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** https://hkadesign.org.uk/monotronkb.html for yet another version Alternative: CV from something else VCF MK's Diode Ladder VCF Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.analog.com/media/en/technical-documentation/data-sheets/199399fc.pdf TO-92 2-pin leads in-line, wide, drill 0.75mm (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot370-1_po.pdf SSOP56: plastic shrink small outline package http://www.ti.com/lit/ds/symlink/drv8301.pdf HVSSOP, 10 Pin (http://www.ti.com/lit/ml/mpds579b/mpds579b.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 64 Pin (https://www.infineon.com/dgdl/Infineon-MA12040-DS-v01_00-EN.pdf?fileId=5546d46264a8de7e0164b7467a3d617c#page=81), generated with kicad-footprint-generator connector Molex Panelmate series connector, B10P-VH-FB-B, shrouded (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 32 Pin (https://www.jedec.org/standards-documents/docs/mo-142-d variation EC), generated with kicad-footprint-generator connector JST EH series connector, 502585-1070 (http://www.molex.com/pdm_docs/sd/5025850270_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-149-02-xxx-DV-BE-A, 49 Pins per row (https://cdn.harwin.com/pdfs/M20-781.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 2.5/9-H-5.0-EX Terminal Block, 1719286 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1719286), generated with StandardBox.py) (Murata NCS1SxxxxSC https://power.murata.com/data/power/ncl/kdc_ncs1.pdf Isolated 1W single output DCDC-Converter, CINCON, EC6Cxx, single output, http://www.cincon.com/upload/media/data%20sheets/Data%20Sheet%20(DC)/C%20CASE/SPEC-EC6C-V12.pdf DCDC-Converter CINCON EC5BExx 18-36VDC to dual output DCDC-Converter, TRACO, TEN10-xxxx, single output, https://assets.tracopower.com/20171102100522/TEN10/documents/ten10-datasheet.pdf DCDC-Converter TRACO TMR1-xxxx Dual_output DCDC-Converter, TRACO, TMR 1-xxxx, Dual output, http://www.cincon.com/upload/media/data%20sheets/Data%20Sheet%20(DC)/B%20CASE/SPEC-EC5BE-V24.pdf DCDC-Converter CINCON EC5BExx 18-36VDC to dual output, http://www.cincon.com/upload/media/data%20sheets/Data%20Sheet%20(DC)/B%20CASE/SPEC-EC5BE-V24.pdf DCDC-Converter CINCON EC6Cxx dual or tripple output, http://www.cincon.com/upload/media/data%20sheets/Data%20Sheet%20(DC)/C%20CASE/SPEC-EC6C-V12.pdf DCDC-Converter CINCON EC5BExx 18-36VDC to dual output, http://www.cincon.com/upload/media/data%20sheets/Data%20Sheet%20(DC)/B%20CASE/SPEC-EC5BE-V24.pdf DCDC-Converter CINCON EC5BExx 18-36VDC to Dual output DCDC-Converter, CINCON, EC5BExx, 18-36VDC to dual output, SIP package style, https://power.murata.com/data/power/ncl/kdc_mej1.pdf muRata MEJ1SxxxxSC, 19.5x9.8x12.5mm, 5.2kVDC Isolated, 1W, single output, http://www.cincon.com/upload/media/data%20sheets/Data%20Sheet%20(DC)/C%20CASE/SPEC-EC6C-V12.pdf DCDC-Converter CINCON EC6Cxx dual or tripple output DCDC-Converter, TRACO, TMR xxxx, Single/Dual output, http://www.datasheetlib.com/datasheet/135136/tmr-2-2410e_traco-power.html?page=3#datasheet DCDC-Converter TRACO TEN10-xxxx single output POE DCDC-Converter TRACO TMR1-xxxx Single_output DCDC SMD XP POWER ISU02 XP_POWER ITQxxxxS-H, SIP, (https://www.xppower.com/pdfs/SF_ITQ.pdf), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, old mpn/engineering number: 5569-14A2, example for new part number: 26-60-4170, 17 Pins (https://www.molex.com/pdm_docs/sd/026604020_sd.pdf), generated with kicad-footprint-generator Molex Nano-Fit Power Connectors, 43915-xx10, 5 Pins (https://www.molex.com/pdm_docs/sd/026604020_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.25mm, height 3.5, Wuerth electronics 9774100960 (https://katalog.we-online.de/em/datasheet/9774100960.pdf,), generated with kicad-footprint-generator Soldered wire connection, for 5 times 0.25 mm² wires, basic insulation, conductor diameter 2.4mm, outer diameter 3.5mm, size source Multi-Contact FLEXI-E 0.1 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 54722-0204, 20 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13-4P-1.25DS%2820%29/), generated with kicad-footprint-generator Soldered wire connection, for 5 times 0.25 mm² wires, basic insulation, conductor diameter 0.9mm, outer.

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