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It is battery power, I am interested. It use 2 x AAA cell that total
voltage is 2.6-3V.Can light a piece of paper. It is cheap and no OFF
in strong wind condition. I
saw it too long ago when I was young. Its construction is simple, that is 2 cell sockets, 1 heat wire, 1 bulb and 1 switch. The switch is SPDT mode and connect to wire and bulb in the bottom representational. The load of wire is 2.2 ohm. When turning on, the wire will be heat to red color and the current is at least 1A (2.6v / 2.2 ohm =1.1A). If the capacity of battery is 750mAH, the using time is near 0.7 hours (0.75Ah / 1.1A=0.68). Taking your own risk. |
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the wire 
the wire too.
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