Body
Ole,
When you refer to the primary resonant tank, you are referring to your
antiphase transformer?
Your original antiphase transformer circuit that was providing extra
energy- My understanding is the Class D amp was being used a clean
sine wave source so the parametric pumping you are speculating on would
be derived from the buss pumping to the power rail on the half bridge or
some hetrodyning of the double and half frequency, are these your thoughts?
On the output side not accounting for the power supply depending on
frequency the clocking pulses could provide another source of
parametrics if the steep low pass filter were not doing its job. The
transformer you made looks as if it could pass some higher frequencies
along with your intended ones. But again your spectrum analyzer looked
pretty clean so I would rule that out if you were looking that high.
DId you try the half bridge mode with cap decoupled outputs prior to
moving on to the full bridge?
Lots of strange things go on inside the class D topology. Maybe go with
a class A for your designing as they are much less likely to add as many
unforeseen variables.
I have yet to read about the class E and the allegedly channeled data.
Page 12 is interesting concerning the buss pumping. Would decoupling
the output after the smoothing caps with some more diodes stop this
occurrence in a half bridge topology?
My understanding is when you changed to full bridge mode the power
supply is no longer heating up and you are not seeing excess energy.
With balanced topology I don't think the antiphase transformer can ring
as well. With balanced the PSRR goes way up and even harmonics way
down. If the energy is stochastic resonance as Hector often claims then
noise and distortion can be our friend rather than our enemy as is tamed
in regular audio circuits.
On 1/6/2018 5:30 PM, [email protected] [EVGRAY] wrote:
>
> Hi Mick,
>
> The primary resonant tank is not driven at its resonant frequency. If
> I remember correct it is driven at double the resonant frequency.
> Perhaps I should calculate or measure the resonant frequency again.
>
> In a true H-bridge configuration the current going through the
> freewheeling diodes of the two off state switches are used by the
> other two on state transistors that doesn't have to take current from
> the power supply rails. This should prevent the voltage on the power
> supply rails from increasing according to page 12 here:
> https://www.infineon.com/dgdl/an-1071.pdf?fileId=5546d462533600a40153559538eb0ff1
>
> Perhaps this parametrically change in voltage is what made the
> transformer give off free energy. The amplifier used at least as much
> power as was output by the transformer even though the power going
> into the primary LC-tank was only reactive power.
>
> According to this channeled interview with Nikola Tesla (Nikola Tesla:
> Nobody knows my story. It's Time to tell you EVERYTHING
> https://www.youtube.com/watch?v=WKKEH7IsjRQ) he recommends the class E
> amplifier of Nathan O. & Allen D. Sokal (1975) to drive tesla coils if
> he had lived today.
> https://wiki2.org/en/Power_amplifier_classes#Class_E
>
> http://www.g-qrp-dl.de/Projekte/80m_E-Endstufe/classEampl.pdf
>
> Regards
> Ole
>
>
>
> ---In [email protected], <mkjekyll@...> wrote :
>
> Hi Ole,
>
> When you bridge the impedance you can drive easily is now doubled
> however the push pull format is what is probably not letting the
> resonance ring. The resonant part of the circuit needs to wave freely
> in the breeze, remove anything clamping it.
>
> I still think you will have a problem accepting the energy back into
> the amp backwards in your four quadrant concept, just decouple supply
> with some large caps and diodes and move forwards.
>
>
> On 1/2/2018 6:47 AM, onielsen@... <mailto:onielsen@...> [EVGRAY] wrote:
>
>> Hi Mick,
>>
>> "Do PF oil caps have lower ESR with the higher voltage spec
>> models like the lytics seem to?"
>> I don't know. But being physical bigger for thicker dielectric
>> the foil area is bigger too so I suppose the ESR is lower too.
>> Check the datasheets.
>>
>> "Can you recommend from experience any self healing high voltage
>> PF correction caps?"
>> No. Check the different manufacture catalogues.
>>
>> "...hope to see more of your experiments soon."
>> They're not working too well at the moment regarding OU. I'm
>> using the class D amplifier in bridge mode (two phased floating
>> outputs) to prevent power supply pumping. Only slightly over
>> unity shows up now.
>>
>> Regards
>> Ole
>>
>>
>>
>> ---In [email protected] <mailto:[email protected]>,
>> <mkjekyll@...> <mailto:mkjekyll@...> wrote :
>>
>> Ole,
>>
>> Thanks for that!
>> Was looking two days back and kept getting empty directories,
>> weird...
>>
>> Do PF oil caps have lower ESR with the higher voltage spec models
>> like the lytics seem to?
>> Can you recommend from experience any self healing high voltage
>> PF correction caps?
>>
>> Have a great 2018, hope to see more of your experiments soon.
>>
>>
>> .....
>
>