Quote from: TinselKoala on April 19, 2017, 05:37:25 PM
Itsu, It looks like you are getting very close to having the same resonant frequency on both "primary" and "secondary". I don't know what the result would be when you get them perfectly matched; in DRSSTCs it results in maximum power transfer between the coils, I think.

It would be very nice to be able to look at these things with a Spectrum Analyzer. Our scopes can probably do limited FFT analysis (mine can but it really sucks) that would be helpful but my scope's FFT function, even when working well,  is a poor substitute for a genuine Spectrum Analyzer. Maybe that's why really good SAs often cost more than a house and car put together.  I wonder if anyone posting experiments here has access to a proper SA.


Mags, why is this "unflattering comparison" photo, which is nothing more than TOS violation, personal attack and childish insult, allowed to remain in view?

Synchro is now on moderation,until he stop's all the crap.


Brad

TK, Gyula,

thanks, good suggestions, i will look at it with my (not so expensive) SA and make both coils variable (capacitance).

I think i will first need to make myself an identical TBP coil so they are already closely matched, then some variable caps (i have these
2 big 45-450pF variables) would be enough to line up their resonance points taking care not to overcouple the coils.


Itsu

Quote from: TinselKoala on April 19, 2017, 12:11:56 PM
Nelson, I'm glad we agree on this basic algebra.

And now we are beginning to see where synchro has gone off the rails. He clearly doesn't get that the Inverse is not the Negative. X^-1 is equal to 1/X, not some negative value. And the H (scalar unit of induction) of the Henry is not the same as the  H (vector quantity)of the magnetizing field strength. He apparently has confused these two very different things in his mind, because of the use of the same letter for both. But the H of the field strength is a letter chosen at random by Lord Kelvin in 1850, and has nothing to do with the assignment of the name Henry and the letter H as abbreviation for the unit of inductance.

For Synchro: When letters are Bolded like that it is not done for emphasis. It is a common way to indicate that the quantity referred to is a _vector_ not a scalar. But I don't expect you to understand the difference, since the math is obviously over your head. You should however be capable of clearly understanding that the "H" of inductance is not the same thing as the "H" of magnetic field strength. Or am I giving you too much credit?

@Tinselkoala,

"A negative correlation means that there is an inverse relationship between two variables".

K is the letter from Kelvin.

Its SI derived unit is the henry (the same as the unit of inductance, although the two concepts are distinct).

I told you the negative Henry was a measure of a magnetic field, now you're trying to teach me my lesson back.

Quote from: tinman on April 20, 2017, 04:38:46 AM
Synchro is now on moderation,until he stop's all the crap.


Brad

He has just taken the insults and "vendetta" (his word) against me over to EF. He isn't going to stop.

But thanks.

Quote from: TinselKoala on April 20, 2017, 06:29:36 AM
He has just taken the insults and "vendetta" (his word) against me over to EF. He isn't going to stop.

But thanks.

I wouldnt worry to much about the Energetic  forum to much TK,as we know what that forum is all about  $$$$$$$$$$$$$$$$$$$$$$$$$$$$

I will approve synchro's posts,as long as there not direct insults toward fellow members.


Brad