FIGUERA GENERATOR SEQUENTIAL DUAL (+/-) SOLID-STATE DRIVER DEVELOPMENT

[kampen]

@ All,

The digital Commutator seems to give only one pulse to 1 and 8 but gives a double pulse to 2,3,4,5,6,7.
It is my opinion ( limited as it is) that this will not give enough time to those pulses 1 and 8 to match the others.
I still have to CALCULATE this issue in more detail, about the resistance reduction at the end coils #1 & #8...
because I want to ALWAYS have a Total of 50 Ohms on Eight Coils at ALL TIME during the sequencing on my latest Linear Dual Pulsing (-/+):

Your observation about the digital commutator providing single pulses to coils 1 and 8, while double pulses are applied to coils 2-7,
raises an important concern about timing balance and resistance distribution across all coils.

Key Concerns:

• Pulse Timing Mismatch:
  
  • If coils 1 and 8 receive only a single pulse, they may not contribute the same force as coils 2-7, leading to uneven acceleration or gaps in movement.
  • This could disturb the smooth linear motion, introducing jerking or asymmetry in the displacement.
• Resistance Balancing Across Coils:
  
  • You want to always maintain a total of 50 Ohms across 8 coils.
  • End coils (1 & have a reduced number of pulses, so they may experience lower total resistance than coils 2-7.
  • If the resistance drops too much, current distribution will change, affecting magnetic field uniformity.

Mathematical Analysis: Pulse Timing vs. Resistance
To analyze this, we need to calculate the effective resistance in different pulse conditions.
Step 1: Resistance Per Coil
Each coil has an individual resistance of:
Rcoil=50 Ohms8=6.25 OhmsR_{\text{coil}} = \frac{50\text{ Ohms}}{8} = 6.25 \text{ Ohms}Rcoil=850 Ohms=6.25 Ohms
Step 2: Effective Resistance in Different Pulse Sequences

• If all 8 coils are active equally:

Rtotal=6.25×8=50 OhmsR_{\text{total}} = 6.25 \times 8 = 50 \text{ Ohms}Rtotal=6.25×8=50 Ohms

• If coils 1 & 8 receive only single pulses, while 2-7 receive double pulses:
  
  • The relative activation time of coils changes.
  • The end coils contribute less resistance due to lower activation.

To verify the actual resistance variations, see below effective resistance changes based on pulse sequencing.
Here the detailed calculations now.

Resistance Distribution & Effective Resistance

Coil Number	Pulse Factor	Effective Resistance (Ohms)
1	1	3.571428571428571
2	2	7.142857142857142
3	2	7.142857142857142
4	2	7.142857142857142
5	2	7.142857142857142
6	2	7.142857142857142
7	2	7.142857142857142

Calculated the effective resistance distribution for each coil based on the pulse timing.
You can review the table to see how the resistance varies due to the single vs. double pulse sequencing.

Key Observations:

• End Coils (1 & Have Lower Resistance (~3.57 Ohms)
  
  • Since coils 1 and 8 receive only one pulse, their resistance contribution is lower than expected.
  • This means they will heat up less and generate weaker magnetic force.
• Middle Coils (2-7) Have Higher Resistance (~7.14 Ohms)
  
  • These coils receive double pulses, making them stronger electromagnetically.
  • However, this also increases the overall power draw in those sections.
• Total Effective Resistance is Maintained Near 50 Ohms
  
  • If your goal was to always keep 50 Ohms, the method you are using does work in an approximate manner.
  • However, magnetic field strength is not uniform, which could impact motion smoothness.

Next Steps & Fixe
Adjust the pulse sequencing to equalize resistance across all coils while keeping the same 50 Ohm total?
We could try:

• Giving coils 1 & 8 slightly longer pulses.
• Reducing the double pulse effect on coils 2-7.
• Tweaking coil current to compensate for resistance imbalances.

Hope this will be any help.

[Ufopolitics]

Hello Dear Alex,

Yes, all your calculations and conclusions are right, BUT ONLY BECAUSE we are calculating based on analyzing "a single coil".
I did the same mistake before, then tried (in my mind) to reduce resistance on Coils # 1 & 8, and I will tell you that these resistance reductions on just 1 & 8, it WILL NOT WORK.
Simply because we will end up having all different resistances TOTAL VALUES on the EIGHT Coils, causing the Field to alternate strength due to resistance fluctuations, during travel.
We do NOT want that!!

So, after going over many times on this issue... until I realized I was making a mistake by only being concerned about TWO Coils out of Eight that ALWAYS stay ON during sequence.

First, we need to understand that the Magnetic Field is always generated by Eight Coils. No matter which sequence of coils.

Second, please let's understand the way this sequence works...according to our setup, pulsing a chain of Negative Contacts [1-8] and a Chain of Positive Contacts [1-8] at unison and following the 1 through 8 sequence.

Third, on this linear design, we have two #1 coils and two #8 coils all in a Series-Linear fashion. However, each 1 & 8 are on negative PLUS on positive coils groups.

Therefore, we only "flash" contact 1 negative and contact 1 positive together, for a fraction of time, (this includes coil 1 and coil 8 on the negative side group, plus coil 1 on positive side group) and that is when magnetic field has reached the extreme end travel, say left side (according to image above).

As also again, when field has traveled to the right extreme travel it flashes coils 1 & 8 on the positive group., plus coil 8 on negative group

However, during the "mid travel" of this virtual field are involved all coils from 2 to 7, negative and positive respectively.

As a final conclusion, that the FULL FIELD consists of the SUM of all eight coils, wherever the coil number are providing power. So, the way I see it is that if there would be a very minimal timing issue with coils #1 and #8, it will be disregarded to affect the whole field strength and spatial travel.

Finally, I will keep winding ALL Sequential Coils with the same resistance value, and that is 6.25 ohms per each coil, (I believe I have said that on the other thread)

simply because to me keeping the same exact resistance value for eight coils is the priority above anything else.

I would like to apologize here, because I am going through critical health issues with my wife...and that has required that I leave everything else on a halt.

So, Alex, if you are working on this project, please keep going the way it was originally planned, because I know it will work perfectly well.

Maybe you will have much better results with the overlapped version of driver, because of issues I have written about on page 68-69 of my main Figuera Setup.

Regards to all

Ufopolitics

[kampen]

Subject: Wishing You Strength and Moving Forward

Dear Ufopolitics,
First and foremost, I am truly sorry to hear about the critical health issues you and your wife are facing.
My thoughts are with you both during this difficult time, and I sincerely hope for the best possible outcome.
Please take all the time you need to focus on what truly matters—your family and well-being.

Regarding the project: I completely understand and appreciate your guidance.
I will continue working on it as originally planned and will take a closer look at the overlapped version of the driver as you suggested.
I'll also review pages 68-69 of your main Figuera Setup to ensure everything aligns with your insights.
Take care, and please don't worry about anything here. Your health and your wife's well-being come first.
Wishing you both strength and healing.

Best regards,
Alex