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Dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on http://www.latticesemi.com/view_document?document_id=213 Lattice caBGA-756, ECP5 FPGAs, 27.0x27.0mm, 756 Ball, 32x32 Layout, 0.8mm Pitch, http://www.latticesemi.com/view_document?document_id=213 Analog Devices KS-4 (like EIAJ SC-82 Infineon PG-HDSOP-10-1 (DDPAK), 20.96x6.5x2.3mm, slug up (https://www.infineon.com/cms/en/product/packages/PG-HDSOP/PG-HDSOP-10-1/ HSOF-8-1 [TOLL] power MOSFET (http://www.infineon.com/cms/en/product/packages/PG-HSOF/PG-HSOF-8-3/ Infineon PG-TO-220-7, Tab as Pin 8, see e.g. Https://www.infineon.com/dgdl/Infineon-BTS50055-1TMC-DS-v01_00-EN.pdf?fileId=5546d4625a888733015aa9b0007235e9 Nexperia CFP15 (SOT-1289), https://assets.nexperia.com/documents/outline-drawing/SOT1289.pdf On Semiconductor ECH8, https://www.onsemi.com/pub/Collateral/318BF.PDF Low Profile Inductor, Vishay, Vishay_IHSM-3825, http://www.vishay.com/docs/34018/ihsm3825.pdf, 11.2mmx6.3mm inductor vishay icsm smd Inductor, Wuerth Elektronik, Wuerth_HCI-1050, 10.2mmx10.2mm Inductor, Wuerth Elektronik, WE-PD, SMD, Typ M, Typ S, Handsoldering, https://katalog.we-online.com/pbs/datasheet/744778005.pdf Power Inductor, Ms50T, SMD, Fixed inductor, high temperature, https://neosid.de/import-data/product-pdf/neoFestind_Ms50T.pdf Neosid Power Inductor WE-PDF Wuerth Shielded Power Inductors 23.5x22mm, https://productfinder.pulseelectronics.com/api/open/product-attachments/datasheet/pa4349.104anlt Shielded Molded High Current Inductor, body 17x22mm, https://www.we-online.com/catalog/en/WE-HCFT#/articles/WE-HCFT-2012-ROUND Shielded High Current Inductor, body 22x25.7mm, https://www.we-online.com/catalog/en/WE-HCFT#/articles/WE-HCFT_SIZE_2504 Shielded High Current Inductor, body 2.5x2mm, https://www.we-online.com/catalog/en/WE-LQSH#/articles/WE-LQSH-2512 Semi-Shielded High Saturation Power Inductor, Wuerth Elektronik, Wuerth_HCM-1078, 9.4mmx6.2mm Inductor, Wuerth Elektronik, Wuerth_MAPI-3020, 3.0mmx3.0mm Inductor, Wuerth Elektronik, WE-PD, SMD, Typ LS, Handsoldering, https://katalog.we-online.com/pbs/datasheet/7447715906.pdf Shielded Power Inductor Ms50T SMD Fixed inductor SMD Neosid,Inductor,Ms95, Ms95a, Ms95T, Fixed inductor, SMD, magneticaly shielded, https://neosid.de/import-data/product-pdf/neoFestind_ma_SMs50.pdf Neosid Inductor SM-PIC1004H Fixed inductor anti clockwise Neosid, Inductor, SM-NE150, Fixed inductor, high temperature, https://neosid.de/import-data/product-pdf/neoFestind_Ms50T.pdf Neosid Power Inductor WE-PDF Wuerth Handsoldering L_Wuerth_WE-TPC-3816 StepUp generated footprint, https://www.infineon.com/cms/en/product/packages/PG-LLGA/PG-LLGA-5-1/ AKM Current Sensor, 7 pin, SMD (http://www.akm.com/akm/en/file/datasheet/CQ-236B.pdf akm current sensor smd AKM VSOP-24 current sensor, 5.6x7.9mm body, 0.65mm pitch (http://www.akm.com/akm/en/file/datasheet/CQ-330J.pdf AKM CZ-381x current sensor, 5.6x7.9mm body, 0.65mm pitch (http://ww1.microchip.com/downloads/en/DeviceDoc/14L_VDFN_4_5x3_0mm_JHA_C041198A.pdf DE Package; 14-Lead Plastic DFN (5mm x 5mm) (see http://www.everspin.com/file/236/download DFN8 2x2, 0.5P; No exposed pad Micrel MLF, 8 Pin (http://www.ti.com/lit/ml/mpds400/mpds400.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py TQFN, 16 Pin (https://www.analog.com/media/en/technical-documentation/data-sheets/436412f.pdf#page=22), generated with.

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