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Too bad we lost Mad Hatter aka the Purple Multipactor. I gave the Colorado page numbers and these should be posted to see plainly.
Not lost, just took a step back to let the dust settle. Racing season is here and that's my busy time.
working on a couple different things, electrostatic disassociation of the H2 bond and electron fields- this relates to the plasma work I'm doing and also falls into the development of the multipactor which has led to some interesting theories that I have to explore as time permits. not many Co's still making VT's and the one that can do custom stuff has recent patents for classified stuff very similar to what I'm working on, conflict of interest and possible trouble there. proto-type will most likely be a vacuum chamber, that introduces issues all it's own on out gassing and contamination.
had a transformer go 'missing' (yeah like 200lbs go's missing!)in shipment set back the PS build above 100kv.
Lot's of papers to still sort thru, an interesting one by August Hund sent over recently by Garrett, busy and smart gent. Thanks.
I have some free time coming up, will sit and read then share.
The coils shown were designed for equal areas. Bronze was chosen for the primary to have maximum depth of penetration. Skin effect high for silver, a reflector. The primary is laminated to reduce eddy losses.
Thank you!
I used that design to get some understanding but I will try to build a crystalradio coil. In that case I should go for the equal mass or surface?
While reading the posts I could find very little information on the primary coil but perhaps I missed it?
The final diagram is calculated from the given dimensions and secondary frame description. From the given groove spacing and Tesla's description the secondary is technically 16 turns, the 17th turn being on the top insulators.
Also I've just spent an hour if not more looking through the same few pages in CS Notes but I can't find it, but somewhere towards the end Tesla reverts back to 20 (or 19) turns and as far as I know that's the final adjustment. I think this is mentioned when he's describing some of the pictures at the end.
It is not important that the number of turns be equal to Colorado. Wire length is best to be the EXACT fraction of wavelength that existed in Colorado, same with Z.
Equal reactance in ohms & suceptance in Siemens for both scaled and Colorado. Frequency in proportion to the square root of inductance, inductance in proportion to the square of the turns and radius, both divided by a factor.
L equal radius squared, turns squared this over 9 radius plus 10 length.
(a) Dielectric Energy Storage,
Suceptance, B, in Farad per Second
(b) Magnetic Energy Storage,
Reactance, X, in Henry per Second
Reactance = L multiplied by the radians per second? And I assume the same for susceptance? I'm reading through those notes now but it's 6:40am so I'm going to have to give it up for now and continue tomorrow.
Also what do you mean by "Frequency in proportion to the square root of inductance, inductance in proportion to the square of the turns and radius, both divided by a factor."?
The ratio of F to the square root of L should be equal on all scales?
Thanks for your help, I wish you luck with getting everything sorted out and have a good journey back into the bushes if you're already gone tomorrow, I'll be in touch one way or another if you're not back on here for a while.
100 Watt Transmitter & Power-Supply Stage1, Pt1
Power supply & Transmitter front panels (unfinished) need mA meters, paint job and other finishing touches:
100 Watt Transmitter schematic partly based on this. VFO & CIG Network not shown here (working on this to show later).
Transmitter build, the connecting wires are a dogs breakfast at the moment. I can now see why a common grounded chassis is normally used, much easier. Await a few other parts as yet unfinished but I expect to power up for the first time in about a week or so.
RCA 807 Tube close up: (Nerd eye-candy).
Power supply Schematic:
Power supply, Transformer, rectifier (silicon diodes) and a battery of capacitors to provide the B+750, B+250, 6.3V filaments and has 5V supply for tube rectifiers, when I take that path later on.
Large plate transformers & 304TL Tubes: Lucky to score these transformers for free, extracted out of ICP/ Mass Spectrometers. The large one would cost $8000 new! A collection of 304TL tubes, one is dead however. Matching capacitors, rectifiers and chokes not shown.
304TL close up. (More eye candy).
Primary Coil / capacitor arrangement for TMT / CIG is the next step, once the transmitter & PS is complete and all tests okay. Along with the secondary and extra coils. More on all of this later.
Sputins.
"Doesn't matter how many times you kick the coyote in the head, it's still gonna eat chickens". - EPD
Reactance in Ohms is Henry per second. The per second is two Pi times the frequency, this is called radians per second.
Frequency, or radians per second is one over the square root of L time C, so if L varies, the frequency varies as an inverse square root, example, four times L gives one half the frequency.
Inductance L varies with the square of the number of turns, example, twice the turns, four times the inductance. Its the same with the diameter.
So, F varies with square root of L, L varies with square of the turns, so F varies directly with length by combination of square & square root. All scales must conform to basic law.
A model must equal its original in two things.
Network analysis seeks two things:
1. Propagation, or the fraction of one wavelength.
2. Impedance, the ratio of magnetism to dielectric.
This is called the Transfer Function.
All networks have this pair of functions. Thus, to make a model (scale) network, it must have the same function results, one fourth wave, and 1000 ohms let's say, this result at the frequency of the model, which would be a fourth wave and 1k Ohm at the original frequency. In general L time C is propagation, L over C is Impedance.
If the original coil has a reactance of X ohms at its frequency, the model coil must have the SAME reactance at its frequency.
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