125B · 1 knob
Glenn
Based on the Spaceman Effects Atlas III booster· 2 other boards clone it
From the vendor
Clone PCB of the Spaceman Effects Atlas III booster. This board features the phase switch on the outside for added convenience. Not really sure why Spaceman hid this feature on the inside, but hey... doesn't mean we have to. Anyway, just a great "on all the time" type booster that makes everything sound better.
Schematic
The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 31 rows
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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| R1 | 1ksch | 1k | ||
| R2 | 1msch | 1M | ||
| R3 | 3K9sch | 3.9k | ||
| R4 | 1msch | 1M | ||
| R5 | 1msch | 1M | ||
| R6 | 10ksch | 10k | ||
| R7 | 10ksch | 10k | ||
| R8 | 18ksch | 18k | ||
| R9 | 1msch | 1M | ||
| R10 | 1msch | 1M | ||
| R11 | 1msch | 1M | ||
| R12 | 30ksch | 30k | ||
| Capacitors 8 | ||||
| C2 | 100nsch | 100n | ||
| C3 | 330psch | 330p | ||
| C4 | 100nsch | 100n | ||
| C5 | 100nsch | 100n | ||
| C6 | 180nsch | 180n | ||
| C7 | 180nsch | 180n | ||
| C8 | 1n2sch | 1.2n | ||
| C1 | 100uocr | 100u | ||
| Diodes 1 | ||||
| D1 | 1N4148sch | 1N4148 | ||
| Transistors 5 | ||||
| Q5 | BS170sch | BS170 | ||
| Q6 | 2N3904sch | 2N3904 | ||
| Q7 | bs250sch | BS250 | ||
| Q1 | LND150N3ocr | LND150N3 | ||
| Q4 | LND150N3ocr | LND150N3 | ||
| Potentiometers 1 | ||||
| Boost | B100Ksch | B100k | Potentiometer | |
| Switches 4 | ||||
| SW2 | SPDTocr | SPDT | ||
| SW1 | SPDTocr | SPDT | ||
| Bypass | DPDTocr | DPDT | ||
| SW | SPDTocr | SPDT | ||
Other boards based on the Spaceman Effects Atlas III booster
- Spaceman Effects Atlas III Booster Dirtbox Layouts
- Spaceman Atlas III Effects Layouts (blog)