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Sound Lab Mini-Synth - Eurorack SMD Edition

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1 2 3 4 5 6 1 2 3 4 5 6 A B C D A B C D Date: 2019-05-22 KiCad E.D.A. kicad (5.1.2)-1 Rev: 1.4 Size: A4 Id: 1/9 Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: mfos slms.sch Sheet: / David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/) VCO slms_vco.sch CV1 AR LFO VCO1 CV2 VCO2 LFO slms_lfo.sch LFO LFO LFO Noise Gen slms_noise.sch Noise Noise Attack Release Envelope Generator slms_argen.sch ExtGateIn AR AR AR Power Supply slms_power.sch VCA slms_vca.sch BP LP AR LFO VCF slms_vcf.sch VCO1 VCO2 Noise AR LFO BP LP LFO AR S T J2 CV1 S T J3 CV2 GND GND CV1 CV2 LFO AR Noise VCO1 VCO2 LP BP LP BP VCO1 VCO2 S T J4 ExtGateIn GND EGI CV1 CV2 Hardware parts hardware.sch Revision History: 1.0: initial release 1.1: * reversed Attack / Decay pots * removed connection to GND on U3A pin 1 * changed Q8 footprint (BEC instead of CBE) * changed Jack footprints to WQP-PJ398SM 1.2: * changed NPN BC547 to BC847BS (Dual matched NPN in SOT363) * changed THT capacitors to SMT (C3, C13, C16, C18) * changed Q101 from 2N1711 to 2N3904 1.3: * removed Regulators 78L09 and 79L09 due to availability issues * Added Decoupling Capacitors 1.4: * modified Sync circuitry, according to PLUS * improved White Noise generator
Transcript
Sound Lab Mini-Synth - Eurorack SMD EditionA
B
C
D
A
B
C
D
Rev: 1.4Size: A4 Id: 1/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: mfos slms.sch Sheet: / David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
VCO
slms_vco.sch
CV1
AR
LFO
VCO1
hardware.sch
Revision History: 1.0: initial release 1.1: * reversed Attack / Decay pots * removed connection to GND on U3A pin 1 * changed Q8 footprint (BEC instead of CBE) * changed Jack footprints to WQP-PJ398SM 1.2: * changed NPN BC547 to BC847BS (Dual matched NPN in SOT363) * changed THT capacitors to SMT (C3, C13, C16, C18) * changed Q101 from 2N1711 to 2N3904 1.3: * removed Regulators 78L09 and 79L09 due to availability issues * Added Decoupling Capacitors 1.4: * modified Sync circuitry, according to PLUS * improved White Noise generator
1 2 3 4 5 6
1 2 3 4 5 6
A
B
C
D
A
B
C
D
Rev: 1.4Size: A4 Id: 2/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: slms_vco.sch Sheet: /VCO/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
+5
-6
7
B 5
5VBF545A/C, MMBFJ310, MMBFJ211, MMBFJ202, MMBF4392LT1G, MMBFJ309LT1G, BFR31
Sync circuitry causes a detune on VCO2 at higher freqs (starting at 700-800 Hz)
D6
1N4148
D11
1N4148
1V/Oct adjust
A
B
C
D
A
B
C
D
Rev: 1.4Size: A4 Id: 3/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: slms_lfo.sch Sheet: /LFO/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
1 -2
GND
Use DPDT on S18 to force "Triangle" selection when on "Rect" Output (Or else, Rect is only spikes)
See Simulation: http://tinyurl.com/y8nu4wbl
A
B
C
D
A
B
C
D
Rev: 1.4Size: A4 Id: 4/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: slms_noise.sch Sheet: /Noise Gen/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
+10
8
-9
TP401 Noise
V1.2 - Q101 changed from 2N1711 to 2N3904 V1.3 - Q7 and Q101 swapped V1.4 - Use improved noise generator from SLMS Extras/Plus
Use either Q7 or Q101 (different pinout!)
OR
R95 not used
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D
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Rev: 1.4Size: A4 Id: 5/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: slms_argen.sch Sheet: /Attack Release Envelope Generator/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
ExtGateIn
D7
1N4148
Attack
Release
Trig'd
Gated
ed
C113
100n
GND
+ 12
V
Vmax = 15V Vd8 = 9V Vd7 = 0.7V Vr199 = Vextgate - Vd7 - Vd8 = 15 - 0.7 - 9 = 5.3V Ir199 = Vr199 / R199 = 5.3 / 10k = 0.53mA
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1 2 3 4 5 6
A
B
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D
A
B
C
D
Rev: 1.4Size: A4 Id: 6/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: slms_power.sch Sheet: /Power Supply/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
GND
C16
100u
C18
100u
+12V
-12V
C19
100n
C20
100n
K101
B1 BEAD-FERRITE
V1.3 - Removed L78L09 (U101) and L79L09 (U102) - Added D101 and D102 (1N4007) - Added optionnal Bead Ferrites B1 and B2
GND
+ 12
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D
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Rev: 1.4Size: A4 Id: 7/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: slms_vca.sch Sheet: /VCA/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
BP
A
B
C
D
A
B
C
D
Rev: 1.4Size: A4 Id: 8/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: slms_vcf.sch Sheet: /VCF/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
VCO1
VCO2
Noise
AR
LFO
BP
LP
C111
100n
C112
100n
+ 12
A
B
C
D
A
B
C
D
Rev: 1.4Size: A4 Id: 9/9
Title: Sound Lab Mini-Synth - Eurorack SMD Edition File: hardware.sch Sheet: /Hardware parts/ David Haillant Based on Ray Wilson's design (http://musicfromouterspace.com/)
Front panel
Sources for Special Hardware:

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