I am making a halogen desk lamp that uses DC power supply. My plan is to find a notebook power adapter to drive 12V bi-pin bulb. For a desk lamp, 36W is enough power. That is 3A current. A 12V notebook AC power adapter can supply up to 5A current. So there is no problem.
My worry is lamp's startup current. For a incandescent bulb, its startup current is usually 10 times larger. But I do not want a 12V 30A adapter. It is big, heavy and hard to find.
So my question is:
(1) Is a 12V5A notebook power adapter capable of starting a 12V3A halogen bulb?
(2) If yes, does it hurt the adapter?
(3) If still yes, should I add some protection? (a inductance? How many H should it be?)
My worry is lamp's startup current. For a incandescent bulb, its startup current is usually 10 times larger. But I do not want a 12V 30A adapter. It is big, heavy and hard to find.
So my question is:
(1) Is a 12V5A notebook power adapter capable of starting a 12V3A halogen bulb?
(2) If yes, does it hurt the adapter?
(3) If still yes, should I add some protection? (a inductance? How many H should it be?)