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 Forum index » DIY Hardware and Software » Thomas Henry designs
Thomas Henry VCF-1
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MRPH



Joined: Jun 27, 2011
Posts: 2
Location: UK
PostPosted: Mon Jun 27, 2011 12:15 am    Post subject: Thomas Henry VCF-1
Subject description: Debugging		 Reply with quote  Mark this post and the followings unread
Hi there

Newbe here - I am hoping you can help - I am putting together the VCF-1 and I could use some information.

What voltage range shhould I expect out of the Q1/Q2 pair? (I am using 2n3906) when I sweep the coarse control? I am wondering if I have damaged either one of the trannies or the 13700 I am using.
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MRPH



Joined: Jun 27, 2011
Posts: 2
Location: UK
PostPosted: Mon Jun 27, 2011 8:20 am    Post subject: Solved Reply with quote  Mark this post and the followings unread
I think I have solved this now - silly newbie mistake (not going to say what!) - I am now the proud owner of a TH VCF-1

I must say I am impressed with TH schematics and a big thank you to Scott for his birth of a synth pages for putting the designs out in the real world.
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