Enclosure not stated · 2 knobs
DOD 280 CompressorVerified
Based on the DOD 280 Compressor· 5 other boards clone it
- Category
- Compressor
- Build
- Vero· 19×12· 14 cuts, 7 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Compressor, DOD
From the post
Here we go with another classic optical compressor. Original unit uses VTL5C2, so could get away with using any LDR with 1M dark resistance. So the LDR resistor would be resistor leads of VTL5C2 and that green LED acts as LED leads of the vactrol. Positive/anode to strip four and negative/cathode to strip one. Haven't built it myself yet..
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 17 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 4 | ||||
| ×4 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | ? | ? | value not given; read from the layout by eye | |
| Transistors 1 | ||||
| ×2 | NP4121 | NP4121 | Transistors NP4121 (try 2N3904); read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM358 | LM358 | read from the layout by eye | |
| Opto 1 | ||||
| ×1 | VTL5C2 | VTL5C2 | vactrol, drawn as LDR + D2 (LED); or try LED+LDR with heatshrink; read from the layout by eye | |
| Potentiometers 2 | ||||
| Comp | B500K | B500k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
Other boards based on the DOD 280 Compressor
- DOD Compressor 280 Dirtbox Layouts
- DOD 280 Compressor Effects Layouts (blog)
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