Giantkiller moves forward into Full Heterodyning.

[aleks]

I have been trying to resolve an issue with the second and third oscillator channel. I can't find the problem, the chip works, the connections are correct with no shorts and the code looks correct. I will be connecting the second channel to the oscillator today. It will have full frequency range but not full precision. There will only be 512 values instead of 5120.

With such narrow resonances you may leave some resonances unnoticed after increasing the step size.

On another note, so your plot is actually reversed? (higher frequencies to the left?)

In that case I may speculate that 1 oscillation and 2 modulations are going on - in this case the leftmost sideband is missing due to roll-off you've mentioned, but the resonant frequency is same.

What's the scale of the graph? Knowing scale and deducing from those 2 modulations may suggest which lower frequencies are at resonance.

However, tuning to that resonant frequency may be useful: it can be vital at supporting lower-frequency self-oscillation as these frequencies may form a rather complex feedback system.

[aleks]

Jon, after seeing your plot at http://freeenergygroup.com/?page_id=48 I see that "resonance" picture is somewhat similar in both "high" and "medium" frequency ranges, so I think that something is "leaking" signal.

[Jon]

@aleks

Yes, The higher frequency is on the left and the lower frequency is on the right. The high and low band graphs may not line up correctly. I will see if I can add a frequency estimate in the graph shortly. In any case I can us the oscilliscope to find the exact frequencies for particular values. Also the the frequencies and output values are tightly coupled to the specific TPU that I am using. 

The graph is extreamly compacted and the raw data is available is csv format if you want to take a closer look.

I'm running some other tests currently but will post more information.

Thanks.

[EMdevices]

Feynmen,Ã,  can you label the x-axis on your graph?Ã,  Ã,  (is it sample # or frequencyÃ,  (KHz, MHz?))

Good work!!Ã, Ã,  So which resonant mode are you going to operate at?Ã,  To find out , place two pickup coils (in quadrature) and observe on a scope.Ã,  When you see the typical lag in phase, you know it's a traveling wave mode and not just an LC mode, then you can explore that.Ã, Ã,  That's what SM has told us anyway.

EM

[MACEDONIA CD]

HI

@marco    >>>   yes you   are raid   all this elktronics  stuff  dont need      <<<coil   magnet and  like recivers >>

@TO ALL    NO ELKTRONICS  ONLY WIRES  AND  <<S.M  WORDS my divices is very  frekfency sensitive >>>