Enclosure not stated · 1 knob
Electro Harmonix Small Stone V1
Based on the Electro-Harmonix Small Stone· 8 other boards clone it
- Category
- Vibrato / Chorus
- Controls
- Rate
- Build
- Vero· 27×24· 44 cuts, 24 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Electro Harmonix, Modulation, Phaser
From the post
Layout for the first version of Small Stone which was produced between 1974(?) and 1978. Layout is based on schematic from Lectric Fx Note that original had long gone obsolete 8 pin OTA chips so this layout is modernized for easy to get LM13700s.
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 25 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×4 | 1.8K | 1.8k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×9 | 10K | 10k | read from the layout by eye | |
| ×10 | 27K | 27k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×2 | 270K | 270k | read from the layout by eye | |
| ×3 | 100K | 100k | read from the layout by eye | |
| ×1 | 180K | 180k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×6 | 6.8nF | 6.8n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | ? | ? | value not given; read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5087 | 2N5087 | read from the layout by eye | |
| Q2 | 2N5088 | 2N5088 | read from the layout by eye | |
| ICs 3 | ||||
| IC1 | LM13700 | LM13700 | CA3094 in original; read from the layout by eye | |
| IC2 | LM13700 | LM13700 | CA3094 in original; read from the layout by eye | |
| IC3 | LM13700 | LM13700 | CA3094 in original; read from the layout by eye | |
| Potentiometers 1 | ||||
| Rate | C1M | C1M | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
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