This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Friday, March 22, 2019

Skreddy Fuzz Driver

Happy Fuzz Friday, everyone. Here's a modded Fuzz Face from Skreddy Pedals. Early versions are all germanium and later versions are a hybrid germanium/silicon setup. Since it's so similar to a Fuzz Face, there's a lot of room for experimentation. Here's the schematic for reference.


at
Labels: , ,

15 comments:

  1. BlackwingMarch 22, 2019 at 11:14 AM

    Hey:)
    To make it a hybrid would it be as easy as sticking an si transistor in q1? Would there be any mod you would suggest?
    Thnx,

    ReplyDelete
    Replies
    1. Effects LayoutsMarch 22, 2019 at 11:31 AM

      Yeah, I'd start with a low-medium hFE silicon transistor in Q1. You may need to adjust the 56k resistor from 9v to the collector, but I'd start with just replacing Q1 and go from there.

      Delete
    2. AnonymousMarch 22, 2019 at 11:40 AM

      There's plenty of good discussion on diystompboxes.com on the topic... some simple and some with great detail:
      https://www.diystompboxes.com/smfforum/index.php?topic=77340.0
      https://www.diystompboxes.com/smfforum/index.php?topic=118863.0

      Delete
  2. BlackwingMarch 22, 2019 at 6:08 PM

    Got it thnx!

    ReplyDelete
  3. ZZOYDMarch 25, 2019 at 3:11 PM

    Verified! Used silicon both, bc 549, 2n 5088, tried Ge q1 MP 38a, Q2 - mpsa 14,18, bc 549, 2n 5088. My verdict: Q1 Ge mp38a hfe 60-85(tried a lot of), Q2 si - 2n5088 hfe=430 or kt 3102 e hfe=500-700, all good working! 56 kom should trim individual & very exactly, no more,no less.& yet, i changed drive 5k to 20 kom.

    ReplyDelete
  4. ZZOYDMarch 25, 2019 at 3:13 PM

    if you will use Q2 with low hfe, you will get low gain.

    ReplyDelete
  5. JOÃOJune 12, 2019 at 1:44 PM

    Boa tarde. Quais TRANSISTORES tem um maior rendimento? E para D1?
    Grato.

    ReplyDelete
  6. Chuck D. BonesSeptember 8, 2019 at 12:32 AM

    The Hybrid Fuzz Driver insides that I've seen had three transistors: 2 Si and 1 Ge. Do you have a schematic for that one?

    ReplyDelete
  7. SDecember 16, 2020 at 8:24 PM

    Is it different from this?
    https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTUkQWgMgZ4LLCD6c1yiIcBjZZttI41zbB-7w&usqp=CAU

    ReplyDelete
  8. AlexJanuary 30, 2023 at 1:23 PM

    Good afternoon, please tell me what kind of yellow capacitor 10mKF is on the third leg of the volume, ordinary ceramic, not polar? Thanks.

    ReplyDelete
    Replies
    1. Effects LayoutsJanuary 30, 2023 at 9:34 PM

      That's a 10uF tantalum, which is polarized. An electrolytic would also work there.

      Delete
  9. AlexJanuary 31, 2023 at 6:43 AM

    👍

    ReplyDelete

Subscribe to: Post Comments (Atom)