Enclosure not stated
Active Notch Filter
- Category
- EQ / Filter· Tone Control and EQs
- Price
- see vendor
- Tags
- Tone Control and EQs
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 9 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 4 | ||||
| ×2 | 100.0k | 100k | op-amp gain resistors, low-pass and high-pass stages; read from the schematic by eye | |
| ×3 | 22.0k | 22k | two to ground at the filter stages, one feedback in the mixer; read from the schematic by eye | |
| ×2 | 10.0k | 10k | summing resistors into the mixer; read from the schematic by eye | |
| ×1 | 1.0k | 1k | mixer gain resistor to ground; read from the schematic by eye | |
| Capacitors 3 | ||||
| ×3 | 10.0n | 10n | two in the low-pass stage, one in the high-pass stage; read from the schematic by eye | |
| ×1 | 100.0n | 100n | second high-pass capacitor (the other is 10.0n as drawn); read from the schematic by eye | |
| ×1 | 10.0u | 10u | output coupling; read from the schematic by eye | |
| ICs 1 | ||||
| ×3 | LF351 | LF351 | drawn LF351/NS; one per stage; read from the schematic by eye | |
| Potentiometers 1 | ||||
| ×4 | 50.0k | 50k | Potentiometer | wired as variable resistors, two per filter; probably ganged pairs to tune the notch; read from the schematic by eye |