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DIY Stompboxes => Building your own stompbox => Topic started by: Styles on April 16, 2012, 10:17:04 PM

Title: Confirm Transistor Orientation (Silicon Tone Bender / BC109C)
Post by: Styles on April 16, 2012, 10:17:04 PM
Can anyone confirm the orientation of the transistors for this layout?  I'm figuring the the tab faces the bottom in this case, and based on past experiences, means that's 100% wrong and should be facing the top of the page. Here's the layout i'm using:

(http://i40.tinypic.com/jfhz0k.gif)
Title: Re: Confirm Transistor Orientation (Silicon Tone Bender / BC109C)
Post by: rousejeremy on April 16, 2012, 10:33:51 PM
http://www.technifest.com/fact19aa.jpg
Title: Re: Confirm Transistor Orientation (Silicon Tone Bender / BC109C)
Post by: LucifersTrip on April 16, 2012, 11:22:01 PM
the schematic tells all:

(http://4.bp.blogspot.com/-1ff99JJTw3E/T2CnH5-10eI/AAAAAAAABF0/Uxx7br32i2I/s1600/SiliToneBender.GIF)

Q1's emitter (the tab) hits the 1K...
Title: Re: Confirm Transistor Orientation (Silicon Tone Bender / BC109C)
Post by: Styles on April 16, 2012, 11:46:07 PM
Quote from: LucifersTrip on April 16, 2012, 11:22:01 PM
the schematic tells all:

Q1's emitter (the tab) hits the 1K...

Ah, had never seen the schematic for this before- looks like I had it right!  thanks!
Title: Re: Confirm Transistor Orientation (Silicon Tone Bender / BC109C)
Post by: nocentelli on April 17, 2012, 01:29:12 PM
This one sounds really good with an input cap blend pot: I'll post and updated layout later tonight.
Title: Re: Confirm Transistor Orientation (Silicon Tone Bender / BC109C)
Post by: Gus on April 17, 2012, 05:49:30 PM
http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=18323&g2_serialNumber=1
Title: Re: Confirm Transistor Orientation (Silicon Tone Bender / BC109C)
Post by: Gus on April 20, 2012, 04:20:14 PM
(http://www.diystompboxes.com/pedals/gusFuzzFace.gif)

(http://www.diystompboxes.com/pedals/3tran.JPG)

Then the rocket, an adjusted 3 transistor note the distortion sections.  This stuff has been up on the web for years.