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design | An unusual Oscilloscope phenomenon
There are 154 messages in this thread.
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An unusual Oscilloscope phenomenon - David L. Jones - 2009-06-24 22:18:00
Check out a rather unusual phenomenon you can see on your oscilloscope in my latest blog (#14): http://www.alternatezone.com/eevblog/ See if you can get it to happen on your scope! I'll offer a free subscription to my blog for the best screen shot posted :-> Oh, and the probe doesn't have to be shorted either. Have fun. Dave. -- ================================================ Check out my Electronics Engineering Video Blog & Podcast: http://www.alternatezone.com/eevblog/
Re: An unusual Oscilloscope phenomenon - Dirk Bruere at NeoPax - 2009-06-24 22:49:00
David L. Jones wrote: > Check out a rather unusual phenomenon you can see on your oscilloscope in my > latest blog (#14): > http://www.alternatezone.com/eevblog/ > See if you can get it to happen on your scope! > I'll offer a free subscription to my blog for the best screen shot posted > :-> > > Oh, and the probe doesn't have to be shorted either. > > Have fun. > Dave. Got it immediately, because I once worked in lab that had cheap plastic chairs that generated 1cm sparks when you stood up! -- Dirk http://www.transcendence.me.uk/ - Transcendence UK http://www.theconsensus.org/ - A UK political party http://www.onetribe.me.uk/wordpress/?cat=5 - Our podcasts on weird stuff
Re: An unusual Oscilloscope phenomenon - 2009-06-25 00:42:00
"David L. Jones" <a...@gmail.com> wrote in message news:h8B0m.53620$F...@newsfe12.iad... > Check out a rather unusual phenomenon you can see on your oscilloscope in > my latest blog (#14): > http://www.alternatezone.com/eevblog/ > See if you can get it to happen on your scope! > I'll offer a free subscription to my blog for the best screen shot posted > :-> > > Oh, and the probe doesn't have to be shorted either. > > Have fun. > Dave. > -- > ================================================ > Check out my Electronics Engineering Video Blog & Podcast: > http://www.alternatezone.com/eevblog/ > > When I worked a Century Data we had a problem with our new reel to reel vaccuum column tape drive when ever someone would walk by the drive when it was reading it would get data errors. The problem was that the shield on the cable from the heads to the preamp was grounded on both ends. Bob
Re: An unusual Oscilloscope phenomenon - John Larkin - 2009-06-25 01:01:00
On Wed, 24 Jun 2009 21:42:07 -0700, <c...@att.net> wrote: > >"David L. Jones" <a...@gmail.com> wrote in message >news:h8B0m.53620$F...@newsfe12.iad... >> Check out a rather unusual phenomenon you can see on your oscilloscope in >> my latest blog (#14): >> http://www.alternatezone.com/eevblog/ >> See if you can get it to happen on your scope! >> I'll offer a free subscription to my blog for the best screen shot posted >> :-> >> >> Oh, and the probe doesn't have to be shorted either. >> >> Have fun. >> Dave. >> -- >> ================================================ >> Check out my Electronics Engineering Video Blog & Podcast: >> http://www.alternatezone.com/eevblog/ >> >> > >When I worked a Century Data we had a problem with our new reel to reel >vaccuum column tape drive when ever someone would walk by the drive when it >was reading it would get data errors. The problem was that the shield on the >cable from the heads to the preamp was grounded on both ends. > >Bob > That's usually the best way to ground shields. John
Re: An unusual Oscilloscope phenomenon - miso@sushi.com - 2009-06-25 01:28:00
On Jun 24, 7:18=A0pm, "David L. Jones" <altz...@gmail.com> wrote: > Check out a rather unusual phenomenon you can see on your oscilloscope in= my > latest blog (#14):http://www.alternatezone.com/eevblog/ > See if you can get it to happen on your scope! > I'll offer a free subscription to my blog for the best screen shot posted > :-> > > Oh, and the probe doesn't have to be shorted either. > > Have fun. > Dave. > -- > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > Check out my Electronics Engineering Video Blog & Podcast:http://www.alte= rnatezone.com/eevblog/ Hey, is that Chinese take-out I spy?
