Wednesday, 3 December 2025

Spaceman Effects Sputnik IIb

 Schematic is avaiable HERE.


 

12 comments:

  1. Hey everyone, I finished wiring it last night... Today when I woke up I plugged it in and voila... The magic of germanium happened! The effect works, but I need to check a few things in the center section of the on/off/on switches. Also, I didn't adjust the trims properly because I had visitors and couldn't do anything but plug it in... Later I'll take a closer look and give more details, but it's working 90% of the time. See you later and THANKS for your great work, Fuzzhead!

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  2. Sorry if there are any typos in the message, I use Google Translate.

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  3. Hi, after thinking about it a bit, I noticed that there's a missing cut at F17 to isolate C5. For the 4.7uF capacitor, use a polarized connection with negative to the emitter of Q3. Switch XF2 should be connected to FB,
    reverse the order xf2 where xf1 .

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  4. I'm having problems with the filter in the center position; it's not working. I'll keep looking. See you later.

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  5. Hi, I'm still working on this. Looking at the schematic again, I noticed that drift switch 4 should be connected four rows down, specifically Q22. I'm going to replace the filter switch to see if it's faulty because I can't figure out why there's no sound in the center position. The filters work fine at the ends and sound pretty good. I followed the instructions in the document for selecting the transistors...

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  6. I'll take a break now and finish the Mystery Box with Fasel. Thanks for your great work :)

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  7. Hey everyone, I'm still struggling with this. With the changes mentioned, everything works except the central part of the filter selector, and I can't figure out why. It's connected correctly. Any help would be great; that's all we need to do to check it out. ;)

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  8. Replies
    1. I’m here! Not going to build just yet. This one has me interested. Anymore not many do!

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  9. Hope he also release schematic for the new Atlas booster!

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  10. I've been racking my brain and I can't figure it out. Looking at the filter area in the diagram, it's DPDT on.off.on. The way it's connected, does the circuit break in the center position?

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  11. Could an electronics expert please take a look at the schematic?... Help! This is all that's left to verify.

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