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Old 5th August 2013, 11:27 AM   #1001
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Quote:
Originally Posted by shaan View Post

I'm grateful to have so many constructive comments that only helps broaden my knowledge and experience. I'm happy to have the chance to share the layout with everyone here, and thankful to the big bros who shared their own works (I'm only 28 ).
Hi Shaan, I'm 27
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Originally Posted by shaan View Post
Alright, zobel resistor flattened, triangle and line footprint MT trimpot added with single turn trimpot. Seems there will be only one version of the layout.
No, you not the only one.
I also made 2 pairs output with source resistor (or jumper if not need)...

I'm waiting your new version...
I have my own layout but the parts are not yet complete (on their way)
I'm waiting the parts (vertical mounted 5 watt resistor) so it is fit nicely at the PeeCeeBee

ps : I feel sorry for my earlier post, hope you don't mind
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Old 5th August 2013, 11:52 AM   #1002
naf is online now naf  Indonesia
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Quote:
Originally Posted by shaan View Post
Assuming we are, this is how the mt-POT version's front-side will be.

I think it's best to make two versions, one for cheap single turn and another for multiturn. No space for adding both in one.
Shaan, there is top adjust version with same footprint as side adjust
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Old 5th August 2013, 01:21 PM   #1003
shaan is offline shaan  India
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Originally Posted by JOHN BALI View Post
...hope you don't mind...
Not at all.

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Originally Posted by naf View Post
Shaan, there is top adjust version with same footprint as side adjust
How is this one? The all in one!
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Old 5th August 2013, 01:30 PM   #1004
naf is online now naf  Indonesia
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Quote:
Originally Posted by shaan View Post
Not at all.



How is this one? The all in one!
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Old 5th August 2013, 04:48 PM   #1005
shaan is offline shaan  India
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Quote:
Originally Posted by JOHN BALI View Post
No, you not the only one.
Of course not. But what I meant in that post is that initially I planned to make two layouts, one for single turn pots and another for multiturn, and that now I will post only one. That's it.

I have seen your layout, it's cool.
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Old 6th August 2013, 02:52 AM   #1006
presbel is offline presbel  Philippines
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Quote:
Originally Posted by shaan View Post
Of course not. But what I meant in that post is that initially I planned to make two layouts, one for single turn pots and another for multiturn, and that now I will post only one. That's it.

I have seen your layout, it's cool.
It's prefect Shaan!!
Thanks
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Old 6th August 2013, 12:35 PM   #1007
shaan is offline shaan  India
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Quote:
Originally Posted by PMI View Post
...I will try to take a close look tomorrow...
Hi Pete.

Waiting for your input.
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Old 6th August 2013, 07:38 PM   #1008
PMI is offline PMI  United States
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Originally Posted by shaan View Post
In the meantime, interested guys may start sourcing 1.5mm or 1.6mm thick nylon washers for the VAS. These will be our "spacers".
The Renesas parts I have measure consistent in thickness, 4.8~4.85 mm.

The BD139/140, not so much, but mostly around 2.5~2.55 mm
(TO-126 w. heatsink pkg)

The BD139-16S-16/140-16S are between 3.25 and 3.30 mm
(those are all-plastic, so different pkg spec)

KSA1381/KSC3503, also plastic, same 3.25 ~~ 3.30

My mica washers measure 0.1 mm, and my silpads, 0.32

just for comparison....

LC used the Alfets, 5.02-5.03 mm with an insulator 0.33 thick
KSA1381/KSC3503 plastic pkg, about 3.25 mm (no insulator required)
and 2 mm spacers

@Shaan, still planning to respond to the layout, been a bit busy, sorry
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Old 6th August 2013, 09:25 PM   #1009
shaan is offline shaan  India
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One can use two spacers if one isn't enough, simple.

Alright, the pdfs will be posted here once Pete gives it a 'go'.

That said, the pdfs for the current layout is ready. So if anyone wants them, just send me a PM with your email address. Easy.

Cheers.
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Old 7th August 2013, 03:47 AM   #1010
PMI is offline PMI  United States
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Shaan,

I think it is a very nice and clean layout, and it places the dual mosfets and VAS transistors very well now.

Quote:
Originally Posted by shaan View Post
One can use two spacers if one isn't enough, simple.
Sure, I do not see a big issue, but since I have a bunch of parts sitting here, I thought I would post some dimensions, so we can all plan ahead.

The 470R which was in paralel w the two diodes is absent, so I assume you are planning on a fixed voltage spread. I would not have a problem with that, but it may be worth noting for other people.

The diameter of the largest electrolytic is 16-mm (?)

That's all from me,

Pete
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