I call Duane, "Dx" because I was studying Calculus when I met him.OMG! Two people on this forum with math references in their names!
And I think of my moniker as, "number twelve".
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I call Duane, "Dx" because I was studying Calculus when I met him.OMG! Two people on this forum with math references in their names!
Aleph Null, if you'll permit me to call you that, you're being more creative than I was. I was assuming the usual theory for how the lifters work by ejecting ionized air molecules backwards under the effect of an electric field.HP I say you're overthinking! To me it looks like OP just wants to use electrostatic repulsion between lifter and gnd instead of creating drive from reaction of ejected ions?
It turns out the higher frequencies attending practical operation of 'air core' power transformer topologies entail greater radiation and proximity/skin effect losses -- While the latter may be mitigated via 'special' winding technique (e.g. windings fashioned of 'litz wire', etc.) and the former via 'tuned' shielding -- said measures tend to compare unfavorably with ferrite (or Fe powder) core units as regards mass 'conservation' --- Then too are the more stringent resonant capacitor requirements (and, hence, overall driver weight)...Well said as a true protege of Hypatia.
But why is the power to weight so poor for Tesla coils, when they don't even need to have a core? Is the power loss rate so high?
Bob Clark
Careful, Bob! You'll swell her head even more (if that's possible!) -- Methinks Aleph(0) is descriptive of her hat sizeAleph Null, if you'll permit me to call you that, you're being more creative than I was. I was assuming the usual theory for how the lifters work by ejecting ionized air molecules backwards under the effect of an electric field.
But I am intrigued by your electrostatic propulsion idea. How would that work?
Bob Clrk
Um... Did I miss something? -- Who's Duane???I call Duane, "Dx" because I was studying Calculus when I met him.
And I think of my moniker as, "number twelve".
Ah Yes! -- The Vulgarian's Handbook -- Where would the web be without it?!and The Urban Dictionary because I'm so old I can't keep up with some of the modern slang.
"She was guilty then of Thinking, a crime much worse than all" -- Mason Proffit (proximate paraphrase)BTW, anyone who's curious to know who Hypatia was
It's natural enough that 'math buffs' should be drawn to electronics inasmuch as said discipline offers much in the ways of the abstract and the 'concrete' -- 'hands on intellectualism' -- It just doesn't get any better than thatmath references outside of specifically mathematical discussions
The component tolerances in electronics is one of the hardest things for me to overcome. As one who spent his life in precision machining losing the need for component precision is mind blowing.It's natural enough that 'math buffs' should be drawn to electronics inasmuch as said discipline offers much in the ways of the abstract and the 'concrete' -- 'hands on intellectualism' -- It just doesn't get any better than that
Best regards
HP
Ditto... some electronic components have tolerances too wide for me to accept in blind faith for practical purposes.The component tolerances in electronics is one of the hardest things for me to overcome. As one who spent his life in precision machining losing the need for component precision is mind blowing.
The component tolerances in electronics is one of the hardest things for me to overcome. As one who spent his life in precision machining losing the need for component precision is mind blowing.
I hear ya! Dig those "+20% -60%" Caps - Aye! Aye! Aye!Ditto... some electronic components have tolerances too wide for me to accept in blind faith for practical purposes.
It's also natural because some of them don't want to be prisoners of G.H. Hardy's vision of mathematics:It's natural enough that 'math buffs' should be drawn to electronics inasmuch as said discipline offers much in the ways of the abstract and the 'concrete' -- 'hands on intellectualism' -- It just doesn't get any better than that
Best regards
HP
Indeed! -- I fairly cringe at Boole's reaction should he somehow see what "they've done" with his erstwhile 'pristine' "Algebra of Thought" --- How truly abstraction is an ethereally beautiful state - sadly one cannot subsist upon 'appreciation' aloneIt's also natural because some of them don't want to be prisoners of G.H. Hardy's vision of mathematics:
"For Hardy, the most beautiful mathematics was that which had no practical applications in the outside world" (source)
Look at it this way... appreciation is calorie, fat, carb and gluten free!sadly one cannot subsist upon 'appreciation' alone
Yes. All of my life is not on this site. I have known Dx since 1974, but he's not an electronics nerd, he's a luthier and an audiophool. That's the best thing I have found for evaluating audio designs. Just don't let him see the insides...make him use only his ear.Um... Did I miss something? -- Who's Duane???
Component tolerances interfered with my learning process. I thought, "How can you know what to expect out of a design when the answer is +/- 20% the day the machine is built (and gets worse from there)?" My job as QC for precision analog measuring systems was the challenge I needed to take the magic out of circuits. When I started getting answers that were sloppy in the third digit, I became a believer.Ditto... some electronic components have tolerances too wide for me to accept in blind faith for practical purposes.
Aleph(n) denominates the transfinite cardinals -- Aleph(0) being "equal" to the 'count' of all integers - or, more precisely, the cardinality of the set of natural numbers -- and, hence, crudely equivalent to the polar magnatude of x/0 (x|x is a non-zero finite number) -- FWIW, outside of Set Theory/Transfinite Algebra, "Aleph(0)" is generally (albeit it dubiously) regarded as synonymous with "∞"...BTW, most of what I google for Aleph is, "the first letter of the Jewish alphabet". Wanna clue me in on the mathematical reference?
FWIW, in my experience, the 'disciples' of Cantor (including Aleph herself) pronounce it:I just say it as 'Alf OH!' and don't read anything into it.
No.. it's a soft C ... unless you want to pronounce my first name as "Kéiser" ...So then I suppose cmartinez Isn't "K-mart ineeze" huh?
by Jake Hertz
by Jake Hertz
by Ikimi .O