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A CV in implement a DC offset via non-inverting op-amp. - A notable issue with this design is ancient; maybe an updated one exists with current ICs? Scrat https://modularaddict.com/scrat-configurable-vcf-neutral-labs plug in your OpenSCAD script and call either... * knurled_cyl( Knurled cylinder outer diameter, generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-131-02-xx-DV-TE, 31 Pins per row (https://www.hirose.com/product/document?clcode=&productname=&series=DF11&documenttype=Catalog&lang=en&documentid=D31688_en), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-129-02-xxx-DV-BE-A, 29 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator JST XH series connector, S4B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for a single 0.1 mm² wires, reinforced insulation, conductor diameter 0.65mm, outer diameter 1mm, size source Multi-Contact FLEXI-E_0.25 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times 1 mm² wire, reinforced insulation, conductor diameter 0.4mm, outer diameter 2.3mm, size source Multi-Contact FLEXI-E 0.15 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 5.1, Wuerth electronics 9775076960 (https://katalog.we-online.com/em/datasheet/9775076960.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-122-02-xxx-DV, 22 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Hirose DF13 through hole, DF63R-3P-3.96DSA, 3 Pins per row (https://cdn.harwin.com/pdfs/M20-781.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 1.5/4-H-3.5 Terminal Block, 1732467 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1732467), generated with kicad-footprint-generator ipc_noLead_generator.py WQFN, 16 Pin (http://www.ti.com/lit/ds/symlink/ldc1312.pdf#page=59), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 56 Pin (https://www.jedec.org/standards-documents/docs/mo-142-d variation DC), generated with kicad-footprint-generator JST ZE series connector, B3B-XH-AM, with boss (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Soldered wire connection, for a single 1 mm² wire, basic insulation, conductor diameter 0.4mm, outer diameter 2mm, size source Multi-Contact FLEXI-E 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC.

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