Enclosure not stated · 2 knobs
Boss NF-1 Noise GateVerified
Based on the Boss NF-1 Noise Gate· 1 other board clones it
- Category
- Noise Gate
- Build
- Vero· 25×22· 44 cuts, 24 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Boss, Chris Stelloh, Noise Gate
From the post
Another awesome contribution Chris Stelloh. Another 1980's Boss pedal I use a lot, here's the modified layout for the original gray NF-1 Noise Gate, courtesy of Guitar Electronics DIY PCBs in PolanD: SCHEMATIC I reversed the wiring for the decay pot, since it was working backwards from the original. The LM741 IC is being powered by a 1k resistor-limited supply, so I put the LED+ pad on that rail without any additional current limiting resistors, but if you need your status LED to be dimmer, you can add an extra cut at B23 and place a three column CLR from B22 to B24. As far as the trim pots go, I set the "RNG" to max and the "LVL" somewhere in the middle on my build.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 40 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×5 | 1M | 1M | printed 1m; read from the layout by eye | |
| ×2 | 1k | 1k | read from the layout by eye | |
| ×4 | 4k7 | 4.7k | read from the layout by eye | |
| ×2 | 470k | 470k | read from the layout by eye | |
| ×4 | 10k | 10k | read from the layout by eye | |
| ×3 | 22k | 22k | read from the layout by eye | |
| ×1 | 680Ω | 680 | read from the layout by eye | |
| ×1 | 220k | 220k | read from the layout by eye | |
| ×1 | 390k | 390k | read from the layout by eye | |
| ×1 | 3k3 | 3.3k | read from the layout by eye | |
| ×3 | 100k | 100k | read from the layout by eye | |
| ×2 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 5k6 | 5.6k | read from the layout by eye | |
| ×1 | 33k | 33k | read from the layout by eye | |
| Capacitors 9 | ||||
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×6 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 15nF | 15n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 33nF | 33n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| C12 | 2u2 | 2.2u | tantalum; read from the layout by eye | |
| Diodes 5 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | read from the layout by eye | |
| D4 | 1N4148 | 1N4148 | read from the layout by eye | |
| Z1 | 4.7V Zener | 4V7 | read from the layout by eye | |
| Transistors 6 | ||||
| Q1 | BC550 | BC550 | read from the layout by eye | |
| Q2 | BC550 | BC550 | read from the layout by eye | |
| Q3 | 2N5485 | 2N5485 | JFET; read from the layout by eye | |
| Q4 | BC550 | BC550 | read from the layout by eye | |
| Q5 | BC550 | BC550 | read from the layout by eye | |
| Q6 | BC550 | BC550 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM741 | LM741 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Threshold | B100k | B100k | Potentiometer | read from the layout by eye |
| Decay | B1M | B1M | Potentiometer | printed B1m; read from the layout by eye |
| Trimmers 2 | ||||
| LVL | 5k | 5k | gate attenuation amount; read from the layout by eye | |
| RNG | 5k | 5k | max decay time; read from the layout by eye | |
| Other 1 | ||||
| TH1 | 10k NTC thermistor | 10K NTC THERMISTOR | read from the layout by eye | |
Other boards based on the Boss NF-1 Noise Gate
- NF1 Guitar-Electronics.eu · €6.25