Enclosure not stated · 2 knobs
Little Angel ChorusVerified
Based on the Frequency Central Little Angel· 2 other boards clone it
- Category
- Vibrato / Chorus
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Chorus
From the post
Here's a simple, fairly low parts count chorus based around a PT2399, designed by Rick Holt (aka Frequency Central) from the DIYStompboxes forum. I've drawn 2 versions, one with board-mounted pots, and one off-board pots. The 2nd IC (NE5532 in the layout) can be any dual op-amp (a TL072 works well), just socket and experiment. The board is fairly large, so you might want to use long leg right angle PCB mount pots and mount them from the component side to save space. Here's a quick sound sample.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 22 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×1 | 33K | 33k | read from the layout by eye | |
| ×8 | 10K | 10k | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 330K | 330k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×2 | 220K | 220k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×3 | 10nF | 10n | read from the layout by eye | |
| ×2 | 1nF | 1n | read from the layout by eye | |
| ×6 | 100nF | 100n | read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 3 | ||||
| ×1 | PT2399 | PT2399 | read from the layout by eye | |
| ×1 | NE5532 | NE5532 | read from the layout by eye | |
| ×1 | 78L05 | 78L05 | regulator, named on the wiring diagram; read from the layout by eye | |
| Potentiometers 2 | ||||
| Depth | B500K | B500k | Potentiometer | read from the layout by eye |
| Speed | B100K | B100k | Potentiometer | read from the layout by eye |
Other boards based on the Frequency Central Little Angel
- Cherub Chorus Fuzz Dog · 1590B · £39.60
- Little Angel JMK PCBs · $12.00