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Polyvoks Filter
- Category
- EQ / Filter· Filters Wahs and VCFs
- Price
- see vendor
- Tags
- Filters Wahs and VCFs
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 42 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- RV1-RV3: drawn without knob names, so panel pot versus trimmer is a guess
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 25 | ||||
| R1 | 10k | 10k | read from the schematic by eye | |
| R2 | 100k | 100k | read from the schematic by eye | |
| R3 | 100k | 100k | read from the schematic by eye | |
| R4 | 220k | 220k | read from the schematic by eye | |
| R5 | 47k | 47k | read from the schematic by eye | |
| R6 | 3k | 3k | read from the schematic by eye | |
| R7 | 100k | 100k | read from the schematic by eye | |
| R8 | 162k | 162k | read from the schematic by eye | |
| R9 | 100k | 100k | read from the schematic by eye | |
| R10 | 110k | 110k | 1.2M if U3/U4 are LM4250; read from the schematic by eye | |
| R11 | 110k | 110k | 1.2M if U3/U4 are LM4250; read from the schematic by eye | |
| R12 | 100k | 100k | read from the schematic by eye | |
| R13 | 47k | 47k | read from the schematic by eye | |
| R14 | 1k | 1k | read from the schematic by eye | |
| R15 | 1k | 1k | read from the schematic by eye | |
| R16 | 47k | 47k | read from the schematic by eye | |
| R17 | 10k | 10k | read from the schematic by eye | |
| R18 | 100k | 100k | read from the schematic by eye | |
| R19 | 1k | 1k | read from the schematic by eye | |
| R20 | 100k | 100k | read from the schematic by eye | |
| R21 | 10k | 10k | read from the schematic by eye | |
| R22 | 100k | 100k | read from the schematic by eye | |
| R23 | 1k | 1k | read from the schematic by eye | |
| R24 | 47k | 47k | read from the schematic by eye | |
| R25 | 27k | 27k | read from the schematic by eye | |
| Capacitors 6 | ||||
| C1 | 100uF | 100u | electrolytic, +15V supply filter; read from the schematic by eye | |
| C2 | 100uF | 100u | electrolytic, -15V supply filter; read from the schematic by eye | |
| C3 | 100n | 100n | read from the schematic by eye | |
| C4 | 100n | 100n | read from the schematic by eye | |
| C5 | 1uF | 1u | read from the schematic by eye | |
| C6 | 1uF | 1u | read from the schematic by eye | |
| Transistors 1 | ||||
| Q1 | 2N3904 | 2N3904 | read from the schematic by eye | |
| ICs 5 | ||||
| U1 | TL072 | TL072 | dual op amp; read from the schematic by eye | |
| U2 | LF351 | LF351 | read from the schematic by eye | |
| U3 | UA776 | UA776 | programmable op amp (LM4250 alternative); read from the schematic by eye | |
| U4 | UA776 | UA776 | programmable op amp (LM4250 alternative); read from the schematic by eye | |
| U5 | TL072 | TL072 | dual op amp; read from the schematic by eye | |
| Inductors 2 | ||||
| L1 | self | SELF | supply choke, value not given; read from the schematic by eye | |
| L2 | self | SELF | supply choke, value not given; read from the schematic by eye | |
| Potentiometers 3 | ||||
| RV1 | 47k | 47k | Potentiometer | CV amount; unlabeled, could be a trimmer; read from the schematic by eye |
| RV2 | 100k | 100k | Potentiometer | frequency offset; unlabeled, could be a trimmer; read from the schematic by eye |
| RV3 | 100k | 100k | Potentiometer | resonance feedback; unlabeled, could be a trimmer; read from the schematic by eye |