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GB B1 Nutube PCB with integrated PS
GB B1 Nutube PCB with integrated PS
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Old 20th February 2019, 12:15 AM   #1
Algar_emi is offline Algar_emi  Canada
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Location: Canada, Qc
GB B1 Nutube PCB with integrated PS
Default GB B1 Nutube PCB with integrated PS

Hi. I'll make myself a pcb for the B1-Nutube, check the picture. Since it seems to be usefull for some other members, I open this small GB.

It is the Firstwatt circuit, with optional on board power supply using a Meanwell AC/DC 24V converter and additional CLC filtering (smd parts), before the original B1 CRC filtering. There are pads on the board to still connect an external dc power supply if you wish so. It still supports 2 inputs and two separate volume pots.
The AC/DC Meanwell power module MPM-20-24 is good from 80 VAC to 264 VAC, so good around the world... The PCB size fits the Hammond 1455N2201 chassis.

The PCB has a generous ground plane as the original FirstWatt, the AC section is located in the left corner, the audio in/out on the right, well separated. Each channel trace is separated by a ground (shield) trace. The input traces are routed from the bottom, the output from the top...

The PCB will come with the complete BOM, parts silkscreen and schematic.

Please right down your name and quantity. This small GB won't be open for long, so act rapidly. I'm almost done with the pcb desing. Cost should be 20U$ + Paypal fee and shipping cost to you. We should be good for at least 5 pcb. Will try to place the order in the next 1-2 weeks.

I'll keep you posted. Thanks
SB

20 Feb Update: Now reaching for QTY: 15, price will be around 16U$ then...
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File Type: jpg B1-Nutube_ver1.JPG (112.5 KB, 1676 views)

Last edited by Algar_emi; 20th February 2019 at 04:17 PM.
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Old 20th February 2019, 12:16 AM   #2
Algar_emi is offline Algar_emi  Canada
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Join Date: Oct 2002
Location: Canada, Qc
GB B1 Nutube PCB with integrated PS
GB Interest:

Name QTY
Algar_emi 1
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Old 20th February 2019, 12:22 AM   #3
hifibluedevil is offline hifibluedevil  United States
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Join Date: Dec 2004
Location: Durham, NC
Quote:
Originally Posted by Algar_emi View Post
GB Interest:

Name QTY
Algar_emi 1
hifibluedevil 1
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Old 20th February 2019, 12:23 AM   #4
Algar_emi is offline Algar_emi  Canada
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Join Date: Oct 2002
Location: Canada, Qc
GB B1 Nutube PCB with integrated PS
GB Interest, please cut and paste from the previous list. Thanks

Name QTY
Algar_emi 1
hifibluedevil 1
shattered_dream your email box if full...
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Old 20th February 2019, 12:39 AM   #5
dtaylo3 is offline dtaylo3  United States
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Join Date: Nov 2004
Location: coloradao usa
DIY store in the upcoming days will have Nelson's board's for sale. I realize yours is different with power supply, but perhaps you may want to wait until the DIY store sells through theirs.
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Old 20th February 2019, 06:33 AM   #6
Albundi is offline Albundi  Germany
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Join Date: Aug 2011
Location: K-Town
GB Interest, please cut and paste from the previous list. Thanks

Name QTY
Algar_emi 1
hifibluedevil 1
shattered_dream your email box if full...
Albundi 1
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Old 20th February 2019, 09:35 AM   #7
stijn001 is offline stijn001  Netherlands
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GB Interest, please cut and paste from the previous list. Thanks

Name QTY:
Algar_emi 1
hifibluedevil 1
Albundi 1
stijn001 1
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Old 20th February 2019, 09:51 AM   #8
gwrskien is offline gwrskien  Norway
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Join Date: Feb 2014
Location: skien
GB B1 Nutube PCB with integrated PS
GB Interest, please cut and paste from the previous list. Thanks

Name QTY:
Algar_emi 1
hifibluedevil 1
Albundi 1
stijn001 1
gwrskien 1
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Old 20th February 2019, 02:48 PM   #9
DontHertzMe is offline DontHertzMe  South Africa
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Join Date: Jul 2013
GB B1 Nutube PCB with integrated PS
Name QTY:
Algar_emi 1
hifibluedevil 1
Albundi 1
stijn001 1
gwrskien 1
DontHertzMe 1
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Old 20th February 2019, 03:12 PM   #10
Algar_emi is offline Algar_emi  Canada
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GB B1 Nutube PCB with integrated PS
Thanks for the head up. Indeed mine is different, and I'm guessing you'll offer matched JFET as well. I'm not offering any part, and the pcb fits into a nice, cheap enclosure, and as you noted has an integrated power supply. It is a different offer. I won't complete the GB until the board is offered on the store, that will let peoples the choice

Anyway as I said mine won't be open for long, so I'll probably close it after 10 boards...

SB
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