Giantkiller moves forward into Full Heterodyning.

[Feynman]

Fantastic; thanks!

[innovation_station]

 

i must say some thing with all this tube chat .....


lol


KEEP IT UP!!!

IST

i think sm recomended the 6bq7a tube.....    why?  it is a triode tube vhf found in old tvs.....    hummmmm....    not cuz it works from a dc battery and it is a real efficient high speed switcher ?!?!?!?!?!?!

no way !!

[Feynman]

Marco:

What is the best general amplification tube?  I have access to 12AX7, is this sufficient? If not , what is best general signal amplification tube with fast response time, something to replace the IRF840 MOSFET.  The signal coming in would be 3-5V .  Also, do you have any decent schematics for an amplifier... lastly, you mentioned early that the plate voltage is DC.   Is this correct?

Thanks,
Feynman

[sparks]

Quote from GK

" Anode and cathode but no physical field. Tubes conduct through space. Solid state conducts through substrate layers. Patent 568177 included just for grins. Ion field and no tubes. "

Ah yes the spark gap. Tesla's Earth Field detector.  I think the magnetic field pulse of the Earth wanders in freq and strength.  This is the frequency we are trying to exploit so it's a damn good idea to know what the hell it is before we try to resonate it. 

   Now if I want to know what is happening in a circuit I grab up an ammeter and voltmeter and sometimes an oscope.  Inside the ammeter we have this wonderful device that converts a magnetic field into voltage.  It exploits the hall effect.  It is so sensitive that it needs to be shielded from the ambient magnetic field of the Earth.  I guarntee Tesla Moray Leedskin  SM all had to sense the Earth field before they collected it's energy and amplified it.  SM said put the control circuits inside the tpu coil cause if you put them outside the incoming current is going to fu the Earth field sensor that is a vital component of the system. 

  We don't need to couple into some mysterious energy of the aether:  just build an ammeter for the pulsating magnetic field of the Earth.

[giantkiller]

The 6BQ7A is an all glass miniature VHF double triode and is internally screened.
A valve like this would be used for RF amplification, or frequency multiplication. In the latter case the valve is operated as a non liner amplifier. This causes harmonics of the signal frequency to appear in the anode current. The anode tuned circuit is then chosen to resonate at one of the harmonics, usually the second or third.

Something for free...

http://www.thetubecenter.com/tubelist7.html

--giantkiller.