1590B · 6 knobs
JFETwin Preamp
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- Category
- Preamp / Amp-in-a-box
- Price
- $2.50in stock
From the vendor
Clean channel guitar preamp on SMD JFETs. Fender Twin style sound. Perfectly "friendly" with the overdrive or distortion pedals. Power supply: regulated mains adapter 9 VDC. The dimensions of the PCB 50 x 45 mm. Enclosure type: Hammond 1590B.
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 26 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×1 | 3k3 | 3.3k | Metal film resistor 1/4W 3k3 | |
| ×2 | 10k | 10k | Metal film resistor 1/4W 10k | |
| ×3 | 22k | 22k | Metal film resistor 1/4W 22k | |
| ×1 | 47k | 47k | Metal film resistor 1/4W 47k | |
| ×3 | 100k | 100k | Metal film resistor 1/4W 100k | |
| ×4 | 1M | 1M | Metal film resistor 1/4W 1M | |
| Capacitors 8 | ||||
| ×1 | 220p | 220p | Ceramic disc capacitor 220p 1kV | Ceramic disc capacitor |
| ×2 | 470p | 470p | Ceramic disc capacitor 470p 1kV | Ceramic disc capacitor |
| ×2 | 22n | 22n | Polyester film capacitor (R=5mm) 22n 63V | Polyester film capacitor |
| ×2 | 100n | 100n | Polyester film capacitor (R=5mm) 100n 63V | Polyester film capacitor |
| ×2 | 470n | 470n | Polyester film capacitor (R=5mm) 470n 63V | Polyester film capacitor |
| ×2 | 1u | 1u | Polyester film capacitor (R=5mm) 1u 50V | Polyester film capacitor |
| ×1 | 47u | 47u | Electrolytic capacitor 47u 16V | Electrolytic capacitor |
| ×1 | 100u | 100u | Electrolytic capacitor 100u 16V | Electrolytic capacitor |
| Diodes 2 | ||||
| ×1 | 1N4001 | 1N4001 | Diode 1N4001 | |
| ×1 | 1N4148 | 1N4148 | Diode 1N4148 | |
| Transistors 2 | ||||
| ×2 | J201 | J201 | Transistor MMBF J201 | SMD (MMBF) |
| ×3 | 2N5457 | 2N5457 | Transistor MMBF 2N5457 | SMD (MMBF) |
| Potentiometers 5 | ||||
| ×1 | B25k | B25k | Potentiometer RV16LN-15kQ B25k | |
| ×1 | A100k | A100k | Potentiometer RV16LN-15kQ A100k | |
| ×1 | B250k | B250k | Potentiometer RV16LN-15kQ B250k | |
| ×1 | A500k | A500k | Potentiometer RV16LN-15kQ A500k | |
| ×1 | A1M | A1M | Potentiometer RV16LN-15kQ A1M | |
| Trimmers 1 | ||||
| ×3 | 20k | 20k | Trimmer potentiometer 3296W 20k | |
| Switches 1 | ||||
| ×1 | Toggle switch SMTS-103 On-Off-On | TOGGLE SWITCH SMTS-103 ON-OFF-ON | Toggle switch SMTS-103 On-Off-On | |
| LEDs 1 | ||||
| ×1 | LED | LED | LED 5mm | 5mm; indication |