Electrically Controlled Fire Letter04:33

This is a Electrically Controlled Fire Letter made of matches and Nichrome wire.
In this experiment, some matches are not ignited. Because the power is not enough or Nichrome wire is too thin. The earlier ignited match is breaks Nichrome wire.

So if you want do this experiment, use 0.15mm Nichrome wire.
Appropriate resistor value is 200~220 ohm at AC 220V. (If you live in 120V area, make several 110~120 ohm circuit and connect in parallel)