125B · 2 knobs
Baracus V1.6
Based on the Baldwin-Burns Buzzaround· 13 other boards clone it
- Category
- Fuzz
- Price
- $10.00in stock
From the vendor
Silicon/Germanium hybrid fuzz
Loosely based on an NPN interpretation of the Baldwin Burns Buzzaround circuit, Baracus is a medium-gain silicon/germanium hybrid fuzz. The first two transistors have been replaced with common silicon bipolar junction transistors (BJT), however Q3 remains a germanium to deliver the characteristic Buzzaround tone.
Sale is for PCB only. You must source the components and build the pedal yourself. To make foot switch wiring easier, we also suggest you buy the 3pdt utility switch.
Build documentation can be found here below. Please read before purchasing.
Baracus V1.6 Build Guide
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NOT FOR COMMERCIAL USE
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 34 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| R1 | 1M | 1M | 1/4 watt resistor 2.2M Pull down res | istor |
| R2 | 470k | 470k | 1/4 watt resistor | |
| R3 | 100k | 100k | 1/4 watt resistor | |
| R4 | 10k | 10k | 1/4 watt resistor | |
| R5 | 3.3k | 3.3k | 1/4 watt resistor | |
| R6 | 100R | 100 | 1/4 watt resistor 0R-1k Affects gain | of Si transistor stage |
| R7 | 10k | 10k | 1/4 watt resistor | |
| R8 | 10k | 10k | 1/4 watt resistor | |
| R9 | 10k | 10k | 1/4 watt resistor | |
| R10 | 10k | 10k | 1/4 watt resistor | |
| CLR | 4.7k | 4.7k | 1/4 watt resistor 1k-10k Current limit | ing resistor for LED |
| Capacitors 7 | ||||
| C1 | 47n | 47n | film cap 10n - 0.1u Input cap | |
| C2 | 470p | 470p | ceramic cap 100p-2.2n Input LPF | |
| C3 | 4.7u | 4.7u | electolytic cap 2.2u-47u Bypass cap fo | r Si transistor stage. Bigger for more gain |
| C4 | 1u | 1u | film cap | |
| C5 | 0.1u | 100n | 1000pF - 0.47uF | |
| C6 | 1u | 1u | film cap | |
| C7 | 47u | 47u | electolytic cap 22u-220u Power filter | cap |
| Diodes 2 | ||||
| D1 | 1n5817 | 1N5817 | Schottky diode 1n4001, BAT41, 1n5818, etc Any suitable | polarity protection diode for 9v |
| D2 | 1n34a | 1N34A | Germanium diode 1n270, 1n949 | |
| Transistors 3 | ||||
| Q1 | BC108 | BC108 | NPN Si Transistor 2n3904, 2n2222a, BC550, etc Any medium to | high gain BJT should sound good. Double check pinouts. |
| Q2 | BC108 | BC108 | NPN Si Transistor 2n3904, 2n2222a, BC550, etc Any medium to | high gain BJT should sound good. Double check pinouts. |
| Q3 | 2n1306 | 2N1306 | NPN Ge Transistor MP38A, AC176, 2n1289, etc | |
| Potentiometers 2 | ||||
| VOL | A100K | A100k | 16mm potentiometer | |
| FUZZ | A100K | A100k | 16mm potentiometer | |
| Switches 1 | ||||
| S | PAD | PAD | Send to PCB | |
| LEDs 3 | ||||
| LED | L1 | L1 | 3mm LED | |
| L+ | PAD | PAD | LED+ | |
| L- | PAD | PAD | LED- | |
| Other 5 | ||||
| R | PAD | PAD | Return from PCB | |
| V | PAD | PAD | 9v in | |
| G | PAD | PAD | Ground | |
| VC | PAD | PAD | Q3 bias point bias probe Check bias vo | ltage here. Wire to extermal probes or meters if you're interested. |
| G1 | PAD | PAD | Ground bias probe Check bias vo | ltage here. Wire to extermal probes or meters if you're interested. |
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