Enclosure not stated · 4 knobs
Systech Harmonic EnergizerVerified
Based on the Systech Harmonic Energizer· 6 other boards clone it
From the post
Simplified polarity protection with added volume control.
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 23 rows
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Check before you build · 2 values the reader of this layout was not sure of
- Electrolytic at columns 4-5, rows N-O: printed '10nuF' on a round can, read as 10uF (could be meant as 10nF)
- 20K at column 16, rows G-I: printed clearly, unusual value; the text is partly overlapped by a 10uF can but no leading digit seems hidden
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×3 | 1K | 1k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×1 | 510Ω | 510 | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 5.1K | 5.1k | read from the layout by eye | |
| ×1 | 20K | 20k | read from the layout by eye | |
| ×1 | 27K | 27k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 10M | 10M | read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×5 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; printed '10nuF'; 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 1 | ||||
| Q1 | 2N5458 | 2N5458 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL074 | TL074 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Gain | A50K | A50k | Potentiometer | read from the layout by eye |
| Freq | A50K | A50k | Potentiometer | read from the layout by eye |
| Bandwidth | B5K | B5k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
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