Hope someone can help as I'm confused....
I bought one of these: (hope links are ok)
And have one of these inside it:
The first bulb I tried didn't appear to work so I tried a replacement which worked for a split second then went off.
I thought something must be wrong but I have tried a standard household bulb (60 watt screw fit) in the lamp holder and that works fine and stays on.
Its plugged into a household wall socket - So what could be the problem?