The Master Of Magnetics "Steven Mark"

[Motorcoach1]

sorry mannix

[Motorcoach1]

opps

[Mannix]

Lets look at something that's much more down to Earth. How about building a tiny tabletop model? Our transmitter will be a flyback transformer running at 30KHZ, 30KV. The receiver will be an identical device. Give both transformers a vertical antenna. How much energy can the receiver extract from the transmitter? If the transmitter's antenna is 10pF to ground, then when charged it carries 1/2*C*V^2 Joules of energy, or 4.5mJ. The transmitter charges and discharges this antenna 30K times per second, for a "sloshing" EM energy flow of 270 watts. If the receiver could "suck" each 4.5mJ pulse out of the fields, it could extract 270 watts at most (if the flyback transformer could handle the current!) A better estimate comes from connecting the two antennas with a capacitance. Suppose the capacitance between the antennas is 1pF. If the load resistance of the receiver causes the resonant voltage on the receiver to rise to a value of 1.414 times less than the transmitter voltage, then we've got a simple voltage divider. 30KV on the transmitter antenna, 21KV on the receiver. The receiver gathers 1.7mA of high-freq current. (At such high voltages, the 1pF between the antennas becomes a significant conductor.) The receiver ends up drawing 35 watts. Actually, if there was no load on the receiver, its voltage would rise until it was near 30KV. Just wind a secondary on the core of the receiving flyback and hook up a light bulb to draw the 35 watts out of the "sky". If Tesla used a megawatt transmitter at 5KHz, he probably could light some bulbs from 100KM away. (Ideally, that gives 2500 watts received.) Suppose we transmit at 100Hz? The wavelength is 3000KM and our receiver is probably within the nearfield region of the transmitter, so it can grab a significant portion of the 10KW. Hey, didn't Tesla believe that lower radio frequencies were better than high ones? For resonant power transmission they are, since the nearfield zone of a resonant receiving antenna is larger at low frequency, yet with no less power from the transmitter, and no less power flowing past the antenna. A small low-frequency resonator coil is "larger," so it intercepts more radiation.
JUst a thought

How does that relate to a tpu?
Misdirection??
The one wire stuff was in the Turbo thread...wrong place perhaps?

[duff]

Hello All,

I'm new to this group and have been doing extensive reading and watching  videos trying to get up familiar with the information given by SM.

I'm wondering if there are any vacuum tube circuits designs that have been done or is there any data available of tests using vacuum tubes. If so could you kindly point me in the right direction.


I have located some RCA resources that may be of interested. I hope this is not a duplication.


The following site has a collection of online books relating to vacuum tubes one of which is "Electron Tube Design" ( RCA 1962 )

http://triodetubes.com/content/view/5/6/


The next site relates to Early Color Television and includes documentation on a RCA Color TV Set 21-CT-7855U

You will also find a pdf file for the RCA CTC-5A deluxe chassis on this page.

http://bs.cyty.com/menschen/e-etzold/archiv/TV/rca/ctc5_e.htm


-Duff

[Moab]

Hi duff.

I have messed with the tubes some time ago, Still keep them around.
Mannix and Jdo-300 are tubers. I work with Jdo. (Jason) often I will mention to him you are interested in the Tube aspect of this research. Perhapps these gentlemen will point you in the right direction.  Moab,