Selfrunning cold electricity circuit from Dr.Stiffler

[gyulasun]

Could someone teach me about charge/discharge speed of a capacitor?

Hi,

Here is an explanation on your question:

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capchg.html    or see this:

http://www.tpub.com/neets/book2/3d.htm

Gyula

[fritz]

I measured (my) coil with LCR meter at 1kHz -  has about 400uH - but it
has less winding than the "original".

To measure the self resonance frequency - I operated the primary coil (9 turns)
with my siggen from 1-20MHz.
I connected the tip of my osc probe to one end of the AM coil. (....)
There are regularly resonances with 120% nominal amplitude every 1.5Mhz (est.)
and a 300% resonance overshoot around 10MHz.

I agree with your estimates for the values at 10 Mhz - to measure this exactly - I
have to repair my other LC meter which is capable of measuring even with 10MHz
frequency ...

Hi Fritz,  ok, thanks for your answer, I understand and agree most but please consider the oscilloscope probe has got a 13-15pF loading capacitance in parallel with its 10MegaOhm input resistance and that self capacitance significantly detunes the ferrite rod coil, right?  The best way to measure the self  resonance frequency would be to use a Grid Dip Meter (GDO for short) you surely know this calibrated LC oscillator that shows energy transfer to a passive tank circuit when it is near or at the resonant frequency of the passive tank.

Thanks, Gyula

mmmh, I didn?t connect the scope ground lead -
checked that, if I remove the tip slightly - is still in resonance.
I could measure it with my analyzer, well, know GDOs, but don?t
have one.
rgds.

[fritz]

Circuit #7 Photo:

I would be highly interested what happens if there is only
a single ground wire going to the al shield and to the circuit.
Right now there are 2 grounds - and if you keep in mind that
we have 18 MHz - these 2 grounds have not the same potential.

....

[linda933]

(This is the point why birds can sit on high voltage wires - and humans cannot)
(The capacity of a bird to ground is very low - evolutionary ;-))darwin?)

rgds.

Man on a wire

http://www.youtube.com/watch?v=HcalasGr_uk

This man is wearing feather-alike clothes, the wire is not that with
the real high voltage (look at the insulators).
I wont do that naked ;-)))
rgds.

Feather-like clothes lower the human body's capacitance?  This thread is really bringing out the (bird) brains, I guess.  Maybe Dr. Stiffler is wearing special feather-unlike-clothes?  I've heard some non-scientific arguments in my day, but this one is close to taking the cake!

Linda

[fritz]

@ Fritz - Hey in one of the pictures with the crowbar (When I expand it to full size) where you are holding the LEDS, I noticed that the primary is not connected at either end but the signal is going through the secondary to the LEDS in your fingers. How is that a replication of the Stiffler circuit since Stiffler has an open end on one coil? Are you just trying to show that you can hold an LED and get it to light by touching the right power source and your body being a good impedance match? You mentioned the importance of impedance matching - Just curious.

Also, that ebay site sells variable capacitors  - do you think that would be helpful in tuning? Stiffler used a silver dipped mica cap. Do caps have reactance speeds?

The reason I ask is in the Meyer circuit, US patent 4798661, Meyer describes what looks like an air plate capacitor submerged in distilled water. Now why would someone go though the hassle of creating that if a simple off the shelf capacitor will work? Could someone teach me about charge/discharge speed of a capacitor?

Sure electricity goes through water quite fast but the charge or bond angle change is about 1mm per second. I am trying to take what I learn from this in regards to distributive capacitance on a transmission line and apply it to Meyer circuit since I keep seeing and hearing similar terms.

Glad to see this forum go back to the CE circuit too.

Well - if you look at the name of the picture "coil as conductor" -
this is NO stiffler replica NOR impedance matching.
It?s just a picture with the leds, the ground, ambient ground from my finger.
(and the coil as connection); quite happy that somebody caught me ;-)
I don?t have the needed material so far (toy radio am coil) as well as I
don?t have the same type of breadboard/plate shield assembly.

I expect that the original circuit catches the energy in the same way I
do it here - with the difference that the coil + parasitary capacitors form
a parallel LC circuit wich oscillates with 18MHz. This is the reason why
the energy can be transfered using the parasitary capacitors - in my case
I have 50 Hz - no way to do it "one wire". Additional the impedance is matched
which gives this high output.

As long as the stuff is build on this breadboard - its quite difficult to judge,
where you have to put in the variable capacitor. Some of this stuff is forming
an LC circuit - if you put the cap in parallel to that you can of course change
the resonant frequency.

Almost any adjustable cap is designed for rf operation (at least for the frequencies
used here). There are ceramic and foil based trimmers  with up to 50pf maximum
capacity.

The resonance frequency is calculated by f = 1/(2*pi*root(L*C))
f in Hz, L in Henry and C in Farad.
In case you put an extra C in parallel Cnew = C+Cadded

I think that Meyer uses this C submerged in water to get somehow
a C with dielectric behaviour as a C in water. This C is used in a setup
where water is treated by use of electrodes - another capacitor of course.
If one C changes its properties (water temperature or whatever) the other
C will experience the same effect... does this make some sense to you ?
If you would need an adjustable C which should be tuned in a controlling
loop - this would be the easiest sollution - instead of measuring something
and tune a capacitor with motor or whatever.

Another idea is - that Meyer was so used to water caps as Keely to resonators;-)))
a waterhead.
Why taking a traditional cap if there is so much water around ?

The last idea - and maybe thats the reason - that tuneable caps are for rf and not
for high energy pulsed designs.

rgds.

rgds.