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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/8063fa.pdf Altera BGA-36 V36 VBGA BGA-48 - pitch 0.8 mm Highspeed card edge connector for 1.6mm PCB's with 60 contacts (polarized Highspeed card edge connector for panel, 90° PCB mount 4 pin, 1.0mm round THT pads Net tie, 2 pin, 0.3mm round THT pads Net tie, 3 pin, 0.5mm square SMD pads Net tie, 4 pin, 0.5mm square SMD rectangular pad as test Point, square 3.0mm side length test point plated hole Plated Hole as test Point, diameter 5.0mm z-position of LED center 3.0mm 3 pins Ceramic Resomator/Filter 7.0x2.5mm^2, length*width=7.0x2.5mm^2 package, package length=5.5mm, package width=3.0mm, 3 pins diameter 5.0mm z-position of LED center 6.0mm 2 pins diameter 3.0mm z-position of LED center 2.0mm, 2 pins, pitch 3.5mm, size 11.2x7mm^2, drill diamater 1.1mm, pad diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block WAGO 804-309, 45Degree (cable under 45degree), 11 pins, pitch 3.5mm, 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 outer diameter, generated with kicad-footprint-generator JST ZE series connector, S6B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator JST SUR series connector, 14111013002xxx (https://b2b.harting.com/files/download/PRD/PDF_TS/1411XX13002XXX_100228421DRW035C.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-112-02-xxx-DV, 12 Pins per row (http://www.molex.com/pdm_docs/sd/431602102_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py LQFP, 216 Pin (https://www.onsemi.com/pub/Collateral/561BE.PDF), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-112-02-xx-DV-PE-LC, 12 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 Soldered wire connection with double feed through strain relief, for 6 times 2.5 mm² wires, reinforced insulation, conductor diameter 1.4mm, outer diameter 2.3mm, size source Multi-Contact FLEXI-xV 2.5 (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 Mini-Fit Jr.

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