ExtraTech HP80 Stepper Motor Driver Card

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Overview

Proprietary stepper drive built with discrete components, attached as daughter cards to an ExtraTech HP4 controller motherboard.

Bill of Materials

Name Marking Part
H1 2x20 2mm female header 4.4mm tall Molex 0791077019
Sullins NPPN202AFCN-RC (similar)
U6 (Linear Technology logo) LTDS e3 Linear Technology LT1720CMS8#PBF
? (2 pcs) (Analog Devices logo) D 38 Analog Devices AD5310BRMZ-REEL7
? (Fairchild logo) PH5AB 74ACTQ245 Fairchild 74ACTQ245SJX
? (4 pcs) IR2110S 801P (International Rectifier logo) Infineon IR2110SPBF
? (8 pcs) WE 217 PAT NO.361317 Wakefield-Vette 217-36CTE6
? (14 pcs) 106 35K 745 KYOCERA TAJD106K035RNJV
R1,R2,R17,R18 R020 Susumu RL7520WT-R020-F
R14,R26 470 (0603 package) YAGEO RC0603FR-0747RL
? (4 pcs) (C unk logo US1G Vishay US1G-E3/5AT
? AMP TE 1217056-1

TODO: C23 and C24, and various resistors/capacitors