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OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on the Env output, its negative will appear on the same place counts as distribution of the rail + a safety margin // margins from edges h_margin = thickness*2; v_margin = hole_dist_top*5; output_column = width_mm - thickness; // column from edge plus hole radius // elevated sockets to fit in glide controls 53c46eece113c24bce671b9108c3f713b2229189 Final-ish tweaks Final-ish tweaks Final-ish tweaks More mounting hole 3.2mm m3 iso7380 Mounting Hole 2.2mm, no annular, M2 mounting hole 3.2mm m3 iso7380 Mounting Hole 3mm, no annular Mounting Hole 2.1mm, no annular mounting hole 3.2mm m3 iso7380 Mounting Hole 2.7mm, M2.5, DIN965 mounting hole 3.2mm m3 iso14580 Mounting Hole 2.7mm, M2.5 mounting hole 6mm no annular Mounting Hole 3.2mm, no annular, M3, ISO14580 mounting hole 3.2mm m3 iso14580 Mounting Hole 2.7mm, M2.5, ISO14580 mounting hole 6.4mm no annular m2 iso7380 Mounting Hole 2.2mm, no annular, M5, DIN965 mounting hole 4.3mm no annular m3 Mounting Hole 2.2mm, no annular, M6, ISO7380 mounting hole 2.5mm no annular m2 iso14580 Mounting Hole 3.2mm, no annular, M6 mounting hole 4.3mm m4 iso7380 Mounting Hole 4.3x6.2mm, M4 mounting hole 2.2mm no annular Mounting Hole 2.2mm, no annular, M6, DIN965 mounting hole 4.3mm m4 iso7380 Mounting Hole 6.4mm, M6, DIN965 mounting hole 5.3mm m5 iso14580 Mounting Hole 4.3mm, M4 mounting screws (https://www.vishay.com/docs/95423/sot227g2.pdf, https://www.vishay.com/docs/95793/vs-fc420sa10.pdf TR TO-3 TO3 TO-204 TO-3P-3, Horizontal, RM 1.7mm, PentawattF-, MultiwattF-5 TO-220F-5 Vertical RM 1.7mm Pentawatt Multiwatt-5 TO-220-7, Vertical, RM 2.286mm SIPAK, Vertical, RM 4.58mm, IPAK, see https://www.diodes.com/assets/Package-Files/TO251.pdf TO-251-3 Vertical RM 2.54mm TO-220-4 Vertical RM 1.27mm MultiwattF-15 staggered type-2 TO-220-4 Vertical RM 1.7mm PentawattF- MultiwattF-5 staggered type-1 TO-220F-9 Vertical RM 1.7mm MultiwattF-11 staggered type-1 TO-220F-15, Vertical, RM 2.54mm, staggered type-1 TO-220F-5, Vertical, RM 1.7mm, staggered type-2, see http://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-to-220/to-220_5_05-08-1421.pdf?domain=www.linear.com, https://www.diodes.com/assets/Package-Files/TO220-5.pdf TO-220-5 Vertical RM 5.45mm TO-3PB-3, Horizontal, RM 1.7mm, Pentawatt, Multiwatt-5, staggered type-1, see http://www.ti.com/lit/ds/symlink/lm3886.pdf TO-220F-11 Vertical RM 2.29mm IPAK TO-262-3, Horizontal, RM 2.286mm SIPAK, Vertical, RM 2.54mm, see https://www.vishay.com/docs/66542/to-220-1.pdf TO-220-3 Horizontal RM 5.45mm TO-264-3, Vertical, RM 2.54mm, see https://www.vishay.com/docs/66542/to-220-1.pdf TO-220-3 Vertical RM 5.45mm TO-3P-3, Vertical, RM 2.54mm, staggered type-1 TO-220-4, Vertical, RM 10.9mm, see https://diotec.com/tl_files/diotec/files/pdf/datasheets/kbpc600.pdf Single phase bridge rectifier case 16.7x16.7 Vishay GBU rectifier package, 5.08mm pitch, see https://diotec.com/tl_files/diotec/files/pdf/datasheets/b40c3700.pdf Diotec rectifier diode bridge 9.8mm WOG pitch 5.08mm size 71.1x9.8mm^2 drill 1.3mm pad 2.5mm terminal block Metz Connect 360271, block size 6x4mm^2, drill diamater 1.15mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00276_DB_EN.pdf, script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_4Ucon THT Terminal Block.

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