ignition system

[-Robbie-]

hi, im new to the forums and to general electronics because im cursed with them anyway i need your guys help to make an ignition system for my homemade fireworks, fuse isnt reliable. my idea consists of using 2 9 volt batteries connecting them to a toggle switch led and buzzer and sum sort of key ignition and a ppush to make switch which sends the current/ volts or watever down a 100metre length of cable. the problem is that i cant get the power of the batteries to travel down the cable to the nichrome heating element that will ignite the fireworks. anyhelp is welcome

thanks in advance

 

[Reloadron]

First of all, everyday 9 volt batteries don't deliver much current. Toss in 100 meters of wire with a high resistance and you have more problems. You need to explain in detail what the nichrome igniter is and what it takes to get a good hot glow? You need to provide the gauge of the wire? Doing this isn't difficult but helping you without any information is pretty hard.

Ron

 

[-Robbie-]

ah ok well it doesnt have to be a 9 volt just small and not heavy to carry, heres the details for the nicrome..
.32SWG Nichrome Resistance wire
Max operating temp: 1100 Degrees C
Gauge: 32SWG
Diameter (mm): 0.274
Resistance per Metre (Ohms): 18.99
Weight per Metre (Grammes): 0.4865
copied and pasted of who i bought it of
any more info you need just ask

 

[ronv]

Try 4 D batteries on 2 inches of nichrome and see how it glows. I used to use this on model rockets.

 

[-Robbie-]

ok thanks, anymore idears?

 

[RCinFLA]

We used to strip stranded line cord, taking one strand and space turn wrapped about 4 turns around M80 fuse cord. Connected to regular line core to 12 v lead acid battery set them off.