GB "long and skinny" FirstWatt J2 clone PCBs

[Syl20m]

@meanie,
check post 421....
if you are lucky!! otherwise you may have to wait a bit , as there is not so much interrest from people after 2 group buy in a short period !

 

[Syl20m]

@meanie,
check post 421....
if you are lucky!! otherwise you may have to wait a bit , as there is not so much interrest from people after 2 group buy in a short period !

 

[carsten.witt]

rescheduled to friday

 

[meanie]

Thanks Syl20m

@meanie,
check post 421....
if you are lucky!! otherwise you may have to wait a bit , as there is not so much interrest from people after 2 group buy in a short period !

 

[carsten.witt]

still no delivery, but trackinging says arrived in berlin

 

[flamethrower1]

Will the Antek 3220 transformer be ok to run in place of the 3218 since it is out of stock?

 

[JeffYoung]

The Toshiba's in the LTP are the primary voltage concern. They're driven slightly over spec even with 23V rails; more so with 26V rails.

On the other hand, Nelson has found them to be conservatively spec'ed. See the F5 Turbo docs for more info.

 

[Syl20m]

Hi,

i never been disappointed with this one:

TTSA0300 - Transformer AUDIO TSA300VA - voltage to 50V - Shop Toroidy.pl


TTSA0500 - Transformer AUDIO TSA500VA - voltage to 50 V - Shop Toroidy.pl

not sure yet what i will order :

500va 2x18v
or
300va 2x18v
or
2x300va 18v

i will go for a single box , so i have to check space available for a single or 2 transformers.

what do you recommand guys , single or dual ??

 

[JeffYoung]

I built mine with a single TTSA0500. I did use a de-coupled PSU board, though. (Single C followed by separate RC for each channel.)

 

[Paul M]

Would you guys think that 2x 160VA (18VAC) would be undersized for the DIY J2? From my simple calculations, it looks to be OK.

I'm trying to use transformers I already have, so my options are 2x 160VA/18VAC or 2x 200VA/25VA for a dual mono build, the latter being a little much from what I've read.

Paul

 

[mlwebb]

I am going with 2x 200VA (18) for mine, figuring a single 300VA is fine in my F6. I would think 2x 160VA would be good too. I have noticed a little inflation over time in VA ratings, occasionally a little readjustment is in order
Michael

 

[carsten.witt]

PCBs should be on the DHL car for delivery ...

 

[carsten.witt]

H,

pcbs are landed, tomorrow I will start packaging and contact for last paying.

@atom622,
still interested, then wrote me a PM?!

 

[manniraj]

Need a help guys when I uploaded Jeff's gerber files the latest one on pcbway I got an error after there review to choose which are the correct files. I took the gerber files from this thread @ post# 205 - GB "long and skinny" FirstWatt J2 clone PCBs

@carsten.witt, which gerber files did you order and have you also got similar error

https://pcbwayfile.s3-us-west-2.amazonaws.com/web/20/04/07/0618383096212.png

 

[JeffYoung]

It looks like you need to upload it to pcbway as two separate boards (left and right). I think it's wondering why there's 2 of everything....

 

[manniraj]

It looks like you need to upload it to pcbway as two separate boards (left and right). I think it's wondering why there's 2 of everything....

Thanks Jeff, so its a 4 layer board and may be that is the reason PCBWay shows me up as only 2 layers. But JLpcb site shows correctly as 4 layers.

 

[JeffYoung]

No, it's two separate 2-layer boards. Front and back copper only.

(The silkscreen and soldermask layers aren't usually included when someone describes how many layers a board is. However, including those there are 6.)

 

[manniraj]

So if I have 2 make this as 2 separate files, which of them do I need to segregate. From the image that I posted from the pcbway site above

there are 16 files and which among them should they consider for printing.

Thanks

 

[carsten.witt]

You see in the left layer window ... layer starts with

J2left and J2right ... put them in separate files and then upload to pcbs fabric.

Edit: i will share you via PM the both files for fabric in a few minutes.

 

[Stones]

A pair of FWJ2 PCB’s to help my sanity please if more become available