Osram HQI-T D

I’ve had this lamp for a long time, I actually bought it when I was still living at home! And as a result it has many hundreds of hours on it, all done on mag gear. As a result the tube had completely clouded over, so much so as you couldn’t see the electrodes! Yet here it is now after about 25 odd hours running on one of Pat’s Dyno’s! Unbelievably the effect of now being run on electronic gear seems to be cleaning the tube up!, you can now see the electrodes again if you zoom in! I don’t know if the arc now seems to be running ‘more pure’ on the Dyno, but it’s definitely cleaning the tube in some way? Currently on the energy meter, it’s now running at, 267 Watts, 239 Volts, 1.10 Amps @ 1.00 PF