The "Diode"

[IcyBlue]

Hi,

http://pixerve.de/37752/FE.html

this, unfortunately, is just an artistic drawing of the device which is based on a misinterpretation of some image reduction artefacts. This drawing is ought to show a direct heated vacuum diode, but even in this case it is wrong. It more likely shows a upside-down constructed vacuum triode. Nice drawing, but don't rely on this.

The 'filament' in the real image is just a blurred reflection of light on the copper wire.

[pese]

NO ,
an Triode is "nonsens" , cant be drive on "gate" .
2. if this is triode , it give not "kathode" !
because the heater is nothing connected  inly with "pickup" coil" for the heatervoltages.

this "zigzag that is shown in some diagramms is NOT the Grid od gate ! This is the Kathode of the tube.

possibly you will try to take some TV Diodes (stack-up) that can handle over 25.000 each .

http://ch.to/FE  (only in german language , unprofessioal pages)

[IcyBlue]

please look again on what I wrote. I did not say the device in the machine is a triode, I said the device in the drawing looks like a triode. This is a complete different business. The orderering of the parts in the drawing is (from outside to inside) filament (yellow), getter (red), plate (blue) - and this gives an upside-down constructed triode. Like it or not. However, the thing on the real machine has only two connections and no filament, hence it can not have a heated filament, nor could it be a triode.

BTW: you can drive a triode in various configurations, even with a grounded getter or by feeding your input to the kathode instead to the getter. This is hardly known anymore these days but was common knowledge among the RF enginers in the old days.

[pese]

Ok , yes ok . understand now (my english is not the best.
i am workink wit tube long befoer 1950
and now i habe olso about 500 pcs in stock , that i will not more sell.

Ok this testakia "self made diode" shown like triode m but this "gitter" is
fixed th the cathode , and is holding (i think so) only this
2 cathode tubings , that hold the heating filaments inside,

some more  to understand this Testatika please see:

http://pixerve.de/41903/pese.html  PICTURE (Scematics)

http://ch.to/FE  (most in german ...sorry)

pese

[Lycanthropist]

There are two main pics in circulation; one of the 3KW machine, and the other of two smaller 100 watt ones with S. Marinov smiling nearby.

Of the two smaller machines (black one and red one), I would like to point out that the black one has a very clear picture of the "diode" atop the apparatus.

It has one large copper coil with horizontally placed connection leads, and a "grid" inside the coil that has TWO MORE connections leading DOWN from the assy. These seem to contact the rims of the disks with verticle brushes.

There is a "glowing" line across the center, which is obviously an artifact left from the camera flash. I believe that this camera flash is being misinterpreted as a heater filament in ALL pics of the machines.

In the "red" machine, the "diode" atop the assy is not round, it's SQUARED, and seems to consist only of coils of differing gauges, wrapped as to make a frequency doubler ... this would account for the unit's RF-frequency energy after only a few oscillations of frequency multiplication, without the need for a "diode".