Enclosure not stated · 1 knob
Polyfusion 2010 VCA (JPG)
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 23 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×4 | 100K | 100k | signal input, 1458 feedback, two CV inputs; read from the schematic by eye | |
| ×2 | 470 | 470 | 3080 input dividers; read from the schematic by eye | |
| ×1 | 1M | 1M | VCA balance; read from the schematic by eye | |
| ×5 | 10K | 10k | 3080 output to TL081, 1458 inter-stage, 1458 feedback, 2N3906 bias pair; read from the schematic by eye | |
| ×1 | 22K | 22k | TL081 feedback; read from the schematic by eye | |
| ×1 | 620 | 620 | output; read from the schematic by eye | |
| ×2 | 20K | 20k | 1%, offset network; read from the schematic by eye | |
| ×1 | 300K | 300k | gain pot; read from the schematic by eye | |
| ×1 | 50K | 50k | read from the schematic by eye | |
| ×1 | 5K | 5k | 1458 + input; read from the schematic by eye | |
| ×1 | 470K | 470k | read from the schematic by eye | |
| Capacitors 4 | ||||
| ×2 | .01uF | 10n | 3080 supply bypass; read from the schematic by eye | |
| ×1 | 100pF | 100p | read from the schematic by eye | |
| ×2 | 0.1uF | 100n | TL081 supply bypass; read from the schematic by eye | |
| ×2 | 100uF | 100u | 25V supply filter; read from the schematic by eye | |
| Transistors 1 | ||||
| ×2 | 2N3906 | 2N3906 | read from the schematic by eye | |
| ICs 3 | ||||
| ×1 | CA3080 | CA3080 | drawn 3080; read from the schematic by eye | |
| ×1 | TL081 | TL081 | read from the schematic by eye | |
| ×1 | 1458 | 1458 | dual, both halves used; read from the schematic by eye | |
| Potentiometers 1 | ||||
| Gain | B25K | B25k | Potentiometer | drawn 25K LIN; read from the schematic by eye |
| Trimmers 3 | ||||
| VCA Bal | 100K | 100k | read from the schematic by eye | |
| Gain Trim | 5K | 5k | read from the schematic by eye | |
| Output Offset | 500 | 500 | read from the schematic by eye | |