Tuesday, 21 February 2017

Frequency Central Red Star Drive

A real nice booster/overdrive that's basically has a submini tube that replaced the transistor create by frequency central over at DIYSB, schematic. Make sure you are rated at least 25V due to the pedal running +12V.


Version 1: Symmetrical Clipping Diodes

 Version 2: Asymmetrical Clipping Diodes

Posted by at 03:07
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5 comments:

  1. Will Kenworthy22 February 2017 at 06:53

    Hi Zach. I think the layouts are posted backwards. The top one is labeled Symmetrical but is in fact Asymmetrical (I think) while the 2cd is the opposite. Sorry! Hate to be the messenger.
    As always ....
    Very grateful for all your work that you share with us. Especially since you have exams coming up ... Good Luck!
    Don't know how you manage it,
    Will

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    Replies
    1. Zach23 February 2017 at 01:59

      damn, yep they're backwards. i guess my mind was still out of it when i posted the layouts. fixed.

      Delete
  2. Unknown25 February 2017 at 03:35

    Asymmetrical is verified using Raytheon tube. Used 1n4148 diodes. Very light drive as in the description. May try some swaps. Also used a 9v-18v voltage doubler with a 12v regulator getting about 11.8v close enough for rock and roll! Thanks a ton Zach!

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    Replies
    1. Zach25 February 2017 at 04:48

      sweet, that means both should be verified, since the only real difference is the diodes. cheers on the verification.

      Delete
  3. Hozy3119 March 2017 at 17:08

    Asymmetrical also verified with Tung-Sol 5672.

    ReplyDelete

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