Thanks for figuring that out (not so) Lucky, I absolutely *HATE* facebook for that particular reason. Anything you want to do there (even a stupid birthday calendar....), you need to share your information, so far I never subscribed to anything that needs information sharing. However, it is documents like these that could change my mind for an instance. Obviously you were on the same wavelength!
I think to setup a phony account is the best way to go, get the file and share it on BT me thinks (if it is not there already). Michel On Feb 19, 5:33 am, Lucky <[email protected]> wrote: > Hey Grahame thanks for those links especially the GE manual, just what > I need to brush up on my theory. > > As a point of (possible) discussion there is one thing I totally > disliked. Upon first linking to the site 'Scribd' I/we are greeted > with a message: "You Must be Logged in to Download a Document...Login > with Facebook". > > Okay thinks I, logging in with Facebook AND giving away all my > details, allowing Scribd access to my profile , my friends profiles, > allowing Scribd to post on my wall...allowing Scribd access to my > wife, to sacrifice my first born etc only to be confronted with a > message when attempting to download....nope you can't have this unless > you pay us money! > Okay you only need pay a small sum for one days access or month/yearly > or upload something (How much? For 'upload credits'?) > > It is still con trick afaiak, if you have to pay a fee then they > should say so upfront NOT after I have given away MY details and all > the permissions for facebook etc (which is worth money in its self but > I did not charge for!). Let's face it we're already the 'product' not > the consumer being on facebook to start with but I am against any site > that is not upfront with any fees that may need paying and especially > when greeted with such an opening message! I now have to delve into FB > to delete those permissions given. > > As an aside there are of course 'ways and means' around it like a > greasemonkey script or youtube for instance more than likely posted by > people also peeved into sharing their details with nothing in return. > Had I been informed from the start that a small fee is payable I would > have gladly paid for such an informative (electronic pdf copy of) > book. Anyone have any thoughts on this or the like? > > On 18 Feb, 12:04, Grahame Marsh <[email protected]> wrote: > > > > > > > > > I just posted a link to Acton & Swift > > > Neale is here (download a pdf and read online) > > :http://www.archive.org/details/ColdCathodeTubeCircuitDesign > > > Glowlamp manual is > > here:http://www.scribd.com/doc/34672942/General-Electric-Glow-Lamp-Manual-... > > > Any more links folks? > > > On the yahoo site we had a book/magazine section - how can that best be > > arranged with google? > > > Grahame > > > On 18/02/2012 11:47, Dekatron42 wrote: > > > > Michel, have you read the books: > > > > Cold Cathode Discharge Tubes by Acton& Swift > > > Cold Cathode Tube Circuit Design by D M Neale > > > Glimmr hren und Kaltkatoden-Relaisr hren by Otto Paul Herrnkind > > > Glowlamp Manual by General Electric > > > Kaltkatodenrelaisr hren Dekadenz hlr hren by DR Roland H bner > > > Kaltkatodenr hren by Greiff > > > Electronic Counting Circuits Techniques& Devices by MULLARD > > > Ziffernanzieger hren by VALVO > > > > There is a lot about what happens inside a cold cathode tube in those > > > books with explanations about charge, deionization and stuff - way > > > above my head but it gave me a good ground to stand on when trying to > > > understand more about what happens inside these tubes, and it was > > > enough for me to understand it at a basic level. > > > > There are of course many more books that describe these phenomena, but > > > those are the ones that I have borrowed from libraries and looked > > > into. > > > > /Martin > > > > On 18 Feb, 11:56, Cobra007<[email protected]> wrote: > > >> I think you're right and that would explain why I can't really measure > > >> the capacitive component. You're talking about negative resistance, I > > >> had not looked at it that way but it sounds very reasonable, the > > >> voltage over the tube will decay while the resistance increases so > > >> that would indeed be negative. > > > >> I do indeed use a pulse with series resistor, I let the voltage drop > > >> from say 150V down to say 100V to turn the tube off. Normally, with a > > >> capacitive load, the tube's cathode would then immediately drop to > > >> -50V. This doesn't happen, it doesn't even go below 0V most likely > > >> because the negative resistance wins over the capacitive properties. > > > >> I think the inductive component is very small. At some frequency it > > >> should resonate I would assume but I can't see that in my step > > >> response so the inductance must be very very small. > > > >> Michel > > > >> On Feb 18, 1:51 am, John Rehwinkel<[email protected]> wrote: > > > >>>> How does a nixie behave in the first few hundred micro seconds after > > >>>> switching off. Is it resistive, capacitive or inductive? I would > > >>>> assume it to be capacitive but that is not exactly what I measure. > > >>> That's a really good question, and I'll admit I haven't attempted to > > >>> measure it. So, in the grand tradition, I'll take a guess at it. Said > > >>> guess is that the plasma stays ionized for a bit before the atoms > > >>> settle back down to ground state, so it would have the electrical > > >>> properties of an ionized plasma, which would be: negative resistance. > > >>> This would decay to capacitance as the gas became nonconductive. > > >>> there's of course inductance from the leads, and the capacitance and > > >>> inductance are distributed (especially in larger nixies), making a sort > > >>> of sloppy transmission line with varying characteristics. Now I want > > >>> to see if various nixies have resonant frequencies, and what I'd get > > >>> back if I hooked a TDR to a really big one. > > >>>> It > > >>>> seems more resistive, so I am wondering if this is normal or am I > > >>>> doing something wrong? > > >>> I'm curious as to how you're measuring this in the first place. Are > > >>> you using pulses with a trailing voltage and a series resistance, or > > >>> what? > > >>> - John- D lj citerad text - > > >> - Visa citerad text - -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
