Body
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 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 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 https://wiki2.org/en/Power_amplifier_classes#Class_E
http://www.g-qrp-dl.de/Projekte/80m_E-Endstufe/classEampl.pdf 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.
....