125B · 3 knobs
PedalPCB· PCB736
Spelunker EQ
Based on the Amptweaker Depth Finder· 1 other board clones it
- Category
- Boost
- Price
- $12.00in stock
- Tags
- 125B
From the vendor
Controls
• Resonance
• Presence
• Gain
Details
• Designed for a 125B enclosure with top-mounted jacks
The company, product and service names used in this web site are for comparative purposes only. All trademarks and registered trademarks are the property of their respective owners. This product is not manufactured or distributed by Amptweaker, LLC, maker of the Amptweaker Depth Finder. PedalPCB is in no way affiliated with Amptweaker, LLC.
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 31 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| R1 | 1M | 1M | Resistor, 1/4W | |
| R2 | 220K | 220k | Resistor, 1/4W | |
| R3 | 47K | 47k | Resistor, 1/4W | |
| R4 | 10K | 10k | Resistor, 1/4W | |
| R5 | 3K3 | 3.3k | Resistor, 1/4W | |
| R6 | 22K | 22k | Resistor, 1/4W | |
| R7 | 3K3 | 3.3k | Resistor, 1/4W | |
| R8 | 3K3 | 3.3k | Resistor, 1/4W | |
| R9 | 1K | 1k | Resistor, 1/4W | |
| R10 | 47K | 47k | Resistor, 1/4W | |
| R100 | 47R | 47 | Resistor, 1/4W | |
| R101 | 100K | 100k | Resistor, 1/4W | |
| R102 | 100K | 100k | Resistor, 1/4W | |
| CLR | 4K7 | 4.7k | Resistor, 1/4W | * LED current limiting resistor |
| Capacitors 10 | ||||
| C1 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 220n | 220n | Film capacitor, 7.2 x 5.0mm | |
| C3 | 4n7 | 4.7n | Film capacitor, 7.2 x 2.5mm | |
| C4 | 560p | 560p | Ceramic capacitor | |
| C5 | 1u | 1u | Electrolytic capacitor, 5mm | |
| C6 | 220n | 220n | Film capacitor, 7.2 x 5.0mm | |
| C7 | 22u | 22u | Electrolytic capacitor, 5mm | |
| C100 | 100u | 100u | Electrolytic capacitor, 5mm | |
| C101 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C102 | 22u | 22u | Electrolytic capacitor, 5mm | |
| Diodes 3 | ||||
| D1 | 1N5240B | 1N5240B / 10V | Zener diode, 10V 1/2W | |
| D2 | 1N5240B | 1N5240B / 10V | Zener diode, 10V 1/2W | |
| D100 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | Dual op-amp, DIP8 | |
| Potentiometers 2 | ||||
| Choose | between interna | BETWEEN INTERNA | l trimpot or external potentiometer, do not | install both |
| GAIN | C250K | C250k | 16mm right-angle PCB mount pot | |
| Other 1 | ||||
| PRESENCE C500K | 16mm right-angle PCB mount pot | 16MM RIGHT-ANGLE PCB MOUNT POT | ||
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