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2 layers365.8 × 153.7 mmMicrosynth, the printed circuit board in 3D

Microsynth

icnagy/pe_microsynth

Practical Electronics June 1982 MICROSYNTH Part 1 by A.R. Bradford MSc page 18

Open in PCBKitView on GitHub.kicad_pcb
Size
365.8 × 153.7 mm
Copper layers
2
Thickness
1.6 mm
Parts
280
Nets
279
Pads
900
Tracks, vias
1,964, 62
Pours
2
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
2 Jan 2020
Updated
29 May 2023

Overview

Microsynth is an open-source printed circuit board by icnagy, from the icnagy/pe_microsynth repository on GitHub. It is a 2-layer board of 365.8 × 153.7 mm with 280 parts on 279 nets, routed with 1,964 tracks and 62 vias.

It is built around the LF351N and BC548. Its parts include 130 resistors, 34 capacitors, 17 ICs, 17 switches and 10 diodes.

Main components

2

README

README.md

PE Microsynth / Clef B30

Redrawn in KiCad.

Practical Electronics June 1982 MICROSYNTH Part 1 by A.R. Bradford MSc page 18

Practical Electronics July 1982 MICROSYNTH Part 2 by A.R. Bradford MSc page 38

Practical Electronics August 1982 MICROSYNTH Part 3 by A.R.Bradford MSc page 36

Schematics

Figure 4. Controller, shaper and sample and hold elements of circuit Figure 5. VCOs and sub octave generator Figure 6. VCA, VCF, PA and PSU

Parts

280
QtyValueFootprintReferences
2110kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR1, R47, R48, R49, R50, R60, R61, R70, R72, R111, R114, R115, R118, R132, R133, R149 +5
11SW_SPDTmicrosynth:11-SS-22-701CSW5, SW7, SW10, SW11, SW14, SW15, SW16, SW17, SW18, SW19, SW20
101N914Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD1, D2, D3, D4, D6, D7, D8, D9, D10, D11
1047kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR43, R64, R65, R97, R98, R101, R119, R120, R125, R126
10LM741Package_DIP:DIP-8_W7.62mm_LongPadsU7, U9, U10, U11, U12, U13, U16, U17, U18, U19
9100Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR53, R54, R96, R109, R110, R112, R113, R128, R129
910nCapacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2C6, C8, C9, C10, C13, C15, C17, C18, C20
91MResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR28, R37, R67, R79, R83, R93, R94, R131, R150
91kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR30, R74, R88, R91, R104, R121, R137, R138, R153
8100kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR44, R52, R55, R56, R59, R68, R139, R154
6100kPotentiometer_THT:Potentiometer_Bourns_3296W_VerticalRV1, RV11, RV15, RV19, RV22, RV25
6100nCapacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2C4, C7, C14, C21, C25, C33
633kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR29, R58, R69, R103, R122, R127
6MountingHoleMountingHole:MountingHole_3.2mm_M3H1, H2, H3, H4, H5, H6
6SW_DP3Tmicrosynth:11-SS-23-832CSW1, SW3, SW4, SW6, SW8, SW9
510kPotentiometer_THT:Potentiometer_Bourns_3296W_VerticalRV4, RV5, RV8, RV13, RV17
5BC548Package_TO_SOT_THT:TO-92L_Inline_WideQ3, Q6, Q7, Q8, Q9
4100kLINmicrosynth:Pot_16mm_NoDet_RV16AF-4ARV12, RV14, RV18, RV21
410MResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR31, R32, R62, R63
415kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR33, R51, R90, R143
4220nCapacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2C24, C26, C27, C28
44.7kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR57, R86, R116, R117
312kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR106, R107, R108
31kLINmicrosynth:Pot_16mm_NoDet_RV16AF-4ARV16, RV23, RV28
3390kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR36, R46, R46-1
3470kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR66, R80, R81
347kPotentiometer_THT:Potentiometer_Bourns_3296W_VerticalRV6, RV7, RV7-1
3MountingHole_PadConnector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_VerticalH7, H8, H9
210KResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR140, R141
210kLOGmicrosynth:Pot_16mm_NoDet_RV16AF-4ARV20, RV24
215nCapacitor_THT:C_Rect_L7.2mm_W3.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2C16, C19
2180kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR35, R45
2220kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR105, R130
22MLOGmicrosynth:Pot_16mm_NoDet_RV16AF-4ARV2, RV10
24.7u 10VCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC29, C31
24.7u 25VCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC12, C32
24016Package_DIP:DIP-14_W7.62mm_LongPadsU4, U14
2470Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR145, R146
256kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR152, R152_1
26.8kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR124, R151
2680p polystyreneCapacitor_THT:C_Axial_L12.0mm_D6.5mm_P15.00mm_HorizontalC22, C23
268kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR134, R135
28.2kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR71, R85
2BC212 PNPPackage_TO_SOT_THT:TO-92L_Inline_WideQ4, Q5
2LF351NPackage_DIP:DIP-8_W7.62mm_LongPadsU6, U15
1 5.6kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR99
11.2MResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR78
11.8kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR95
110Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR82
1100u 25VCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC3
110kLOGConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalRV26
1130Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR40
1150kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR136
115KResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR34
11MLOGmicrosynth:Pot_16mm_NoDet_RV16AF-4ARV9
11k2Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR27
11uCapacitor_THT:C_Rect_L7.2mm_W7.2mm_P5.00mm_FKS2_FKP2_MKS2_MKP2C1
11u 25VCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC11
12.2kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR148
12.7Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR144
1220Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR92
122KResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR38
122KPotentiometer_THT:Potentiometer_Bourns_3296W_VerticalRV3
122kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR42
122nCapacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2C2
129kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR142
13.9MResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR123
13.9kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR76
139kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR41
14.7kLOGPotentiometers:Potentiometer_Bourns_PTV09A-2_VerticalRV27
14.7u 35VCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC30
14001Package_DIP:DIP-14_W7.62mm_LongPadsU8
14011Package_DIP:DIP-14_W7.62mm_LongPadsU3
14013Package_DIP:DIP-14_W7.62mm_LongPadsU22
144kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR77
1470nCapacitor_THT:C_Rect_L7.2mm_W4.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2C5
1470u 25VCapacitor_THT:CP_Radial_D10.0mm_P5.00mmC34
15.6kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR102
1680Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR2
182kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR100

The 253 most common of 280 parts.

Questions

How big is the Microsynth PCB?

It measures 365.8 × 153.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Microsynth use?

280 parts, built around the LF351N and BC548. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Microsynth KiCad files?

From the icnagy/pe_microsynth repository on GitHub, at the commit this page was made from: the board is microsynth/microsynth.kicad_pcb and its schematic microsynth/Envelope.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Microsynth design in my own project?

Its repository states no licence, so its author keeps all rights: ask icnagy before reusing the design.

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