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TEXT_2300_13 Electric Explosions.txt
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onethree @ 13 @ tr33n
@Electric Explosions@
3teen @ Astrosmurf @ tHIRTEEN
1 - explosions
There are a few electronic components that make nice explosions under certain
conditions. The most common are:
Transistors
These are quite easy to kill, especially the puny ones. Just wire a high voltage
(30v or more) across any 2 legs and they pop quite nicely.
Diodes
These explode about like transistors, and are usually cheaper.
Resistors
If you double the voltage across a resistor the current will double, so the power
dissapated will increase fourfold. It works especially well with small resistors
which will give a higher current. They generally tend to heat up a lot and start
to smoke a lot, but sometimes they fizzle and even make popping noises.
741s
A 741 is a basic operational amplifier - quite common and cheap. They can handle
30v(+15v to pin 8 and -15v to pin 4), but if you wire these up the wrong way round
the poor little things can't cope. you'll either get some nice smoking and a cracked
chips, or they will go bang and fly off in a few hot shards.
555s
A 555 is a timer chip that can be used to make oscillators and other useful things.
They also make quite loud bangs. They run with up to an 8v power supply, but if you
increase this they pop. It's best if you reverse the polarity, giving louder bangs
than a 741.
Capacitors
By far the best for exploding. The type you need to use are electrolytic capacitors,
which are polarised. Obviously you have to wire them in the wrong way round, and
about 30v should do (this depends on the specs of the capacitor...some are built
to withstand a lot of damage) for a small capacitor. A few µFs is the kind of size
you're looking for. The capacitor has some wierd chemicals inside to help it work,
but when it's wired in the wrong way with too much voltage the capacitor heats up
very fast. So fast that the chemicals vaporise almost instantly and rip the whole
thing apart with the insides flying everywhere, leaving nasty (and probably toxic)
fumes in the air. Bigger capacitors give bigger explosions (just like more dynamite
gives bigger explosions) but are harder to kill. If it's a bit hard going, just wire
it across the mains and it'll make a nice loud bang, and probably trip some circuit
breakers somewhere.
note: if you plan on doing any of this, stand well back (this can be done easily
by leaving a gap in the circuit and 2 long wires running to where you are, so you
can touch them together and you'll be safely round a corner or in the toilet or
whatever). Another thing to watch out for is that some of these things take time,
especially capacitors. I've known them to look harmless for half a minute before
exploding in your face when you look to see what's wrong.