1590A
NN Classic Fuzz
Based on the NN Classic Fuzz
From the post
Happy #FuzzFriday everybody! Here's a circuit I found while browsing around the Free Information Society that's ripe for modification–the NN Classic Fuzz. I think I laid this out while I was on paternity leave a while back, but I just now got around to finalizing the layout. Anyway, I can't find any info on the circuit, other than the schematic on FIS. It runs off a +4.5v supply, so I added a basic voltage divider to lower the normal +9v supply voltage. Also, the schematic doesn't include any controls, so if you want to add a volume pot (start with 100k, and then adjust if need be), run a wire from the Out pad to lug 3 of the pot, lug 2 becomes the new output, and lug 1 goes to ground. Should fit nicely in a 1590a.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 12 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×2 | 6.8K | 6.8k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| Capacitors 2 | ||||
| ×4 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| ×2 | germanium | GERMANIUM | D1, D2; read from the layout by eye | |
| Transistors 1 | ||||
| ×4 | BC550C | BC550C | Q1-Q4; read from the layout by eye | |