Confused about resistors

[MKnight]

Right im confused about W and Ohms i need a 4,7w 4.7ohms resistor but i cant find one i look on the store but they are all over rater like 5W

like the 4.7ohm 10w resistor do i use this or does it have to be 4.7W or does the W not matter as im just intrested in the Ohms value...?

This is doing my head in as nothing i find helps only adds to the confusion...!

can you clarify..?

i need a 1W, 1.2 resistor & 4.7 Watt or 4.7 ohm...

[Silver Serpent]

Wattage is a minimum. You can always use a higher wattage rating resistor, and it will not affect brightness. Don't go overboard, since the higher wattage resistors are physically larger and take up more precious space in your saber. If you need a 4.7w resistor, either a 5w or a 10w will work, though the 10w will take up more room.

[MKnight]

Thats what i thought as the higher watts just deal with more current but the same resistance right..?

[Silver Serpent]

Simple answer: Yes, higher wattage supports more current. Resistance is Ohms.

Longer answer: Wattage deals with more *power*. Power = Voltage * Current. An increase in current (with voltage remaining same) will require more wattage.

[Kevin Starwaster]

Wattage is a minimum. You can always use a higher wattage rating resistor, and it will not affect brightness. Don't go overboard, since the higher wattage resistors are physically larger and take up more precious space in your saber. If you need a 4.7w resistor, either a 5w or a 10w will work, though the 10w will take up more room.

Yeah, those are so big, instead of mounting the resistor on a PEX, you're sort of mounting the PEX on the resistor. Hmmm. Sounds like there's a Soviet Russia joke in there somewhere...

[MKnight]

Yeah, those are so big, instead of mounting the resistor on a PEX, you're sort of mounting the PEX on the resistor. Hmmm. Sounds like there's a Soviet Russia joke in there somewhere...

LOL... funny

[MKnight]

So why are all the resistors in 100k 150k etc when im looking for a 4.7ohm resistor?

and the multimeters im looking at is showing:

Resistance 200Ω - 2000MΩ ± (2.5 % +3)

[Silver Serpent]

http://www.thecustomsabershop.com/47...stor-P492.aspx

Different resistors for different purposes. Try the calculations for an accent LED with a Li-Ion pack, and you'll quickly see why you need higher ohm resistors.

[MKnight]

http://www.thecustomsabershop.com/47...stor-P492.aspx

Different resistors for different purposes. Try the calculations for an accent LED with a Li-Ion pack, and you'll quickly see why you need higher ohm resistors.

I get that i dont understand where 4.7 ohm corrolates to 00??K do you see what im asking..?

[Forgetful Jedi Knight]

I get that i dont understand where 4.7 ohm corrolates to 00??K do you see what im asking..?

Depending on your multimeter, there may either be a lower setting, or the reading may be displayed as .004 or something like that.