On 5/22/06, Alessandro Queri <piclist@tiscali.it> wrote:
> It's 12V 35W.

Theoreticaly such load can't create problems if:

1. there is no short circuit on the secondary (to the lamp)
2. the transformer is well dimensioned (it must have at least 40-50W,
so you can't use a small wallwart)
3. the primary coil has enough wires, so with the secondary circuit
open, must be less than 20-40mA in the primary.

or

4. the transformer is a switching one and well designed (it's sourcing
a small current when is on stdby)

If the bulb it's a halogen lamp and there is no ceramic socket and the
wires are not insulated with silicone, than almost sure you have a
"variable" short circuit near the socket. For a standard transformer
the effect is damaging the primar coil by hot (assuming the secondary
is well dimensioned and insulated).

Vasile

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