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DIY Stompboxes => Building your own stompbox => Topic started by: GREEN FUZ on April 18, 2007, 03:12:12 PM

Title: Skyripper. Help needed.
Post by: GREEN FUZ on April 18, 2007, 03:12:12 PM
I think I may have fallen at the first hurdle.

As I mentioned in a previous thread I am building the `07 version using basicaudios` layout. I`m trying to make sense of things by referring to the schematic and comparing it with the layout and also tungngruv`s perf layout. Being a slow learner it has only gradually dawned on me that the circuit is positive ground ( please correct me if I`m wrong ).

The point being, if I were to use NPN transistors is it just a matter of reversing the polarized caps and the battery to make it negative ground? From what I have read this can be a hit or miss solution. I know this question has been answered before in relation to fuzzfaces but input from anyone with experience of this particular circuit would be appreciated.

Title: Re: Skyripper. Help needed.
Post by: tungngruv on April 18, 2007, 04:26:05 PM
If you are using NPN trannies, reverse all the polarized caps, the battery and last, the diode. It will work fine that way.
Title: Re: Skyripper. Help needed.
Post by: GREEN FUZ on April 18, 2007, 04:30:25 PM
Excellent!!!Thankfully I`ve only soldered 5 of the caps in and I was going to replace them with smaller ones anyway.
Title: Re: Skyripper. Help needed.
Post by: John Lyons on April 18, 2007, 04:40:00 PM
Tung's perf layout is similar to the PCB I made, both were based on an old PCB...
Tung's first Skyripper was NPN, should work fine with the polarized caps, the battery and the diode reversed.

John