A 10 ohm quarter watt resistor with 12V applied across it. It passes 1.2A which means it dissipates 14.4W which is over 57 times its rated power. As such it smokes then bursts into flames. (Yay!)
(Note the use of a traditional quarter watt, 10 ohm carbon film resistor. These burn better than metal film ones.)
(Note the use of a traditional quarter watt, 10 ohm carbon film resistor. These burn better than metal film ones.)
Wer kommt hier auch noch von AM?
niiiiice
how much time it take to ignite
That takes me back – one of the first things I did after building my first power supply lol
what about with 240v? 😛
Yes. 8 Alkaline AA cells or 10 rechargeable AA cells should provide 12V with enough current to ignite the resistors.
Do you think 8 AA-batteries in series will ignite one a 10ohm 0.25w resistor? I'm designing a swall portable ignition system that will be running on this.
Dude, you have 220V at your disposal at the dryer socket. 🙂
Here in the UK our mains voltage is 230V as standard so things tend to make bigger bangs when they fail.
When mains voltage is used (not recommended) the resistor will usually fail with a bang as demonstrated in some of my other videos. Lots of fun in itself, but not ideal for firework ignition.
I tried a similar experiment and got a considerably more violent result!
@frosty956 I've tried a few different brands of quarter watt carbon film resistors and they all work. They do go open circuit, but get white hot and emit flames in the process. You can't just keep re-using them, you need a new one each time.
can you re-use it??