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 Forum index » DIY Hardware and Software » The layout factory
Thomas Henry VCF-1 on Stripboard
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Nardu



Joined: Feb 28, 2011
Posts: 40
Location: Braila, Romania

PostPosted: Wed Jun 19, 2013 9:20 pm    Post subject: Thomas Henry VCF-1 on Stripboard Reply with quote  Mark this post and the followings unread

Here, Thomas Henry VCF-1 layout on Stripboard, design with LochMaster :
NB:
Stripboard = H25SR050 (50x100mm)
Q1,Q2 = 2SA798
OTA's 2xCA3080 = LM13700
IC3 = TL074 pins have been reassigned according specific stripboard design ( see Sheet_0001-1.jpg, Sheet_0002-1.jpg )


TH_ VCF-1 2SA798.jpg
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TH_ VCF-1 2SA798.jpg



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Nardu



Joined: Feb 28, 2011
Posts: 40
Location: Braila, Romania

PostPosted: Thu Jun 27, 2013 9:27 pm    Post subject: Thomas Henry VCF-1 layout on Stripboard r.1 Reply with quote  Mark this post and the followings unread

Thomas Henry VCF-1 layout on Stripboard rev.1 :
- reduced connections on the backside
- space for different trimmers pinouts
- GND route optimization
Stripboard: 63.5x100mm - 2.5x4 inch

Also a version for SSM2220 and MAT03 dual matched transistor


TH_ VCF-1 2SA798 r.1.jpg
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Thomas Henry VCF-1with 2SA798 layout on Stripboard rev.1 in LochMaster
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TH_ VCF-1 2SA798 r.1.jpg



TH_ VCF-1 SSM2220 r.1.jpg
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Thomas Henry VCF-1with SSM2220 / MAT03 layout on Stripboard rev.1 in LochMaster
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TH_ VCF-1 SSM2220 r.1.jpg



TH_ VCF-1 MAT03 r.1.jpg
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Thomas Henry VCF-1with MAT03 layout on Stripboard rev.1 in LochMaster
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TH_ VCF-1 MAT03 r.1.jpg


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Jaba



Joined: Feb 27, 2009
Posts: 47
Location: Genova, Italy

PostPosted: Thu Jul 04, 2013 3:12 am    Post subject: Reply with quote  Mark this post and the followings unread

great job, thank you for sharing it
I was thinking of making the same, your work will make me save a lot of time
are these layout verified as working ?
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Nardu



Joined: Feb 28, 2011
Posts: 40
Location: Braila, Romania

PostPosted: Thu Jul 04, 2013 2:52 pm    Post subject: Thomas Henry VCF-1 layout on Stripboard r.1 Reply with quote  Mark this post and the followings unread

@Jaba
I have not built yet. I checked several times the circuit routes.
Anyway, I attached Lockmaster files so you can check yourself the circuit routes.
In Lockmaster, almost all of the components have in their properties tab, links to datasheet, forums URL's, suppliers URL's etc.
If you find something wrong, just post here.

- Finaly, version with matched 2N2906. Tempco install .... here


TH_ VCF-1 2N2906 R1.jpg
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Thomas Henry VCF-1with matched 2N2906 layout on Stripboard rev.1 in LochMaster
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TH_ VCF-1 2N2906 R1.jpg



th_vc1_2N2906_1.zip
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LochMaster files for Thomas Henry VCF-1with matched 2N2906 layout on Stripboard rev.1

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 Filename:  th_vc1_2N2906_1.zip
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Jaba



Joined: Feb 27, 2009
Posts: 47
Location: Genova, Italy

PostPosted: Mon Aug 05, 2013 4:38 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Nardu,

I started putting together this VCF, following your layout for the 2SA798 version;
not finished yet, some parts missing

I think I found a little mistake: in the lower part of the board, at the right of IC1, R5 goes from a ground line to ... nothing, i.e. R5 is connected to a strip which has no other connection.
the same seems to appear in all of the layouts

another detail: aren't the hand matched transistors 2N3906 ?

I hope this can be useful

thank you again for sharing your work
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Nardu



Joined: Feb 28, 2011
Posts: 40
Location: Braila, Romania

PostPosted: Mon Aug 05, 2013 6:47 am    Post subject: Thomas Henry VCF-1 layout on Stripboard r.2 Reply with quote  Mark this post and the followings unread

@Jaba - Thanks for your revision !

There is a duplicate for R5, (... lost in space ! , Twisted Evil ) . Just remove it, see here. ( don't affect the circuit ! ). Valid for all other layouts.

Below, the Thomas Henry VCF-1 2SA798 layout on Stripboard rev.2 :
- remove the R5 duplicate

LochMaster files for Thomas Henry VCF-1with 2SA798 layout on Stripboard rev.2
Jaba wrote:
... aren't the hand matched transistors 2N3906 ?

I don't understand the question, please reformulate, even in Italian.


TH_ VCF-1 2SA798 r.1_fault.jpg
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TH VCF-1 2SA798 r.1 fault
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TH_ VCF-1 2SA798 r.1_fault.jpg



TH_ VCF-1 2SA798 r.2.jpg
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Thomas Henry VCF-1with 2SA798 layout on Stripboard rev.2 in LochMaster
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TH_ VCF-1 2SA798 r.2.jpg



th_vcf1_2SA798_r.2.zip
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LochMaster files for Thomas Henry VCF-1with 2SA798 layout on Stripboard rev.2

Download
 Filename:  th_vcf1_2SA798_r.2.zip
 Filesize:  1.21 MB
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