Here are a couple of short but informative articles about HMI's and ballasts -
https://en.wikipedia.org/wiki/Hydrargyrum_medium-arc_iodide_lamp
http://www.lightlineelectronics.com/faq_hmi.html...
Type: Posts; User: Les Hillis
Here are a couple of short but informative articles about HMI's and ballasts -
https://en.wikipedia.org/wiki/Hydrargyrum_medium-arc_iodide_lamp
http://www.lightlineelectronics.com/faq_hmi.html...
Nice review Tommy, thanks.