Enclosure not stated · 2 knobs
YACK YF-2 Fuzz
Based on the Yack YF-2 Fuzz· 1 other board clones it
From the post
George Giblet did a trace (and some guesswork on the cap values) on FSB a few years back. The cap values might not be 100% per original, but according to George, those should be at least close enough. There are a few ideas on this late 60's circuit that are not present on every single FF/TB-clone out there, so i thought this migh be nice and fun little circuit to try out. Not sure if i built one back when this was drawn. Seems i can't remenber everything that went on in 2019. Seems so long ago now. However. This might be fun to build and to tweak to your liking. Note the transistor pinouts as those match 2SC828s. Parallel polarity protection is in place etc. I'm fairly certain you'll get this sounding good with modern values for resistors as well.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 16 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 5K (two, columns 4 and 8), 2K (column 12), 50K (column 11), 500K (column 3): printed clearly, unusual values
- 250pF (two, column 1) and 20nF (column 11): printed clearly, unusual values
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 2K | 2k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×2 | 5K | 5k | read from the layout by eye | |
| ×2 | 15K | 15k | read from the layout by eye | |
| ×1 | 50K | 50k | read from the layout by eye | |
| ×1 | 500K | 500k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×2 | 250pF | 250p | read from the layout by eye | |
| ×1 | 3.3nF | 3.3n | read from the layout by eye | |
| ×1 | 20nF | 20n | read from the layout by eye | |
| ×4 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N4007 | 1N4007 | added polarity protection; read from the layout by eye | |
| Transistors 1 | ||||
| ×3 | 2SC828 | 2SC828 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Fuzz | B100K | B100k | Potentiometer | read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| High/Low | SPDT | SPDT | toggle; read from the layout by eye | |
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