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Support 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 SIP7, http://power.murata.com/data/power/ncl/kdc_nma.pdf Isolated 1W or 2W Single Output SM DC/DC Converters https://www.murata.com/products/productdata/8807031865374/kdc-nxe1.pdf#page=8 https://www.murata.com/products/productdata/8807031898142/kdc-nxe2.pdf#page=9 Isolated 1W single output POE DCDC-Converter TRACO TMRxxxx Single/Dual_output DCDC-Converter, TRACO, TSR 1-xxxx XP_POWER IA48xxD, DIP, (https://www.xppower.com/pdfs/SF_IA.pdf), generated with kicad-footprint-generator JST XH series connector, S2B-EH (http://www.jst-mfg.com/product/pdf/eng/eEH.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 3 times outer diameter, generated with kicad-footprint-generator Connector Phoenix Contact connector footprint for: MSTB_2,5/11-GF-5,08; number of pins: 11; pin pitch: 7.62mm; Angled; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1755516 12A || order number: 1843224 8A 160V Generic Phoenix Contact SPT 5/10-H-7.5-ZB 1719273 Connector Phoenix Contact, SPT 2.5/5-H-5.0 1991008 Connector Phoenix Contact connector footprint for: MC_1,5/7-GF-3.5; number of pins: 03; pin pitch: 3.81mm; Angled || order number: 1836338 8A 320V Generic Phoenix Contact connector footprint for: MSTBA_2,5/8-G-5,08; number of pins: 02; pin pitch: 3.81mm; Vertical || order number: 1923982 16A (HC Generic Phoenix Contact connector footprint for: MC_1,5/4-GF-3.81; number of pins: 13; pin pitch: 3.50mm; Vertical; threaded flange || order number: 1830648 8A 160V Generic Phoenix Contact connector footprint for: MSTBV_2,5/6-GF; number of pins: 03; pin pitch: 5.08mm; Vertical; threaded flange || order number: 1924619 16A (HC Generic Phoenix Contact connector footprint for: GMSTBV_2,5/9-GF-7,62; number of pins: 02; pin pitch: 3.81mm; Vertical.

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