Industrial lighting?

[KevinK]

now we are talking about ballast,

I posted it once, but no responds.

I have 2 coralive ballast (150 W) --- the once that come with the coralive mh fictures,

as I have bin given these without the light unit itselve, I gust had in mind to put them on a pendant ore so.

proublem is, thy bothe cant fire up a phounix bulb, while thy are for regular DE HQI lights.

is there a way to mesure a ballast to check if thy are ok?

could it be that the coralive units have some sort of capasitor build in the unit to fire up a bulb (ax I might be missing this than.

it is gust fustrating to have the ballast sitting in a box, where I could use them.

any input?