Tubes?

[Grumpy]

"Produces FE" with switches sparks relay Inductors Tubes, as want you.
Never with Semiconductors.
In  THESE RANGES  (Areas)  it experiences to find FE ZPE , radiant Power and so on

Gustav Pese 

Yes, Pese.  You have listed many ways.

Switches, sparks (gap), relays, inductors, tubes - and so few see it. 

[pese]

Pese,

I've never seen a semiconductor switch that did not have a small reversal when switching.  Even the newer SiC type still have this reversal.

all transistors hve in both way an avalanche  or resistance effect-
that let breckdown the semiconductor (by leakage time voltage).

germaniumtransistors heve an breakdown , in reverse mode , mostly in same voltage.
but germanium-drift transistors (exp for TV flyback transformers (16khz) have only 0,2 Volt in reverse mode.(AU106 expl)

Silicon Transistors have in reverse mode an avalanche effect like an zener diode.

approx 7 volt  . some  power transitor (BU208) exacty 12 volts (up to 4 Amp!!), and old type of PLANAR Transistor als litltebit higher.
some "unusal silicon transistors as 2S202 enz have this over 20 volts.  Tat was my prof and buisiness over 40 years..
i have invented also the avalanch trigger effect in silicon transistors an is was published in the nederlands ELEKTUUR
as sawtooth-Generator . Some jears later  an US Radio Magazin have "take" this and published as NEGISTOR .
I have done more in this "area" that can belived from most folks.

Accept only , this semiconductor to use in FE circuits is an wrong way . an way for return .  G.P.

[Grumpy]

Pese,

To use "true switches" for these effects is the "true way".

Can semiconductors be used in an "indirect way" to produce these effects?

[pese]

i think not, because not any  funtion from an "true switch" can be translated into an semiconductor.

ris time  fall time , peack voltages will be citted by avalanche effect of semiconductor (or surpressed from the
-speed- . no reverse voltages can be build up  , and so on. also capacitance of transistors (from fet also higher.

also we must not forget , that  the sparls , produce am wide spectrum of halmotics  from KILOHERTZ to GIGAHERTZ and "SURE" over this range !! Nobody give attention on it !!

(The same : Tesla COIL work with SPARK-GAPS !! ALL this Circuits , and Scematics that will do this by
semiconductor ore veb Tube Oszillators to TRANSMIT 100 zo 180Lht in the COIL . IS NOT THE SAME !!
WILL mot Works as an "originally Tesla-Coil" . It is not more than to construcht an ORDINARY "LONG-WAVE TRANSMITTER (i done this as child fto, 10 jears) Sorry... The TESLA Circuits and constructions are OTHER Technics, thati also dont truely understand , so i must also "educate myself",(in my old days :-) )

G.Pese

[innovation_station]

use a fet with a spark gap or a relay or ?? or??

hummm

ist

the fet as a switch (digital) spark gap  or others mentioned (mechanical)  the combo of the 2 make radient engery  controlable by ss no?