Would that called a "crowbar circuit" or a "sledgehammer circuit"?
It's amazing it worked at all for more than a few seconds, much less 20 years!!! Perhaps the reed switch was spared arcing damage because the low impedance secondary of the transformer dampened the induction collapse spikes. But I think you got it right about the ruggedness of parts in "the old days". Nowadays everything has max ratings teetering on the edge of failure. Greed Rules. Norm S/V Bandersnatch > I hooked up the output of a 6-volt > transformer to a 6-volt mechanical buzzer, then put a normally-open reed > switch *in parallel* with the buzzer - which meant that when the door > was closed and the magnet was next to the switch, it pulled in and put a > dead short across the transformer output, thus silencing the buzzer. I > mounted the whole thing in a red-and-white "project box" that Radio > Shack sold at the time (mid-70s). Sure it ran a little hot and the > transformer vibrated a little bit, but... aren't electronics supposed to > do that? :) _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://liveaboardonline.com/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
