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Author Topic: Dally, Shark & Ruslan workbench  (Read 42616 times)

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UN,

My understanding is that at about 26% duty cycle, there should be around 300 to 400V DC output across a load.
Not sure what load.

At 26% duty cycle i have about 145V DC (across 100W load) which is a far cry from the 300 / 400V.

I also do not notice any effect when activating the kacher other then a slight decrease of Grenade L5 output DC voltage, so no increase in DC output voltage nor any doubling of the Grenade L5 frequency (before rectification).

The influence of the kacher onto / into the yoke as verpies mentioned earlier could very-well be the trigger for this doubling of the frequency (and increase in output voltage)

But my doubts are also still with the ground connection.
I presently have it on the kacher secondary bottom wire only, so i wonder if this will be enough to pull something from it.

Itsu
   

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Have you noticed the way this device is wound ?????????

The other thing is Dally used 75ohn coax not 50ohm.

Regards Sil
   

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Have you noticed the way this device is wound ?????????
Your screenshot depicts orthogonal circumferential windings as well as some kind of foil or paper under the red winding.
This winding arrangement is not typical for an ordinary transformer.

The foil is reminiscent of this ( marked with the red lines on the schematic ).
   
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Don't forget about the frequency doubling when the Kacher is switched on in that Alexeev's video, which was discussed here.
I am happy with your answer and link ..  I didn`t notice the frequency doubling first .. very interesting.

My understanding is that at about 26% duty cycle, there should be around 300 to 400V DC output across a load.
Not sure what load.

At 26% duty cycle i have about 145V DC (across 100W load) which is a far cry from the 300 / 400V.

I also do not notice any effect when activating the kacher other then a slight decrease of Grenade L5 output DC voltage, so no increase in DC output voltage nor any doubling of the Grenade L5 frequency (before rectification).

The influence of the kacher onto / into the yoke as verpies mentioned earlier could very-well be the trigger for this doubling of the frequency (and increase in output voltage)

But my doubts are also still with the ground connection.
I presently have it on the kacher secondary bottom wire only, so i wonder if this will be enough to pull something from it.
Useful information, i find it very inspiring Itsu that you have this steady "definiteness of purpose", steady focus on the project. That also helps me staying focused on the goal.

   

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Your screenshot depicts orthogonal circumferential windings as well as some kind of foil or paper under the red winding.
This winding arrangement is not typical for an ordinary transformer.

The foil is reminiscent of this ( marked with the red lines on the schematic ).


There are several (Russian) sources on the internet stating they have a ОС-90.38ПЦ12 yoke, but up till now i was not able to obtain one.
Some sources did not respond to my messages / Emails, others return a list of items without this yoke on it etc.

Often its not clear to me in the Russian responses what they are saying, even with Google translate.

Anyway, i will keep on trying to locate one.

Itsu
   

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UN,

This "steady focus on the project"  is mainly caused by working with verpies all these years.

He has an "eye for details" which is needed to accomplish a replication with all these unknowns.

When reading back this thread you will find countless suggestions and "details to focus on" from verpies which are not explored yet (like the doubling of frequency) and may hold the key to success.

The basic framework of the device is in place now, so now we need to go back and explore these details to find the cause of the mentioned effects which might lead to success.

Itsu
   

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UN,

My understanding is that at about 26% duty cycle, there should be around 300 to 400V DC output across a load.
Not sure what load.

At 26% duty cycle i have about 145V DC (across 100W load) which is a far cry from the 300 / 400V.

I also do not notice any effect when activating the kacher other then a slight decrease of Grenade L5 output DC voltage, so no increase in DC output voltage nor any doubling of the Grenade L5 frequency (before rectification).

The influence of the kacher onto / into the yoke as verpies mentioned earlier could very-well be the trigger for this doubling of the frequency (and increase in output voltage)

But my doubts are also still with the ground connection.
I presently have it on the kacher secondary bottom wire only, so i wonder if this will be enough to pull something from it.

Itsu
I never understood why this noisy motor I made 10 years ago was affected by my kacher. The meter was probably a malfunction but it seemed there was some coupling with the trigger coil. https://www.youtube.com/watch?v=BrjcvGR0ERk&t=29s delete if too OT.
   
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UN,
This "steady focus on the project"  is mainly caused by working with verpies all these years.
He has an "eye for details" which is needed to accomplish a replication with all these unknowns.

When reading back this thread you will find countless suggestions and "details to focus on" from verpies which are not explored yet (like the doubling of frequency) and may hold the key to success.
The basic framework of the device is in place now, so now we need to go back and explore these details to find the cause of the mentioned effects which might lead to success.

