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Lectric-FX

SpaceHarp Phaser

Based on the EHX Small Stone v1

Category
Phaser
Controls
Speed
Price
$12.99in stock
Buy the PCB at Lectric-FX Build document

From the vendor

The SpaceHarp is a 4-stage phaser based on the early EHX Small Stone v1, utilizing 3 LM13700 OTA chips rather than out-of-production CA3094’s. Features include an internally-switchable jfet-buffered input, and trimmable lpb-1 boost on the output for crystal clean makeup volume.

Changes for V1.2: pcb error for C8 has been repaired, the color toggle now switches up & down rather than side to side.

Schematic

The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 68 rows

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RefValueNormalizedTypeNotes
Resistors 41
R1100k100kOCR
R21M1MOCR
R310k10kOCR
R41k1kOCR
R527k27kOCR
R627k27kOCR
R727k27kOCR
R8270k270kOCR
R9100r100OCR
R1015k15kOCR
R111k81.8kOCR
R1227k27kOCR
R1327k27kOCR
R1410k10kOCR
R151k81.8kOCR
R1627k27kOCR
R1727k27kOCR
R1810k10kOCR
R191k81.8kOCR
R2027k27kOCR
R2127k27kOCR
R2210k10kOCR
R231k81.8kOCR
R2427k27kOCR
R2527k27kOCR
R2610k10kOCR
R2710k10kOCR
R28180k180kOCR
R29100k100kOCR
R30100k100kOCR
R31270k270kOCR
R3210k10kOCR
R3310k10kOCR
R3410k10kOCR
R351M1MOCR
R3610k10kOCR
R371M1MOCR
R40470k470kOCR
R4147k47kOCR
R42390r390OCR
R4310k10kOCR
Capacitors 18
C26n86.8nOCR
C36n86.8nOCR
C41u1uOCR
C5100n100nOCR
C76n86.8nOCR
C8470u470uOCR
C96n86.8nOCR
C1010u10uOCR
C1147n47nOCR
C1347u47uOCR
C14100n100nOCR
C16100n100nOCR
C1847u47uOCR
C16n86.8nOCR
C1214u14uOCR
C17100n100nOCR
C66n86.8nOCR
C151u1uOCR
Diodes 1
D11n40011N4001OCR
Transistors 4
Q22N50882N5088OCR
Q32N54572N5457OCR
Q12N50872N5087OCR
Q42N50882N5088OCR
ICs 3
IC2LM13700NLM13700NOCR
IC3LM13700NLM13700NOCR
IC1LM13700NLM13700NOCR
Potentiometers 1
SPEED1MCC1MPotentiometerOCR