Body
Ole,
Maybe he has a neo on the core to get it close to saturation.
On 12/30/2018 4:43 PM, [email protected] [EVGRAY] wrote:
>
>
> Hi Norman, Mick,
>
> I wonder if Roman Karnouhov (Akula0083) is driving the core into
> saturation by a sequence of pulses in his self-runner lanterns. He
> shows the collector voltage of the output transistor that drives the
> primary coil in his lantern going negative:
> https://www.youtube.com/watch?v=nl9E8F1gOD0 (21:58).
> The auto generated subtitle translation of this video isn't too good.
> The negative biasing happens while the transistor is supposed to be
> forward conducting by having positive base signal. The current through
> the winding isn't shown to actual see what happens. Roman claims the
> effect to be ferrorresoannce which requires the core to actually
> saturate. It's also claimed that the rise time of the primary coil
> signal must be faster than the period of the ferroresonant frequency.
> Such short pulse periods at this low voltage shouldn't saturate the
> coil unless it is already biased close to the saturation current. This
> could actually be the case with the unidirectional succeeding pulses.
> Roman doesn't show the phasing of the primary to secondary coils. But
> if the secondary current flows while the primary current is off and
> the converter runs in continuous mode (i.e. the current never goes to
> zero) the working point of the magnetization can be put around the
> saturation level (the knee point of the magnetization curve). This
> allows storing magnetic energy in the core to be able to saturate it
> by adding only a small amount of extra energy. This is then done by
> the very short pulse that saturates the core and thus makes the
> inductance of the windings almost vanish which increases the current
> through the windings. Roman calls this the inertia of the current. As
> the current is always continuous through an inductor (i.e. no jumps
> are allowed) only the voltage across it can jump or change sign to
> switch the power direction from absorbing energy to giving off energy.
> But the voltage across the primary coil doesn't change sign. Instead
> the voltage across it increases to more than the supply voltage by
> crossing the ground level (0V). As this voltage is greater than the
> input voltage the energy can't flow from the voltage supply and thus
> either must exit the primary winding through the reverse biased
> transistor or exit through the secondary winding. As we don't know the
> phasing of the windings the current of the secondary can go through
> one of the two output diodes (VD3, VD4) to either the LEDs or back to
> the voltage supply capacitors.
>
> This image is copied from the beginning of the video. The circuit in
> the blue box to the right isn't finished or shown in the video.
>
> Regards
> Ole
>
>
>
> ---In [email protected], <nwootan@...> wrote :
>
> https://www.electronics-tutorials.ws/electromagnetism/magnetic-hysteresis.html
>
> Please understand that Tesla totally understood the BH curves of the different types of iron and steel. Tesla advocated driving soft iron cores into deep supersaturation where as Ole has pointed out the L value of your inductor disappears. The simple door buzzer experiment is a classic example of the anamalous spike output because the iron core material is so soft grade of iron, you can carve off a sliver with a sharp knife. It is dead soft iron. I wanted to make soft iron cores from electrolytic iron or Ferricpentacarbynol which you can sinster into any shape you want. The iron wire coils were experimented with by Tesla and you can see by the above charts that they saturate very early on the scale. Tesla experimented with a coil device that used the idea of popping in and out of the saturation point which is a variable inductor effect which in amplified current. The rapid varying capacitor effect is used in the Hyde generator which in effect magnifies voltage (electron pump).
>
>
> On 12/29/2018 6:59 PM, Mick mkjekyll@... <mailto:mkjekyll@...>
> [EVGRAY] wrote:
>
>>
>>
>> Norm,
>>
>> BTW this should remind you of your mirror image coil experiment that
>> cannot be replicated by simply switching polarity. Pretty cool
>> how one
>> version of it transmits through a Faraday cage by design. This
>> system
>> is a very high Q design so requires the fine level of assembly Warren
>> and Sven also example in their work.
>>
>> As far as taming the magnetoelectric event yes it is quite the
>> challenge
>> but why not, already have a trash can full of deactivated sand,
>> might as
>> well keep on going when the new thyratrons arrive.
>>
>> Can you elaborate on your experiments utilizing iron wire coils
>> and what
>> you found with this investigation?
>>
>> Here is an antenna design that generates and receives Tesla's
>>
>> hyper-luminal waves
>>
>> http://www.freepatentsonline.com/y2007/0013595.html
>>
>