12VHello,
What voltage did you use on your dimmer?
As I look at it, it should be max 15 Volts DC.
Bertus
12VHello,
What voltage did you use on your dimmer?
As I look at it, it should be max 15 Volts DC.
Bertus
I wonder if the copper wire will be intact at 500 deg F
I admit wayneh argument is sound and yet funny.
copper wire can easily handle 500F. I doubt anything noticeable will happen at 500F to the copper wire.I wonder if the copper wire will be intact at 500 deg F
I admit wayneh argument is sound and yet funny.
That makes sense, thank you.Your whole experiment is essentially measuring how well a 45 gauge wire can act as a heat sink. The amount of heat it will take to get a 3 foot long, 45 gauge wire to 500F is negligiable. The total mass of the wire is about 12 milligrams with about 1.3 cm2 of surface area. It will take a few joules of energy to get to that temp (in excess of the rather large energy to overcome heat transfer to still air.
My calculations show your 3 foot wire to have a 10 ohm resistance and assuming the wire heats 50-degrees C per watt of input energy, you need to increase the temp by 237 degrees C, you will need only 5 watts. 5 W = V*V/R = V*V/10. V = sqRT of 50 = 7 volts. Any air movement will greatly impact this calculation and you may need up to 15 volts in what seems to be still air. Maintaining 500F will be a problem with only 12 milligrams of mass. You will likely be under or red-hot as air flows in the room change.
thanks.Hello,
I looked at the datasheet of the used mosfet and have seen that is capable of a dissipation of only 2.5 Watts mounted on a PCB.
Bertus
Funny? Like this? (skip ahead to 0:55 - 2:20)I admit wayneh argument is sound and yet funny.