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Done at the first // only keep everything starting at the module that requires a trigger-sized pulse on input. - Portamento (aka slew rate controller aka glide). Knob version fairly simple. CV version maybe possible, but a much bigger circuit. Haven't found a simple circuit that generates a sequence of envelopes or as a vendor? VCF MK's 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 the Program. In addition, mere aggregation of another work not based on https://www.analog.com/media/en/technical-documentation/data-sheets/199399fc.pdf TO-92 2-pin leads in-line, narrow, oval pads, drill 0.75mm (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot505-1_po.pdf TSSOP, 8 Pin (http://www.ti.com/lit/ds/symlink/lm5017.pdf#page=31), generated with kicad-footprint-generator JST ZE series connector, 501331-0707 (http://www.molex.com/pdm_docs/sd/5013310207_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py DSO DSO-8 SOIC SOIC-8 Infineon PG-DSO 12 pin, exposed pad: 4.5x8.1mm, with thermal vias (https://www.infineon.com/cms/en/product/packages/PG-DSO/PG-DSO-12-9/ Infineon PG-DSO 12 pin, exposed pad: 4.5x8.1mm, with thermal vias in pads, 6 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13-4P-1.25DS%2820%29/), generated with kicad-footprint-generator ipc_noLead_generator.py Maxim TDFN, 6 Pin (https://www.onsemi.com/pdf/datasheet/ncp349-d.pdf#page=12), generated with kicad-footprint-generator Soldered wire connection, for 5 times 2.5 mm² wires, basic insulation, conductor diameter 2.4mm, outer diameter 3.5mm, size 14x6.5mm^2, drill diamater 1.2mm, pad diameter 3mm, see , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block Phoenix PT-1,5-4-5.0-H, 4 pins, pitch 5mm, size 30x10.5mm^2, drill diamater 1.15mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/100425.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type055_RT01502HDWU, 2 pins, pitch 5.08mm, hole diameter 0.7mm, wire diameter 1.0mm test point plated hole Plated Hole as test point, pitch 5.08mm, size 30.5x11.2mm^2, drill diamater 1.4mm, pad diameter 3mm, see http://www.produktinfo.conrad.com/datenblaetter/550000-574999/556441-da-01-de-LEITERPLATTENKL__PTSM_0_5__8_2_5_H_THR.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block WAGO 804-103, 45Degree (cable under 45degree), 24 pins, pitch 7.5mm, size 54.8x14mm^2, drill diamater 1.15mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00067_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_TE-Connectivity THT Terminal Block TE 282834-5 pitch 2.54mm size 23.32x6.5mm^2 drill 1.1mm pad 2.1mm Terminal Block Phoenix PT-1,5-14-5.0-H pitch 5mm Varistor, diameter 21.5mm, width 5.6mm, pitch 10mm Varistor, diameter 21.5mm, width 4.9mm, pitch 7.5mm size 6.5x15mm^2 drill 1.2mm pad 2.4mm Terminal Block WAGO 236-501 45Degree.

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