Agentgates´s TPU setup with strange wavehill hump

[broli]

Thanks agentgates,
it's much clearer now.
You mention driving the coils with 50% duty cycle, so with 3-phases that will have the effect of sometimes having two phases simultaneously ON, because of the overlapping. See attached drawing.  Is this what you planned ?
If instead we were to pulse with 33% duty cycle, there would always be only one phase ON at a time...

By the way, why don't you use cyanoacrylate glue for your coils, it's instant ! 

Altair

You are correct, with 50% there will always be a moment where 2 or 3 pulses overlap. This is a bit the arduino dilemma. In milliseconds mode the minimum frequency is 250Hz. So on and off time of 2ms. So that's the highest frequency you can get using the milliseconds in arduino.

[agentgates]

Tony while working on the software I was asking myself. If you use a pulse of 1ms on and 1ms off then you cannot have overlapping phases. The best you can get is having to start the next phase when the previous phase hits low, this would be a delay of half a period. Arduino does support microsecond (accuracy of 4µs) delays but is that high frequency really needed?

I don't know broli. Presently I am writing a new code for my pattern generator that has 12 channels and 500MHz internal clock. It makes me allow to make very accurate phase delays and duty cycles on each channel. In the meantime gluing the new coil and perhaps I will finish with them in the same time.

When I have accurate parameters with the 3 phase version I will make another update.

[teslaalset]

Glueing....I would use hot glue, cheap and fast.

[plengo]

Could someone, please, post or repost what is the correct picture for the cylinder with the coils on and which coil is the primary and the secondary? Which angle is the correct angle and how many turns for each.

I want to replicate the coil and try all the science that a monkey can find.

Fausto.

[Magluvin]

I can sorta understand the 3 phase jig. But within completion of 3 phase pulses, 4 times the energy is being used, actually if 2 are on at any time, as in all the time 2, then the input is 4 times what a single phase would consume.  So it is consuming 4 times the energy of pulsing 1 primary on/off, due to any 2 primaries are on at any time.

Thats just an analysis from what I gather. So all you single primary guys, rip it apart. 3 is the word.  Why did we build those?  hmmm   Im trying to have faith. But as Glenn Beck says  "Questions with boldness".

Magluvin 0 7