1590BB2 · 5 knobs
Mandragora Tube Overdrive
Based on the Bogner Snorkler preamp· 1 other board clones it
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- Category
- Overdrive
- Price
- $14.00in stock
- Tags
- kit available
From the vendor
Tube overdrive pedal, designed on the basis of the preamplifier schematic circuit of the Bogner Snorkler tube guitar head. Three control knobs (Gain, Volume and Tone). In addition, there are two options activated by the corresponding toggle switches - Gain Mode (Low/High) and Bass Boost. Two vacuum tube ECC83/12AX7 or 6Н2П-ЕВ are used. 6Н2П-ЕВ/12AX7 switchable heater via jumpers on the tube board. True bypass (relay). Power supply: regulated mains adapter 12 VDC (load current of 1 A or more). To power the tube plates an internal DC-DC high voltage boost power converter is used (Nixie type). The dimensions of the main PCB 84 x 100 mm. Enclosure type: Hammond 1590BB2. Also sold as a kit (available soon).
Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 46 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| ×3 | 1k | 1k | Metal film resistors 0.6W-S 1k | |
| ×1 | 1k5 | 1.5k | Metal film resistors 0.6W-S 1k5 | |
| ×2 | 3k3 | 3.3k | Metal film resistors 0.6W-S 3k3 | |
| ×3 | 10k | 10k | Metal film resistors 0.6W-S 10k | |
| ×3 | 100k | 100k | Metal film resistors 0.6W-S 100k | |
| ×1 | 150k | 150k | Metal film resistors 0.6W-S 150k | |
| ×1 | 220k | 220k | Metal film resistors 0.6W-S 220k | |
| ×2 | 330k | 330k | Metal film resistors 0.6W-S 330k | |
| ×1 | 470k | 470k | Metal film resistors 0.6W-S 470k | |
| ×6 | 1M | 1M | Metal film resistors 0.6W-S 1M | |
| ×1 | 100k | 100k | Metal film resistors 1W-S 100k | |
| ×1 | 120k | 120k | Metal film resistors 1W-S 120k | |
| ×2 | 330k | 330k | Metal film resistors 1W-S 330k | |
| ×1 | 10k | 10k | Metal oxide film resistor 1W 10k | |
| ×1 | 470k | 470k | Metal film resistor 1W 470k | |
| Capacitors 14 | ||||
| ×1 | 470p | 470p | Ceramic disc capacitor 470p 50V | Ceramic disc capacitor |
| ×1 | 1000p | 1n | Ceramic disc capacitor 1000p 1kV | Ceramic disc capacitor |
| ×1 | 10n | 10n | Ceramic disc capacitor 10n 1kV | Ceramic disc capacitor |
| ×1 | 100n | 100n | Monolithic ceramic capacitor X7R 100n 50V | Monolithic ceramic capacitor |
| ×1 | 470p | 470p | Film capacitor (R=5mm) 470p 63V | Film capacitor |
| ×1 | 1n | 1n | Polyester film capacitor (R=5mm) 1n 63V | Polyester film capacitor |
| ×1 | 2n2 | 2.2n | Film capacitor (R=5mm) 2n2 63V | Film capacitor |
| ×1 | 22n | 22n | Polyester film capacitor (R=5mm) 22n 63V | Polyester film capacitor |
| ×1 | 47n | 47n | Polyester film capacitor (R=5mm) 47n 63V | Polyester film capacitor |
| ×4 | 47n | 47n | Polyester film capacitor (R=10mm) 47n 400V | Polyester film capacitor |
| ×2 | 680n | 680n | Polyester film capacitor (R=5mm) 680n 63V | Polyester film capacitor |
| ×2 | 10u | 10u | Electrolytic capacitor 10µ 400V 105°C Low ESR | Electrolytic capacitor; d10 h20 |
| ×1 | 22u | 22u | Electrolytic capacitor 22µ 25V 85°C | Electrolytic capacitor; d5.5 h11 |
| ×1 | 470u | 470u | Electrolytic capacitor 470µ 25V 105°C | Electrolytic capacitor; d10 h14 |
| Diodes 3 | ||||
| ×1 | UF4007 | UF4007 | Diode UF4007 | |
| ×1 | 1N4007 | 1N4007 | Diode 1N4007 | |
| ×2 | 1N4148 | 1N4148 | Diode 1N4148 | |
| Transistors 3 | ||||
| ×1 | BC547C | BC547C | Transistor BC547C | |
| ×1 | BC557C | BC557C | Transistor BC557C | |
| ×1 | IRF740 | IRF740 | Transistor IRF740 | |
| ICs 1 | ||||
| ×1 | NE555 | NE555 | IC NE555 DIP8 | |
| Inductors 1 | ||||
| ×1 | Inductor CDRH127-221 MC 220uH 1,16A | INDUCTOR CDRH127-221 MC 220UH 1,16A | Inductor CDRH127-221 MC 220uH 1,16A | |
| Potentiometers 2 | ||||
| ×1 | B25k | B25k | Potentiometer Alpha RV16AF-20-15K-B25k | |
| ×2 | A1M | A1M | Potentiometer Alpha RV16AF-20-15K-A1M | |
| Switches 1 | ||||
| ×2 | Toggle switch SMTS-102-2C3 | TOGGLE SWITCH SMTS-102-2C3 | Toggle switch SMTS-102-2C3 | |
| LEDs 1 | ||||
| ×2 | Red ultra bright 3mm LED | RED ULTRA BRIGHT 3MM LED | Red ultra bright 3mm LED | |
| Other 5 | ||||
| ×2 | tube 12AX7/ECC83 | TUBE 12AX7/ECC83 | Vacuum tube 12AX7/ECC83 | or 6H2П-EB |
| ×1 | Relay HFD27/012-S | RELAY HFD27/012-S | Relay HFD27/012-S | |
| ×2 | Connector PLS-2 | CONNECTOR PLS-2 | Connector PLS-2 | DS1021-1x2 |
| ×1 | Connector PLS-40R | CONNECTOR PLS-40R | Connector PLS-40R | DS1022-1x40RDF |
| ×1 | Heat sink RAD DY-CN-020 | HEAT SINK RAD DY-CN-020 | Heat sink RAD DY-CN-020 | 22x10x15 |
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