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Tuesday 24 June 2014

Green Wizard Guitar Overdrive Distortion Stripboard Layout


I've been working on this for quite some time. I've always wanted to design my own distortion pedal and finally I have.
I used 2 main parts for this - one is a TL081 general purpose J-FET op-amp and the other is a more special LT1037 op-amp - I chose this for the high-end clarity and low end solidness... haha not really (I don't believe that crap) no, I chose this because it is a very fast and low noise op-amp. it also has input current limiting diodes which affect the type of distortion this pedal gives you. it is also quite low power (in the order of about 2.5 mA)

I did a quick video demonstrating how it sounds which I will attach below.

the name comes from my favourite cartoon growing up - "the flight of dragons"  hopefully I will make 3 more of my own stompboxes for the other 3 wizards in that film.

NB - I put germanium diodes in this and it improved it drastically 





6 comments:

  1. Hi Paul,

    I just wanted to let you know that you can see pics of my Green Wizard in your original thread on the Tagboard Effects board: http://www.tagboardeffects.blogspot.ca/p/forum.html

    Thanks a lot for a great design!

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    1. that's great dude. I'm glad you like the design! if you want to make it the "deluxe" take out the TL081 and put in a INA106 - very bloody expensive!

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  2. Good to know, I'll have to check if I can get some samples for that one too!

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  3. Hi, Paul,

    I've had this one on my "to do" list and finally got to it a couple of days ago. I built it with the diodes socketed and initially put red LEDs in to get a sort of "baseline" before trying some germanium diodes. You're dead on. With the LEDs it was a decent overdrive but did not blow me away. I auditioned the germanium diodes I had on hand and after settling on a pair of Russian D310s this is one of my favorites ODs. TONS of character!

    I actually had a lot more to say on this but the character limit on comments cut me off. I left the full review here: http://guitar-fx-layouts.42897.x6.nabble.com/Green-Wizard-Overdrive-distortion-Stripboard-td10941i20.html#a16450

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