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KolnFC
3 years ago

How much power is required is determined by the consumer, the voltage source delivers a constant voltage, no constant power (so you cannot operate the lamp with 6W, except you increase the voltage to 18V and then the lamp would probably burn through).

Your old lamp approves 500mA power, your new 333mA and is therefore probably less bright.

RareDevil
3 years ago
Reply to  KolnFC

Well, at 18V the 4W lamp would have 9W power consumption, not 6W… (under the assumption of an ohmic consumer…)

KolnFC
3 years ago
Reply to  RareDevil

That’s right, the power would be half an ampere, for 6W you really need to do so Pi times thumb anything slightly under 15V.

Ohmsh’s law was a bit out, but the point remains.

natow
3 years ago

nothing can break, the glow thread has a slightly higher resistance, it flows less current and the lamp really lights a little less bright.

checkpointarea
3 years ago

4w lamp with 6w power?

The bulb will flash less hot and less bright. Interesting for me personally, which motorcycle has such a weak flasher incandescent lamp, normally this is more than 10 watts, up to 21 watts.

HarryXXX
3 years ago

The flashers then light less bright.

Userhm
3 years ago

…she would shine darker with 4 W than the stronger..

Hikker
3 years ago

The pear shines too weak. As an emergency solution, I think this is justifiable at short notice until you have got a new 6 W pear.