Now you are making progress. And that 3rd dimension is non-linear and twisted, it goes through a transition between 300 MHz and 3 GHz where lumped constants give way to transmission line techniques.
Even better.
John
-- Yeah, sure... As long as what they\'re right about doesn\'t make you wrong.
-- Just one of the girls, huh? There\'s an interesting picture starting to emerge... JF
That I like women? That I'd rather be with one woman in bed than with
15 bored guys, drinking cheap beer, hanging out on dirty couches? You're just now figuring that out?Which would you prefer?
The frats I visited were full of gross guys who bragged a lot about their romantic exploits. The places were expensive, boring, noisy, and generally smelled bad. I didn't need to copy anybody's old term papers, or review last years's exam questions, which was one of the reasons a lot of guys joined frats. For less money, I had my own apartment with one clean couch.
Which would you prefer?
But why the fascination with my youth? Post something about electronics.
John
or.
you
I don't see that as a real transition in the extra dimension. That is an artifact created by the mechanical sizes we can do. Real transitions would be the places where the wavelength passes some size determined by physics.
BTW: We have 60Hz transmission lines near my house so the 300MHz lower edge on you 300MHz and 3GHz is a little high.
Some time back there was a great article in EDN using a current source to control the time of a one shot. I am fairly certain it was April's issue. They had a way that the value of a resistor controlled the time after you pressed a button that the heater turned off. By making the resistance negative, they made this time negative so that the heater turned off 20 seconds before you pressed the button.
In the context of a true (absolute, not incremental) negative resistor, as she clearly states, she's absolutely right. Where else would the energy come from?
Quit your silly village gossiping, he-said-she-said stuff. Quit acting like a 7-year old who's afraid of girls. Put that energy into getting your electronics right, and checking you circuits before you post them.
The circuit you posted was a crock. The opamp was railed low. You claimed behavior that clearly violated conservation of energy... nut-case turf. You can't bluster your way out of that.
She was right, you were wrong. Which is OK, but you were mean, sardonic, challenging, insulting wrong. Not smart for people who don't check their work.
It didn't matter how the current probe worked. It was obvious that the amp was railed, the current was flowing INTO R4, and they no simple circuit is going to violate conservation of energy.
I was uninformed about the trigger polarity of a 555. I thought there was only one kind of negative resistor, when there are actually two. I'm still trying to understand the fundamantals of that one. I mean, what's the difference between rotating an E:I graph 90 degrees clockwise, and rotating it 90 ccw? Maybe you can explain that to us.
No, I'm having fun. And you're not. I check my work; you don't.
John
OK, now I want it in a sot-23.
John
-- Nope.
That would require the use of extremely loose and sloppy definition of transmission line.
Sorry, no cigar:
IOW, it's perfectly appropriate for either application.
Hope This Helps! Rich
Think what you wish. The properties of RF types, such as controlled impedance, are not preserved in the power distribution types. So, it is not the same definition but two different definitions overlaid on the same term. See computer language term overloading, a relative of operator overloading from mathematics. See also disambiguation.
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That is what the power company calls them. :> It was a joke.
The power lines are actually long enough in some places that the transmission line effects do start to matter. Even though a wavelength is about half a million kilometers in space, the effects still matter, partly because the power levels are so high that 1% ends up big.
I wish to think that the dictionary is generally accurate.
"Same term" being the operative phrase here. You can have an RF transmission line, or you can have a power transmission line, and they both use the same word.
And don't think that the people who make power transmission lines don't have to consider the inductive, capacitive, and resistive effects, It's just that it's at 60Hz instead of RF.
Cheers! Rich
They normally are, however both dictionaries and encyclopedias have "false entries (which are used to detect copyright infringement)". They are often placed in the commonest of lookups.
Having done the calculations a few times recently they normally pay no attention to capacitance per se. Furthermore line impedances are length dependant when calculated at all, and there are many more differences. The math is nowhere near the same, thus nor is the physics that is modeled.
Have some fun by learning it, if you never learned it in school.
resistor.
Missed that part, oops.
I would be glad to discuss what i do know of power transmission lines and equipment at any time. Though there is still a lot more that i could learn if i had sufficient use to keep it refreshed.
What's different? The equations and the physics are the same.
John
You mean like capitalizing the word "I", or refraining from making claims that dictionary publishers print false definitions merely to catch a plagiarizer or copyright infringer. Yes, I'd say there is still much to learn about the world by you.
He's just addicted to making me wrong, even when I'm right.
Thanks, Rich
velocity factor is in the ball park of 0.7 300000km/s / 60Hz *0.7 = 3500km significantly short of "half a million"
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