Enclosure not stated · 2 knobs
1981 Inventions LVLVerified
Based on the 1981 Inventions LVL· 2 other boards clone it
From the post
Schematic is avaiable HERE.
Original buffered bypass version
...and a requested true bypass version.
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 28 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
- 6.81K at column 7 rows B-D: printed clearly, unusual value
- 475Ω (column 19 rows F-H and flat on row R): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×4 | 10K | 10k | read from the layout by eye | |
| ×5 | 100K | 100k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×2 | 475Ω | 475 | read from the layout by eye | |
| ×1 | 39K | 39k | read from the layout by eye | |
| ×1 | 6.81K | 6.81k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 10Ω | 10 | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 150K | 150k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 8 | ||||
| ×2 | 100pF | 100p | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×4 | 100nF | 100n | read from the layout by eye | |
| ×3 | 220nF | 220n | read from the layout by eye | |
| ×3 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×3 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | 3.3V Zener | 3V3 | D1, D2; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N3904 | 2N3904 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | 1458 | 1458 | read from the layout by eye | |
| IC2 | LM833 | LM833 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Gain | C100K | C100k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
Other boards based on the 1981 Inventions LVL
- 1981 Inventions LVL Effects Layouts (blog)
- 1991 Inventor PCB Guitar Mania · 125B · €11.90