The Last TPU Development On The WWW

[Bruce_TPU]

Phantasm

That Youtube video was not relevant to the subject.

Bruce

It could be everybody are so stupid, but thanks to god, we have you, who always see, what we don't. No offense, just joking 

Anyway, You have to be happy, you know, what to do, so go build a device, and prove us your point! 

Hi Chef,

LOL  I am not trying to come across that way, but I do get VERY frustrated with how little regard most give to the things that SM wrote to us, not realizing all that he risked to do so. 

And yes I am building "a device".  I actually have one built, and I am designing another.  I also have ordered my three triode tubes, but I will need to find three more.  Now that I THINK I know what to design, it has me researching it out and designing, hours everyday.  I also have a controller being built soon for me.

Happily building, and priding myself in being a "good listener",

Bruce   

[giantkiller]

Good Friday and have a happy Easter so that we all could see and should give to the cause.

--giantkiller.

[EMdevices]

I recently had an occasion to learn a bit more about vacum tubes, and there are a few good references online.  I found out that Mr Mark mentioned some things about tubes that are not quite right or correct.  One thing is the transit times, which he made it sound like it's realy fast, etc..., but in reality vacum tubes have very slow transit times which limit their operation to lower frequencies. This problem can be fixed by increasing the VOLTAGE from PLATE to CATHODE, so that the electrons are accelerated a lot more and pick up more speed and hence cross the gap faster.  The other solution is to reduce the distance between the electrodes, so that the electrons can get across quicker.  The latter solution seems to be used in the UHF tubes, which are smaller  (ACORN type, etc..)

SM also made mention of observing some interesting signals from tubes and transformers, and I wonder if he observed SECONDARY EMISSIONS.  These are noticeable in TETRODES, due to the extra grid, but I'm sure one can observe these signals with the other tubes given unusual operating parameters, like higher voltages on the plate and grid, or not biasing the CONTROL GRID correctly.    He did mention the 5U4 rectifying tubes and these are tubes with two diodes inside, just a plate and cathode which is the DIRECTLY HEATED type of cathode, meaning just the thoriated filament  (or maybe it's oxide coated, not sure)

Another interesting fact I learned is that triodes have a lot of INTER-ELECTRODE CAPACITANCE which causes FEEDBACK from the plate to the CONTROL GRID, which motivated the development of the TETRODE and due to the SECONDARY EMISSIONS problem of the TETRODE, the further development of the PENTODE, which now has 3 grids, the CONTROL, SCREEN, AND SUPRESSOR GRIDS.

Overall,  the transistors are so much better and faster, etc.. etc..., contrary to what SM discussed in this letters to Lindsay,  so I get a feeling SM is an older gentlemen who has not fully transitioned to the new semiconductor technology, for whatever reason, perhaps nostalgia, which is entirely OK.  By the way, transistors do have their limitations, and tubes are still used today in very special applications.

Anyway, I thought I share that with you for whatever it's worth.

EM

[Phantasm]

On the previous page, tsl recommends "Energy density and stress: a new approach to teaching electromagnetism"

I was able to find it and post it..
http://www.overunity.com/index.php?action=tpmod;dl=get264
I found it here:
http://www.physikdidaktik.uni-karlsruhe.de/publication/ajp/Energy_density_stress.pdf
(alt link)

Does anyone have a copy of "The large-scale structure of spacetime" he suggests reading?

[gyulasun]

Look at what the master said on page 10 of the book or page 6 of the pdf file:

http://www.scribd.com/doc/14131382/Free-Energy-Device-Handbook

My eyes are not as good as they used to be. Some one, please do an OCR or find a better copy.

Hi,

You can read the full Century Magazine article in good quality here:

http://www.tfcbooks.com/tesla/1900-06-00.htm

The text you referred to starts well above 'Diagram b'  OBTAINING ENERGY FROM THE AMBIENT MEDIUM,   about more than half way down of the long htm page. 

rgds,  Gyula