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.

Tuesday, November 21, 2017

Spaceman Effects Saturn V

Here's the Spaceman Saturn V boost pedal. It's a pretty unique booster and uses depletion mode LND150N3-G MOSFETs. In original units, there are 2 resistors in series going to each drain of the transistors. They essentially create a 4.7k resistor using some really uncommon values. (It appears that the only reason for that is for more interesting guts. And lets be real, Spaceman has some of the best looking pedal guts around.) I've included room for the ferrite beads of the originals to fit on the board (these reduce RF noise) and if you wire the pots off board you can probably fit it in a 1590a. More info and schematic found here.


5 comments:

  1. Works wonderfully eventhough hard as I tried, my stashbin was all empty on 6,19k resistors... =) Replaced with a 6,8k and the ferrites were omitted. This one has lot of harmonics in it! Thanks for the layout, you da man!

    ReplyDelete
  2. sorry im new to pedal making but I cant find the 1n400x anywhere online any more info on that? Thanks

    ReplyDelete
    Replies
    1. Look for 1N4001 or 4004... It's for polarity protection, so don't stress about it too much (as long as you don't plug in the wrong power supply).

      Delete
  3. built it and it works, but it pops when it's engaged. i tried a 3PDT bypass, a Millemium II bypass and an Opto-tron bypass and it pops with all of them. i also tried input and output pulldown resistors, and a coupling capacitor on the input but still has the same pop when engaged.

    ReplyDelete