No mix-up (I knew you meant the filaments) but a misunderstanding about what you want to measure probably.
I had understood from your expression "the ability to instantly transmit" that you were expecting a delay between emitter current onset (= HV onset) and collector current onset, maybe due to the flight time of whatever constitutes or initiates the filament. There will be no such delay, that was my point, except of course the subnanosecond speed of light delay for Coulomb forces to act across a few tens of cm, even if it takes 50 milliseconds for the "whatever" to cross the gap so that one might expect 50 milliseconds or more would elapse before current comes out the bottom of the pan. Michel ----- Original Message ----- From: "Horace Heffner" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, June 06, 2007 2:43 AM Subject: Re: [Vo]:ion currents in pingpong balls > > On Jun 5, 2007, at 3:28 PM, Michel Jullian wrote: > >> If I understand correctly what you want to do it wouldn't work >> Horace, the signal would be transmitted instantly regardless of the >> carrier velocity. Think of the gap as a capacitor, any current >> entering one armature leaves simultaneously the other armature, >> independently of any "real" current between the armatures. > > > Sorry about the mix-up! I see you are talking about the "thruster". > In an effort for clarity I tried a while back to change the thread > name for Bill Beaty's filament ion jets topic to "Filament ion jets" > as opposed to "ion currents in pingpong balls" or "Miklos Borbas > Thruster??" which are about the Miklos Borbas Thruster. > > The following post is 100 percent about Bill Beaty's filament ion jet > topic, so I should have changed the thread name to make that clear. > This is not about armatures at all. > > I think there is a huge difference in the electrical qualities of a > long resistive filament and a 6" air gap, and that would show up in > its ability to transmit a signal. It should be easy to distingish > between when a filament is present or not, as the AC signal onset > will be abrupt, either on or off. > > Regards, > > Horace Heffner > > >> >> ----- Original Message ----- >> From: "Horace Heffner" <[EMAIL PROTECTED]> >> To: <[email protected]> >> Sent: Wednesday, June 06, 2007 12:59 AM >> Subject: Re: [Vo]:ion currents in pingpong balls >> >> >>> A definitive test for thread vs drops would be the ability to >>> instantly transmit an AC signal or fast pulse chain along the >>> thread. You have already determined the thread velocity to be 5 to >>> 10 MPH. It would take a couple isolation transformers T1 and T2, one >>> with primary in series with each electrode, each primary and >>> secondary coil possibly made from a few turns of 20 KV test lead >>> wrapped around a small ferrite core, an oscilloscope on the secondary >>> of T2, and a sparker circuit consisting of a HV DC supply and maybe >>> very small HV cap to discharge through T1 secondary of the isolation >>> transformer coils. Might take some filter inductors F1 and F2 to >>> prevent the signal from leaking through the power supply. >>> >>> >>> ------HV---------- >>> | | >>> | | >>> F1 F2 >>> | | >>> | |---Ground >>> | | >>> T1===Sparker T2===Oscilloscope >>> | | >>> | | >>> ------> |-------- >>> Filament Gap >>> >>> Fig. 1 - Jet spark circuit >>> >>> Requires fixed font like Courier to view >>> >>> >>> Regards, >>> >>> Horace Heffner >>> >> >
