I am making some heated clothing and am not experienced with circuits (although I tried using google and found the info confusing concerning powering heating elements).
So far I have sewn 20 ft of 30 gauge wire into some clothing. The wire is not nichrome and is 0.1 ohms per foot so 2 ohms total resistance. If I want something around 40 watts (very rough estimate) of heating, can I just use P = V^2/R?
Doing so gives me V = 9 volts. But I'm guessing it isn't as easy as connecting a little 9 volt battery to the wire (or is it?). I've seen some things about internal resistance etc of power sources and this wire isn't high resistance.
What would be the best way to power something like this?
thanks for any help!!
So far I have sewn 20 ft of 30 gauge wire into some clothing. The wire is not nichrome and is 0.1 ohms per foot so 2 ohms total resistance. If I want something around 40 watts (very rough estimate) of heating, can I just use P = V^2/R?
Doing so gives me V = 9 volts. But I'm guessing it isn't as easy as connecting a little 9 volt battery to the wire (or is it?). I've seen some things about internal resistance etc of power sources and this wire isn't high resistance.
What would be the best way to power something like this?
thanks for any help!!