MRG FOLD (Bare PCB) Assembly Guide
Bill of Materials
This is the required bill of materials if you bought the PCBs+Panel+IC only. All components listed below are already included in the full DIY kit.
Resistors usually included in the kit are usually Multicomp MF12 Series.
Note: The folding circuit (centered around the TLV274IN) is highly sensitive to resistor values. The use of 1% tolerance resistors is required.
| Component | Quantity | Notes |
|---|---|---|
| ICs: | ||
| TL074BCN | 1 | PDIP |
| TL072BCP | 1 | PDIP |
| TLV274IN | 1 | PDIP |
| Resistors: | ||
| 470 | 1 | |
| 7K5 | 1 | |
| 11K | 4 | |
| 13K | 2 | |
| 15K | 1 | |
| 18K | 1 | |
| 20K | 1 | |
| 24K | 1 | |
| 51K | 1 | |
| 56K | 1 | |
| 91K | 1 | |
| 100K | 3 | |
| 110K | 2 | |
| 160K | 1 | |
| 220K | 1 | |
| 360K | 3 | |
| Ceramic Capacitors: | ||
| 100nF (104) | 7 | MLCC 5mm pitch |
| 1uF (105) | 1 | MLCC 5mm pitch |
| 10p (100) | 3 | MLCC 5mm pitch |
| Other Capacitors: | ||
| 22uF Electrolitic Capacitor | 2 | Rubycon 25ZLG22MEFC5X7 |
| Other Components: | ||
| 5V1 Zener | 2 | DO-35 |
| L78L05 | 1 | 5V Voltage Regulator |
| L79L05 | 1 | -5V Voltage Regulator |
| 14 Pin 2 Row Header | 2 | 2x7 2.54mm pitch |
| 14 Pin 2 Row Socket | 2 | 2x7 2.54mm pitch |
| 10 Pin 2 Row Header | 1 | 2x5 2.54mm pitch |
| B100K | 4 | Alpha 9mm T18 Potentiometer |
| PJ398SM 3.5mm Jacks | 4 | “Thonkiconn” |