madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: Loztboy on December 01, 2011, 11:59:16 AM

Title: Sprout R6 ?
Post by: Loztboy on December 01, 2011, 11:59:16 AM
I'm building a Sprout.
The BOM does not mention a R6 but there is a R6 on the layout and schematics.
Should I put a 2k2 resistor there?

I don't have a 2k2, I have a 2k4 and 1k8 I also have a 1k and a 1k2 that I can wire in series.
What should i do? my soldering iron is HOT :)
Title: Re: Sprout R6 ?
Post by: nzCdog on December 01, 2011, 12:08:13 PM
Yes 2k2.... it seems to have been missed in the BOM but its there on the schematic :)
Title: Re: Sprout R6 ?
Post by: nzCdog on December 01, 2011, 12:20:49 PM
Wire the 1k and 1k2 in series for 2k2.  Solder one end of each resistor into a pad hole each, upright and then twist the long ends together, then solder 'em.  
Title: Re: Sprout R6 ?
Post by: Loztboy on December 01, 2011, 12:27:15 PM
thanks!
one more question.
Is the little "pin" on the transistor supposed to face the same direction as the flat-side on the layout?
Hope you understand what i mean :D
Title: Re: Sprout R6 ?
Post by: Ettore_M on December 01, 2011, 04:15:26 PM
Quote from: Loztboy on December 01, 2011, 12:27:15 PM
thanks!
one more question.
Is the little "pin" on the transistor supposed to face the same direction as the flat-side on the layout?
Hope you understand what i mean :D
The little pin should be facing the other way.. The little "pin" indicates the pin which is the emmitor. I hope it helped you!  :D

Hector
Title: Re: Sprout R6 ?
Post by: Loztboy on December 01, 2011, 06:57:19 PM
Thanks.
I kind of figured it out when my new build acted as a mute box :)
Title: Re: Sprout R6 ?
Post by: themachinerages on January 01, 2012, 09:10:24 AM
Hey, I'm a bit late to this topic, but is 2k2 the same as 2.2k?
Title: Re: Sprout R6 ?
Post by: nzCdog on January 01, 2012, 10:08:57 AM
Quote from: themachinerages on January 01, 2012, 09:10:24 AM
Hey, I'm a bit late to this topic, but is 2k2 the same as 2.2k?
Hey man... yes, 2k2 is the same as 2.2k
Title: Re: Sprout R6 ?
Post by: Willybomb on September 16, 2012, 01:41:17 AM
Necrothread revival!

I got the BOM filled in by the local and populated the board to find the empty holes and R6 missing - I thought the shop had left out a 1k even though I thought I'd checked everything.

I subbed it with a 1k (because that's what I thought I needed (R5) and that was close enough) and it's working fine.  I've also subbed a couple of "pn100" for the transistors because that's what I could get.

http://www.jaycar.com.au/productView.asp?ID=ZT2283

What exactly does R6 do anyway?

Anyway, the sprout seems to be a good stoner rock dropped D style dirt.
Title: Re: Sprout R6 ?
Post by: midwayfair on September 16, 2012, 07:08:32 PM
Quote from: Willybomb on September 16, 2012, 01:41:17 AM
What exactly does R6 do anyway?

It sets the voltage on Q2. You've allowed it more voltage, so you'll get more volume and less dirt overall.