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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 EPCOS app note 93 (https://www.catagle.com/45-2/PDF_AN93.htm Bourns TBU-CA Fuse, 2 Pin fuse holder, car blade fuse direct solder car blade fuse direct solder car blade fuse mini, direct solder car blade fuse mini, http://www.keyelco.com/product-pdf.cfm?p=306 Fuseholder, 5x20, closed, horizontal, Bulgin, FX0457, Sicherungshalter, Fuseholder 5x20 closed vertical Bulgin FX0456 Sicherungshalter Fuseholder, 5x20, closed, horizontal, Bulgin, FX0457, Sicherungshalter, Fuseholder 5x20 closed horizontal Shock-Safe Fuseholder, 5 x 20 mm fuse holders; Vertical w/ Stability Pins; 250V; 6.3-16A (http://www.cooperindustries.com/content/dam/public/bussmann/Electronics/Resources/product-datasheets/Bus_Elx_DS_2118_HB_PCB_Series.pdf 5 mm x 20 mm row spacing, 22x23x17.53mm (https://katalog.we-online.com/ctm/datasheet/750343373.pdf 28-lead TH, Package W, https://www.littelfuse.com/~/media/electronics/datasheets/power_semiconductors/littelfuse_power_semiconductor_igbt_module_mg1275w_xn2mm_datasheet.pdf.pdf 35-lead TH, ACEPACK 2 CIB, same as ST_ACEPACK-2-CIB, https://www.infineon.com/dgdl/Infineon-FP50R06W2E3-DS-v02_02-EN.pdf?fileId=db3a30431b3e89eb011b455c99987d24 24-lead TH, Package W, https://www.littelfuse.com/~/media/electronics/datasheets/power_semiconductors/littelfuse_power_semiconductor_igbt_module_mg1250w_xbn2mm_datasheet.pdf.pdf 35-lead TH, Package W, https://www.littelfuse.com/~/media/electronics/datasheets/power_semiconductors/littelfuse_power_semiconductor_igbt_module_mg1250w_xbn2mm_datasheet.pdf.pdf 35-lead TH, ACEPACK 2 CIB, PressFIT, https://www.st.com/resource/en/datasheet/a2c50s65m2-f.pdf 25-lead TH, SDIP-25L, https://www.st.com/resource/en/datasheet/stgips20k60.pdf Valve ECC-83-1 round pins Valve ECC-83-2 flat pins Mini-Pentode, 5-pin, e.g. JAN6418 Valve Mini-Pentode 5-pin JAN6418 Varistor, diameter 7mm, width 3.6mm, pitch 5mm size 82.3x14mm^2 drill 1.15mm pad 3mm Terminal Block WAGO 236-408, 45Degree (cable under 45degree), 9 pins, pitch 5.08mm, revamped version of bornier2 simple 3-pin terminal block, pitch 5.08mm, size 35.6x10.6mm^2, drill diamater 1.3mm, pad diameter 3mm, see http://www.metz-connect.com/de/system/files/METZ_CONNECT_U_Contact_Katalog_Anschlusssysteme_fuer_Leiterplatten_DE_31_07_2017_OFF_024803.pdf?language=en page 133, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00087, 11 pins, pitch 2.54mm, size 25.86x6.5mm^2, drill diamater 1.2mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00078_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00029 pitch 10mm size 95x10.3mm^2 drill 1.3mm pad 2.6mm terminal block Metz Connect Type011_RT05503HBWC pitch 5mm size 242x14mm^2 drill 1.15mm pad 3mm single screw terminal block Metz Connect Type067_RT01904HDWC, 4 pins, pitch 5.08mm, size 25.4x11.2mm^2, drill diamater 1.3mm, pad diameter 3mm, see http://www.metz-connect.com/de/system/files/METZ_CONNECT_U_Contact_Katalog_Anschlusssysteme_fuer_Leiterplatten_DE_31_07_2017_OFF_024803.pdf?language=en page 133, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type059_RT06304HBWC, 4 pins, pitch 10.2mm, size 96.5x8.3mm^2, drill diamater 1.3mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00023_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00069, 4 pins, pitch 5mm, size 45x9mm^2, drill diamater 1.15mm, pad diameter 3mm, see , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block WAGO 236-506 45Degree pitch 5mm size 15x12.5mm^2 drill 1.4mm pad 2.7mm terminal block RND 205-00069, 4 pins, pitch 5mm, size 242x14mm^2, drill diamater 1.2mm, pad diameter 2.1mm, size source Multi-Contact FLEXI-E 2.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated.

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