125B · 2 knobs
From the vendor
Controls
• Gain
• Volume
Details
• Designed for a 125B enclosure with top-mounted jacks
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PedalPCB is in no way affiliated with 1981 Inventions.
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 48 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 23 | ||||
| R1 | 2M2 | 2.2M | Resistor, 1/4W | |
| R2 | 10K | 10k | Resistor, 1/4W | |
| R3 | 100K | 100k | Resistor, 1/4W | |
| R4 | 150K | 150k | Resistor, 1/4W | |
| R5 | 100K | 100k | Resistor, 1/4W | |
| R6 | 10K | 10k | Resistor, 1/4W | |
| R7 | 100K | 100k | Resistor, 1/4W | |
| R8 | 4K7 | 4.7k | Resistor, 1/4W | |
| R9 | 475R | 475 | Resistor, 1/4W | |
| R10 | 220K | 220k | Resistor, 1/4W | |
| R11 | 1K | 1k | Resistor, 1/4W | |
| R12 | 22K | 22k | Resistor, 1/4W | |
| R13 | 100K | 100k | Resistor, 1/4W | |
| R14 | 39K | 39k | Resistor, 1/4W | |
| R15 | 6K81 | 6.81k | Resistor, 1/4W | |
| R16 | 10K | 10k | Resistor, 1/4W | |
| R17 | 10K | 10k | Resistor, 1/4W | |
| R18 | 100K | 100k | Resistor, 1/4W | |
| R19 | 475R | 475 | Resistor, 1/4W | |
| R100 | 10R | 10 | Resistor, 1/4W | |
| R101 | 22K | 22k | Resistor, 1/4W | |
| R102 | 22K | 22k | Resistor, 1/4W | |
| CLR | 4K7 | 4.7k | Resistor, 1/4W | * LED current limiting resistor |
| Capacitors 17 | ||||
| C1 | 220n | 220n | Film capacitor, 7.2 x 5.0mm | |
| C2 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C3 | 220n | 220n | Film capacitor, 7.2 x 5.0mm | |
| C4 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C5 | 100p | 100p | Ceramic capacitor | |
| C6 | 220n | 220n | Film capacitor, 7.2 x 5.0mm | |
| C7 | 47n | 47n | Film capacitor, 7.2 x 2.5mm | |
| C8 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C9 | 2n2 | 2.2n | Film capacitor, 7.2 x 2.5mm | |
| C10 | 100p | 100p | Ceramic capacitor | |
| C11 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C100 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C101 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C102 | 100u | 100u | Electrolytic capacitor, 5mm | |
| C103 | 100u | 100u | Electrolytic capacitor, 5mm | |
| C104 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C105 | 100u | 100u | Electrolytic capacitor, 5mm | |
| Diodes 3 | ||||
| D1 | 3V3 | 3V3 | Zener diode 1/2W, 3.3V | |
| D2 | 3V3 | 3V3 | Zener diode 1/2W, 3.3V | |
| D100 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| Transistors 1 | ||||
| Q1 | 2N3904 | 2N3904 | BJT transistor, NPN TO-92 | |
| ICs 2 | ||||
| IC1 | LM1458 | LM1458 | Dual op-amp, DIP8 | |
| IC2 | LM833 | LM833 | Dual op-amp, DIP8 | |
| Potentiometers 2 | ||||
| VOL | A100K | A100k | 16mm right-angle PCB mount pot | |
| GAIN | C100K | C100k | 16mm right-angle PCB mount pot | |