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 Forum index » DIY Hardware and Software » The layout factory
LM13700 Wasp filter (untested)
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ickystay



Joined: Nov 15, 2006
Posts: 139
Location: Oregon

PostPosted: Tue Dec 16, 2008 11:16 pm    Post subject: LM13700 Wasp filter (untested) Reply with quote  Mark this post and the followings unread

Will an LM13700 work to replace the two CA3080's in the Wasp filter? I don't know. I seem to recall guys using them in their DS-7 clones.

Anyway, I made a layout to try. I feel funny posting this among the pro looking PCB's you all fashion, but what the heck. Maybe the electrons wont mind.

This is the Juergen Haible version. Check his site and pick up the schematic here (you'll need it):

http://jhaible.heim.at/tonline_stuff/hj_wasp.html

The PCB will need to be flipped for PNP. Resize to 600dpi or 6 X 6.84 cm or 2.362 X 2.693 inches. No resampling.

Sorry for not testing this.


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vtl5c3



Joined: Sep 08, 2006
Posts: 423
Location: PDX
Audio files: 13

PostPosted: Wed Nov 25, 2009 8:17 pm    Post subject: Reply with quote  Mark this post and the followings unread

Should work. I remember seeing something in electronotes about the 13x00 being a drop in replacement for the 3080, as long as you overlooked the new features (diodes at the inputs, output buffer).
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fonik



Joined: Jun 07, 2006
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Location: Germany
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PostPosted: Thu Nov 26, 2009 2:05 am    Post subject: Reply with quote  Mark this post and the followings unread

IIRC it is partly even the same IC layout, just with some add-ons (diodes, buffers).
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n.d



Joined: Dec 15, 2011
Posts: 22
Location: Argentina

PostPosted: Sun Feb 05, 2012 8:36 am    Post subject: Reply with quote  Mark this post and the followings unread

So, did anyone test this?
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isak



Joined: Dec 13, 2009
Posts: 699
Location: Israel
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PostPosted: Sat Sep 01, 2012 11:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi guys.

Some one test this?
I prefer to use LM13700 instead of 3080.
Is it verifid?

Cheers,
Isak E.

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Cynosure
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Joined: Dec 11, 2010
Posts: 667
Location: Toronto, Ontario - Canada
Audio files: 34

PostPosted: Sun Sep 02, 2012 9:45 am    Post subject: Reply with quote  Mark this post and the followings unread

I didn't make this PCB, but I made two Wasp filters following the schematic and replaced the 3080's with LM13700. It works fine. Apparently it is the exact same IC on the inside, but a few extra features in the LM13700.
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isak



Joined: Dec 13, 2009
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PostPosted: Sun Sep 02, 2012 9:53 am    Post subject: Reply with quote  Mark this post and the followings unread

Thank you for your reply.

Can you please share the layout you used?

Cheers,
Isak E.

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Cynosure
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Joined: Dec 11, 2010
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Location: Toronto, Ontario - Canada
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PostPosted: Sun Sep 02, 2012 10:52 am    Post subject: Reply with quote  Mark this post and the followings unread

I just used perfboard and made it up as I went. The schematic was easy to follow and everything worked on the first try (which doesn't happen half the time I solder something).
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isak



Joined: Dec 13, 2009
Posts: 699
Location: Israel
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PostPosted: Sun Sep 02, 2012 2:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

thank you:)
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