Enclosure not stated · 2 knobs
Tyco Brahe OctaviaVerified
Based on the Roger Mayer Octavia· 27 other boards clone it
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 27 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 180K | 180k | read from the layout by eye | |
| ×1 | 220Ω | 220 | read from the layout by eye | |
| ×1 | 820K | 820k | read from the layout by eye | |
| ×1 | 680K | 680k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 1.2K | 1.2k | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 6 | ||||
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 150pF | 150p | read from the layout by eye | |
| ×2 | 33uF | 33u | electrolytic; read from the layout by eye | |
| ×2 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N34A | 1N34A | Germanium, 1N34A, 1N270 etc.; read from the layout by eye | |
| D2 | 1N34A | 1N34A | Germanium, 1N34A, 1N270 etc.; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | 1N5817 or 1N4001; read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | 2N5087 | 2N5087 | High Gain PNP Silicon, try 2N5087, BC559; read from the layout by eye | |
| Q2 | 2N4401 | 2N4401 | Medium-low gain NPN Silicon, try 2N4401, 2N3904, 2N2222; read from the layout by eye | |
| Q3 | 2N4401 | 2N4401 | Medium-low gain NPN Silicon, try 2N4401, 2N3904, 2N2222; read from the layout by eye | |
| Transformers 1 | ||||
| Transformer | 42TM022 | 42TM022 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Boost | A1K | A1k | Potentiometer | read from the layout by eye |
| Volume | A500K | A500k | Potentiometer | read from the layout by eye |
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