[aprssig] Amazing resistors
curt.we7u at gmail.com
Mon Sep 8 11:59:36 EDT 2014
On Sat, 6 Sep 2014, Al Wolfe wrote:
> In my mis-spent youth I was involved with many projects that required a
> squib, that is, an electrical igniter After a lot of trial and error we
> settled on some very thin steel wire. Basically, we found some picture
> hanging wire and discovered it was seven-stranded. Unwinding one of the
> strands gave us a single thin steel wire that was perfect for our projects.
> It would instantly explode with 120 volts applied and glow brightly at 12
> volts before oxidizing and disintegrating.
Hah! In junior high or early high school I figured out that a 30-gauge wire-wrap wire made a better igniter for my Century rocket engines than the expensive igniter wires they sold... Saved money -and- made every launch successful. I also wired my launcher to the family's car battery instead (launched from the driveway), which also increases reliability.
I claim to know nothing about blowing up resistors on purpose... Really.
Curt, WE7U. http://wetnet.net/~we7u
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