Enclosure not stated · 2 knobs
BYOC 27V BoostVerified
Based on the BYOC 27V Boost· 1 other board clones it
From the post
Taken directly from BYOC.
Possibly the World's cleanest, most transparent boost. It utilizes the 7660S charge pump's ability to take a standard 9v power supply and output both +18v and -9v. The op-amp based boost circuit takes advantage of the whopping 27v differential to produce 20dB with an amazing amount of headroom. It doesn't matter if you're using active pickups - you will not get any clipping from this boost. Slam it with another boost, it still won't clip! The treble control allows you to cut/boost frequencies above 3k3Hz by 6dB.
To be honest, it's not as small neat as I would like it due to the three different power connections, but here she is.
On the site it says it uses a 7660s for the charge pump, but the schematic shows a MAX1044, remember the two are interchangeable.
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 19 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×5 | 10k | 10k | read from the layout by eye | |
| ×1 | 100k | 100k | read from the layout by eye | |
| ×1 | 18k | 18k | read from the layout by eye | |
| ×1 | 330k | 330k | read from the layout by eye | |
| ×1 | 3.3M | 3.3M | standing; read from the layout by eye | |
| ×1 | 470k | 470k | read from the layout by eye | |
| ×1 | 1k | 1k | read from the layout by eye | |
| ×1 | 2.2k | 2.2k | read from the layout by eye | |
| Capacitors 5 | ||||
| ×2 | 22nF | 22n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×6 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 1N4001 | 1N4001 | read from the layout by eye | |
| D2 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| IC2 | MAX1044 | MAX1044 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Volume | B50K | B50k | Potentiometer | printed '50k Linear'; read from the layout by eye |
| Treble | B10K | B10k | Potentiometer | printed '10k Linear'; read from the layout by eye |
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