneman]

I spotted an error (on my part). The bias supply caps...one should be the other way around...plus and minus switched.

 

[Bas Horneman]

Splitting off my build to a seperate build thread: Oh no...not another Baby Huey EL84 build.