Enclosure not stated · 2 knobs
Tesla AYZ-030 Graphic Equalizer
Based on the Tesla AYZ-030 Graphic Equalizer
- Category
- EQ / Filter
- Controls
- All Eq Bands · Volume
- Build
- Vero· 22×19· 26 cuts, 10 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Eq, Tesla
From the post
An old graphic equalizer from the former Chechoslovakia. For more fidelity, LM741 could with subbed with TL071 or other low noise single op amps.
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 36 rows
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Check before you build · 2 values the reader of this layout was not sure of
- Pot tapers printed as '100kN' (EQ bands, legend: try 100kW or 100kB) and '100kG' (volume, legend: try 100kB): N and G are not A/B/C taper letters, entered letter-first as printed
- Resistor count is dense (10x 330K, 5x 33K, 5x 2,2K); several bodies overlap neighbours, counted twice from overlapping tiles
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×10 | 330K | 330k | read from the layout by eye | |
| ×5 | 33K | 33k | read from the layout by eye | |
| ×5 | 2.2K | 2.2k | read from the layout by eye | |
| ×2 | 560K | 560k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 270K | 270k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 12 | ||||
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 680pF | 680p | read from the layout by eye | |
| ×1 | 1.5nF | 1.5n | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×1 | 6.8nF | 6.8n | read from the layout by eye | |
| ×3 | 10nF | 10n | read from the layout by eye | |
| ×1 | 33nF | 33n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 150nF | 150n | read from the layout by eye | |
| ×1 | 330nF | 330n | read from the layout by eye | |
| ×3 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 6 | ||||
| Q1 | BC149 | BC149 | try BC549 or BC109; read from the layout by eye | |
| Q2 | BC149 | BC149 | try BC549 or BC109; read from the layout by eye | |
| Q3 | BC149 | BC149 | try BC549 or BC109; read from the layout by eye | |
| Q4 | BC149 | BC149 | try BC549 or BC109; read from the layout by eye | |
| Q5 | BC149 | BC149 | try BC549 or BC109; read from the layout by eye | |
| Q6 | BC149 | BC149 | try BC549 or BC109; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LM741 | LM741 | read from the layout by eye | |
| Potentiometers 6 | ||||
| 80 Hz | N100K | N100K | Potentiometer | 100kN, try 100kW or 100kB; read from the layout by eye |
| 200 Hz | N100K | N100K | Potentiometer | 100kN, try 100kW or 100kB; read from the layout by eye |
| 600 Hz | N100K | N100K | Potentiometer | 100kN, try 100kW or 100kB; read from the layout by eye |
| 1.5 kHz | N100K | N100K | Potentiometer | 100kN, try 100kW or 100kB; read from the layout by eye |
| 4 kHz | N100K | N100K | Potentiometer | 100kN, try 100kW or 100kB; read from the layout by eye |
| Volume | G100K | G100K | Potentiometer | 100kG, try 100kB; read from the layout by eye |