Yes I love Verpies his eye  and passion for details.
   

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I never understood why this noisy motor I made 10 years ago was affected by my kacher. The meter was probably a malfunction but it seemed there was some coupling with the trigger coil. https://www.youtube.com/watch?v=BrjcvGR0ERk&t=29s delete if too OT.

Hi Jim,

that's one scary sounding pulse motor!

So i understand that your kacher is running from the same battery as the pulse motor and the field coming of from it influences the pulse motor current / running speed.

I guess its like you said that the field influences/disturbs the trigger coil of your pulse motor, but probably only a scope shot would show this.

Interesting indeed,  thanks.

Itsu 
   

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My understanding is that at about 26% duty cycle, there should be around 300 to 400V DC output across a load.

In my experience increasing push pull duty cycle more than 25% percent do not give any increase in amplitude.
I think it is reasonable outcome, 25% means that we supply power on both 1/4 of period.
If we increase further we will be "shorting" LC tank.

-Vasik


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The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
   

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Hi Vasik,

what amplitude do you mean?

In this post:  https://www.overunityresearch.com/index.php?topic=3926.msg94582#msg94582 i show that the Grenade L5 Voltage / DC output and the Inductor L4 current still increase in amplitude after 25% duty cycle.

Itsu
   

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Hi Vasik,

what amplitude do you mean?

In this post:  https://www.overunityresearch.com/index.php?topic=3926.msg94582#msg94582 i show that the Grenade L5 Voltage / DC output and the Inductor L4 current still increase in amplitude after 25% duty cycle.

Itsu

Hi Itsu,

I mean voltage on the capacitor in series with inductor L4 (similar to current through L4). May be it is because I have 3x push pull frequency there.

It is very interesting that in your experiment MOSFETS temperature dropping after approx. 25% duty cycle, do you have some explanation for that ?

-Vasik



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The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
   

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Ok,  thanks, so you have the Inductor resonance frequency set to 3x the Push Pull frequency.

Concerning the MOSFET's temperature getting cooler after 27% Duty Cycle, i have no explanation for it, it probably will have something to do with the switching on speed and gate charge curve (Miller Plateau).

Itsu
   

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Your screenshot depicts orthogonal circumferential windings as well as some kind of foil or paper under the red winding.
This winding arrangement is not typical for an ordinary transformer.

The foil is reminiscent of this ( marked with the red lines on the schematic ).
I don't have a yoke like that one from soviet republic but i'm experimenting with this one, see pic

I'm not using 4 T output but 24 T.

12.5 khz or 25khz in

Regards Sil
« Last Edit: 2021-09-10, 03:20:03 by AlienGrey »
   

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I finally received another 24V 10A PS to be used as feedback PS.
I first got a wrong one (12V), so that caused some delays.

I hooked up the 220V / 24V @ 10A PS to the 200V DC where also the 100W bulb is on and it seems to hold its 24V well powering 2x 12V 21W automotive bulbs in series.

So in principle i am able to loop back the 24V into the input (protected by diodes) to see what happens, but i first need to get some effect from the kacher on the Grenade output like increase in voltage and/or frequency doubling etc.

At the moment i have no such effect, just a slight dimming of the DC output when activating the kacher.

Video here:  https://youtu.be/ih6ZHHkNGUg

The scope-shot in the video shows in green the Grenade L5 current and in purple the MOSFET 1 gate signal.


Itsu
   

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Itsu Have a look at this video see if it helps  https://www.youtube.com/watch?v=qdydGv2T5SU

Regards Sil
   
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    Guys:
   I must of missed the funeral...
   Or is everyone on vacation?

   Verpies:  I just saw a message that was sent from you a while back, indicating that you have access to at least one Russian yoke core, and can possibly obtain more of them, if needed. You may have a point about that particular model of Russian yoke really being what is needed, even if other shapes and types of cores will work. But, we have no verifiable proof that other cores will also work, by OUR small group of builders. As so far, that has not been the case with any other shape and style and make of ferrite core, for us.
    Vasik or Itsu can be one of the persons that would qualify for your gift. The real Russian core... As they don't have such a yoke to work with, nor do I.  I wish that Geofusion still was around, as he has everything in his set up, but that.
   It's a shame that when someone hits on it, they suddenly are never heard from again. I have promised that that will not be the case with me.

   Anyways, I just thought to put this thread back up on top, as I don't like seeing it way down at the bottom, neglected as it was.
As it's about the only thread left anywhere, where a few people are actually testing and working on something. Instead of just talking and speculating....

    NickZ
   
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