Re: An unusual Oscilloscope phenomenon - David L. Jones - 2009-06-25 02:40:00
m...@sushi.com wrote: > On Jun 24, 7:18 pm, "David L. Jones" <altz...@gmail.com> wrote: >> Check out a rather unusual phenomenon you can see on your >> oscilloscope in my >> latest blog (#14):http://www.alternatezone.com/eevblog/ >> See if you can get it to happen on your scope! >> I'll offer a free subscription to my blog for the best screen shot >> posted :-> >> >> Oh, and the probe doesn't have to be shorted either. >> >> Have fun. >> Dave. >> -- >> ================================================ >> Check out my Electronics Engineering Video Blog & >> Podcast:http://www.alternatezone.com/eevblog/ > > Hey, is that Chinese take-out I spy? No. Where? Dave. -- ================================================ Check out my Electronics Engineering Video Blog & Podcast: http://www.alternatezone.com/eevblog/
Re: An unusual Oscilloscope phenomenon - miso@sushi.com - 2009-06-25 03:50:00
On Jun 24, 11:40=A0pm, "David L. Jones" <altz...@gmail.com> wrote: > m...@sushi.com wrote: > > On Jun 24, 7:18 pm, "David L. Jones" <altz...@gmail.com> wrote: > >> Check out a rather unusual phenomenon you can see on your > >> oscilloscope in my > >> latest blog (#14):http://www.alternatezone.com/eevblog/ > >> See if you can get it to happen on your scope! > >> I'll offer a free subscription to my blog for the best screen shot > >> posted :-> > > >> Oh, and the probe doesn't have to be shorted either. > > >> Have fun. > >> Dave. > >> -- > >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > >> Check out my Electronics Engineering Video Blog & > >> Podcast:http://www.alternatezone.com/eevblog/ > > > Hey, is that Chinese take-out I spy? > > No. Where? > > Dave. > -- > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > Check out my Electronics Engineering Video Blog & Podcast:http://www.alte= rnatezone.com/eevblog/ On the right. Eh, probably an open box.
Re: An unusual Oscilloscope phenomenon - Robert Baer - 2009-06-25 04:01:00
David L. Jones wrote: > Check out a rather unusual phenomenon you can see on your oscilloscope in my > latest blog (#14): > http://www.alternatezone.com/eevblog/ > See if you can get it to happen on your scope! > I'll offer a free subscription to my blog for the best screen shot posted > :-> > > Oh, and the probe doesn't have to be shorted either. > > Have fun. > Dave. Look at a piece of blank paper and you will see what i see on that site. Therefore the mashed and flattened tree wins.
Re: An unusual Oscilloscope phenomenon - David L. Jones - 2009-06-25 04:01:00
m...@sushi.com wrote: > On Jun 24, 11:40 pm, "David L. Jones" <altz...@gmail.com> wrote: >> m...@sushi.com wrote: >>> On Jun 24, 7:18 pm, "David L. Jones" <altz...@gmail.com> wrote: >>>> Check out a rather unusual phenomenon you can see on your >>>> oscilloscope in my >>>> latest blog (#14):http://www.alternatezone.com/eevblog/ >>>> See if you can get it to happen on your scope! >>>> I'll offer a free subscription to my blog for the best screen shot >>>> posted :-> >> >>>> Oh, and the probe doesn't have to be shorted either. >> >>>> Have fun. >>>> Dave. >>>> -- >>>> ================================================ >>>> Check out my Electronics Engineering Video Blog & >>>> Podcast:http://www.alternatezone.com/eevblog/ >> >>> Hey, is that Chinese take-out I spy? >> >> No. Where? >> >> Dave. > > On the right. Eh, probably an open box. Yep, an open Altronics box! Curiously though the contents were made in Australia and not China - how novel! Dave. -- ================================================ Check out my Electronics Engineering Video Blog & Podcast: http://www.alternatezone.com/eevblog/
Re: An unusual Oscilloscope phenomenon - TonyS - 2009-06-25 04:31:00
John Larkin wrote: > On Wed, 24 Jun 2009 21:42:07 -0700, <c...@att.net> wrote: > >> "David L. Jones" <a...@gmail.com> wrote in message >> news:h8B0m.53620$F...@newsfe12.iad... >>> Check out a rather unusual phenomenon you can see on your oscilloscope in >>> my latest blog (#14): >>> http://www.alternatezone.com/eevblog/ >>> See if you can get it to happen on your scope! >>> I'll offer a free subscription to my blog for the best screen shot posted >>> :-> >>> >>> Oh, and the probe doesn't have to be shorted either. >>> >>> Have fun. >>> Dave. >>> -- >>> ================================================ >>> Check out my Electronics Engineering Video Blog & Podcast: >>> http://www.alternatezone.com/eevblog/ >>> >>> >> When I worked a Century Data we had a problem with our new reel to reel >> vaccuum column tape drive when ever someone would walk by the drive when it >> was reading it would get data errors. The problem was that the shield on the >> cable from the heads to the preamp was grounded on both ends. >> >> Bob >> > > That's usually the best way to ground shields. > > John > > IIRC head signals mostly went via twisted pair. If they had a shield as well we would certainly not ground them on both sides. Tony