West Coast Medicine
Well-Known Member
I have a 2 year old magnetic 1000w ballast running a HPS and it used to be hot hot all the time, but now it's cold to the touch! It still works, but is it going out or what? Why is it cold?
It is called a condenser - or more correctly a capacitor.if it is the condensator which is broken the ballast can be detected by the power company. It fucks up the grid appearantly...
I've never seen a resistor of any type in a magnetic ballast. However, there is an electrolytic capacitor and they're usually contained in a metal can, usually oval. There is a negative and positive terminal on the CAP. The negative side connects to the ballast(transformer) and the positive side goes to the center connection of your lightbulb. Some ballasts employ an ignitor system(that is also wired into the lamp line) so that hps bulbs without built in ignitors can be used. The heat is generated by the wire windings of the transformer. The CAP will only allow certain frequencies of electricity to flow through it and dampen out others. I would be more concerned if my ballast was operating on the hot side. It sounds like your light's working ok. Maybe, (not saying there is a problem) it's time for a new lightbulb. Lightbulbs are only good for the amount of operating hours that they are rated for then their light starts to get less intense until it fails.the heatsink draws the heat away from the resistors which is why it gets hot. if the resistors are not getting hot than neither will the heatsink.