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todo.md

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TODOs for Nixie Clock project

Because no decent project is ever finished.

PCB

Global

  • Input protection
    • Over/under-voltage
    • Reverse polarity

Over-current protection circuit

  • Check out this circuit
  • Simulate in LTSpice
  • Breadboard OpAmp circuits:
    • Differential amp
    • Comparator
  • Pick an OpAmp
  • Schematic in KiCad
  • PCB in KiCad
  • Prototype made

HV PCBv2

  • Test points
  • Bigger board
    • Better spacing
    • Better ground plane
  • Maybe add 2.54 mm compatible breakout pins for the MC34063 chip
  • Pick more sane resistor values
  • Fix MOSFET footprint
  • Move connector header closer to board edge
  • Add resistor pad for pin 8. This can limit the current for the internal switch transistors - could speed up the design. Read page 14 of the application manual.
  • Prototype made and tested. Works!

Code

  • Complete ClaculateResistors.py in LTSpice folder.