Re: "electronically" puncture CO2 cartridge... how?

>
> On a military sonarbuoy project I worked on we did this by having a
> spring loaded spike that was held in place by a string which was rapped
> around a resistor body. Pass current through the resistor and it heats
> up burns the string and releases the spring loaded spike which
> punchures the can.
>
> This mechanism was manufactured in the tens of thousands and proved
> 100% reliable. It even survived the harsh conditions of being slammed
> into the ocesn from a helicopter or plane.
>
> Dave :)
>

Neat! What was it used for - recovery of the units from the ocean floor?

rob


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