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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 EPCOS app note 93 (https://www.catagle.com/45-2/PDF_AN93.htm Bourns TBU-CA Fuse, 2 Pin (https://www.bourns.com/data/global/pdfs/TBU-CA.pdf), generated with kicad-footprint-generator Molex KK-254 Interconnect System, old/engineering part number: 22-27-2041, 4 Pins (https://www.molex.com/pdm_docs/sd/009652028_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-119-02-xxx-DV-BE-A, 19 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with StandardBox.py) (https://product.tdk.com/info/en/catalog/datasheets/inductor_automotive_power_slf10145-h_en.pdf Inductor, TDK, SLF6028, 6.0mmx6.0mm (Script generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for a single 1.5 mm² wires, basic insulation, conductor diameter 1.25mm, outer diameter 2.7mm, size source Multi-Contact FLEXI-xV 2.0 (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_noLead_generator.py QFN, 56 Pin (https://www.jedec.org/standards-documents/docs/mo-142-d variation DC), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-120-02-xx-DV-PE-LC, 20 Pins (http://www.molex.com/pdm_docs/sd/5024301410_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 20 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/40001800C.pdf), generated with kicad-footprint-generator Hirose series connector, 14110413010xxx (https://b2b.harting.com/files/download/PRD/PDF_TS/1411XX13010XXX_100228421DRW063C.pdf), generated with kicad-footprint-generator Capacitor SMD Kemet-Y (7343-40 Metric), IPC_7351 nominal, (Body size from: https://www.vishay.com/docs/30100/wsl.pdf), generated with kicad-footprint-generator Molex Pico-Lock series connector, LY20-26P-DT1, 13 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ103130.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py 10-Lead Plastic Micro Small Outline Narrow Body (QR)-.150" Body [QSOP] (http://www.allegromicro.com/~/media/Files/Datasheets/ACS726-Datasheet.ashx?la=en Allegro Microsystems SIP-4, 1.27mm Pitch (http://www.allegromicro.com/~/media/Files/Datasheets/A1369-Datasheet.ashx Allegro Microsystems SIP-4, 1.27mm Pitch (http://www.allegromicro.com/~/media/Files/Datasheets/A1363-Datasheet.ashx Diodes SIP-3 Ammo Pack, 2.65mm Pitch (https://www.diodes.com/assets/Package-Files/SIP-3-Ammo-Pack.pdf Diodes SIP-3 Bulk Pack Diodes SIP-3 Ammo Pack, 2.65mm Pitch (https://www.diodes.com/assets/Package-Files/SIP-3-Ammo-Pack.pdf Diodes SIP-3 Ammo Pack Miniature Wired Open-Loop Current Sensor LEM CKSR 6/15/25/50/75-NP Current Transducer, https://www.lem.com/sites/default/files/products_datasheets/cksr_75-np.pdf LEM HO 8/15/25-NSM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-nsm-0000_series.pdf LEM HO 8/15/25-NSM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-np_0100__1100_series.pdf LEM HTFS x00-P current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%205_15-np_e%20v10.pdf LEM HX05-P-SP2 hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM HX04-P hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-nsm-0000_series.pdf LEM HO 8/15/25-NSM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-np-0000_series.pdf LEM HO 8/15/25-NP Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-np_0100__1100_series.pdf LEM HTFS x00-P current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%202_6-p_e%20v5.pdf LEM HX10-NP hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/htfs_200_800-p.pdf LEM HX02-P hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%205_15-np_e%20v10.pdf LEM HX05-P-SP2 hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-nsm-0000_series.pdf LEM HO 40/60/120/150-NP Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-nsm-0000_series.pdf LEM HO 8/15/25-NP Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/la_25-p.pdf LEM current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM HX25-P-SP2 hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-np_0100__1100_series.pdf LEM HTFS x00-P current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%205_15-np_e%20v10.pdf LEM HX05-P-SP2 hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%202_6-p_e%20v5.pdf LEM HX05-NP hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-np_0100__1100_series.pdf LEM HTFS x00-P current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-nsm-0000_series.pdf LEM HO 8/15/25-NP Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/ho-np-0000_series.pdf LEM HO 8/15/25-NP Current Transducer (https://www.lem.com/sites/default/files/products_datasheets/la_25-p.pdf LEM current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM HX06-P hall effect current transducer (https://www.lem.com/sites/default/files/products_datasheets/hx%203_50-p_sp2_e%20v07.pdf LEM HX15-NP hall effect current transducer.

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