[sdiy] LED driver cable length

[grant at musictechnologiesgroup.com]

Long wire in back yard (shortwave antenna), automotive turn signal bulb,
other lead grounded to house "third prong". Loads of fun every lightning
storm for a lad of maybe 15 LOL...  I think my parents were either
hoping me or the house would go. ;-)

GB

> -------- Original Message --------
> Subject: Re: [sdiy] LED driver cable length
> From: Dan Snazelle <subjectivity at hotmail.com>
> Date: Mon, September 12, 2011 1:55 pm
> To: Barry Klein <Barry.L.Klein at wdc.com>
> Cc: synth-diy DIY <synth-diy at dropmix.xs4all.nl>
> 
> 
> Id love to hear more about lightning!!!
> 
> Sent from my iPhone
> 
> On Sep 12, 2011, at 4:44 PM, "Barry Klein" <Barry.L.Klein at wdc.com> wrote:
> 
> > Seriously.  I'm commenting from experience.
> > First, handling them killed them by me and the factory.  Anything above 10V
> > can kill them - that includes ESD from getting up from your non-ESD padded
> > chair.
> > CMOS has ESD protection, LED's don't.  9V is within the CMOS 4000 series
> > input tolerance.  ESD is not.
> > You want more?  Try measuring the EMP pulse on the long wire when lightning
> > hits nearby...
> > 
> > Barry
> > 
> > 
> > 
> > 
> > -----Original Message-----
> > From: Tom Wiltshire [mailto:tom at electricdruid.net] 
> > Sent: Monday, September 12, 2011 1:31 PM
> > To: Barry Klein
> > Cc: synth-diy DIY
> > Subject: Re: [sdiy] LED driver cable length
> > 
> > 
> > On 12 Sep 2011, at 19:49, Barry Klein wrote:
> > 
> >> You could get a transient inductive pulse through the cable upon 
> >> connect/disconnect that could overvoltage the LED.
> > 
> > Seriously?
> > 
> > Isn't this one of those "you could"s that is really a "..but you *could* win
> > the lottery"?
> > 
> >> Also ESD is something to worry about - especially if using white/blue
> > leds.
> > 
> > Again, ESD blowing up LEDs? I've never even managed to blow up a CMOS 4000
> > series using ESD. And I did try, although I don't wear many artificial
> > fabrics. A 9V battery was required, and even then I had to do it wrong. Now
> > *that* works for LEDs too.
> > 
> > I'm not really trying to knock what is probably technically correct advice,
> > but it just sounds all rather over the top for what is just an LED at the
> > end of a long wire. It's not like we're running a life-support machine off
> > this jack lead. The worst case is the synth player has to wave his hand in
> > time in the unlikely situation that the LED boxes die.
> > 
> > T.
> > 
> > _______________________________________________
> > Synth-diy mailing list
> > Synth-diy at dropmix.xs4all.nl
> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
> > 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy