Imported from GitHub: jduanen/EL_PSU · commit 814efe9 · license MIT

Description

High Voltage Power Supply Unit for EL Displays

README

EL_PSU

High Voltage Power Supply Unit for EL Displays

This is a modification of the most excellent work of Ben Krasnow at https://github.com/benkrasnow/EL_driver_multi

The primary motivation for these changes are to better support the needs of the EL displays found in https://github.com/jduanen/alienFontDisplay and https://github.com/jduanen/elClock. In particular, to extend the life of these displays, I want to create a triangle (as opposed to, step) waveform so that the dv/dt of the signal exciting the display segments remains (close to) constant.

WIP

Parts Kitting

• Digikey Cart: https://www.digikey.com/short/m9prqmhq
  • look at datasheets and make sure substitutions work
• substitutions
  • B0540W Schottky diode not in stock at Digikey, substituting B0540W RHG
  • Substitute AP2210K-3.3TRG1 for AP2204K-3.3
  • MMBD5004S-7DICT-ND is an obsolete item at Digikey, substitute MMBD3004SE RFG
  • use 4.7μF 0603 SMD Capacitors for C9 (as per LT3468 datasheet)

TODO

• Update CAD files with substituted parts