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Just visit his web site, it has a lot of useful info on many projects, as well as a lot of other info on HID ballasts. I don't know why the OP didn't just post the link to the web site in the first place! [grrrr]
I D/L'd the PDF and it opened with no problem, but I have Korean Fonts installed.
Just go to https://www.pwm.pe.kr and look around.