1590B · 3 knobs
Systech Harmonic EnergizerVerified
Based on the Systech Harmonic Energizer· 6 other boards clone it
From the post
Not a lot of info on this old pedal, but it was a request so I'll let Vince tell you about it! :o)
I've omitted the reverse polarity protection part of the circuit to keep it more 1590B friendly, but if you do want to add some protection just put a 1N5817 or 1N4001 in series with the 9V supply. The effect includes a buffered bypass and so only a SPDT latching stomp is required, or a DPDT if you want LED indication.
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 21 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 2n at the left edge below Q1: printed clearly, unusual value
- 5K1 at top left and 20K below the IC's left side: printed clearly, unusual values
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×4 | 10K | 10k | read from the layout by eye | |
| ×3 | 1K | 1k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×1 | 5K1 | 5.1k | read from the layout by eye | |
| ×1 | 27K | 27k | read from the layout by eye | |
| ×1 | 10M | 10M | read from the layout by eye | |
| ×1 | 20K | 20k | read from the layout by eye | |
| ×1 | 2K2 | 2.2k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 510R | 510 | read from the layout by eye | |
| Capacitors 5 | ||||
| ×2 | 47n | 47n | read from the layout by eye | |
| ×2 | 100n | 100n | read from the layout by eye | |
| ×1 | 2n | 2n | read from the layout by eye | |
| ×6 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47u | 47u | electrolytic; read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| IC | TL074 | TL074 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | A50K | A50k | Potentiometer | read from the layout by eye |
| BDW | B5K | B5k | Potentiometer | read from the layout by eye |
| Freq | A50K | A50k | Potentiometer | read from the layout by eye |
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