Ghazanfar Ali Generator - Utlilizing trapped energy

[Mannix]

Ok, many tests and adjusting the sim to my actual component vales an I find that, as expected the circuit operation totally relies on supplying some current to the float cap.

It seem to be a normal buck boost converter at this stage.
I am using a powersupply 2" torroid of 1300uh and 4mfd .

lots of heat and 1khz noise in the torroid

I think that the simulation does not account for the wire resistance at all ..as there are heavy pulse currents , wire resistance play a huge part ..The resistance of a wire carrying current increases with itself .. Perhaps this has been solved by Ali?

Ali, I would be happy to have some building tips .But  does seem to be a sim error so far
Confirmation of your build would be helpful as I have not  cleared the bench at this atage .

Just getting the circuit to self run from the dds generator would be amazing but losses within the torroid and wire prevent this as far as i can tell .

All, if you look at the current meters on the sim  even with no load you see many amps ..this is torroid current and seems unaviodable ..along with the Losses

I hope this takes  a different turn with some help from Ali'

Thanks in advance

[broli]

Ok, many tests and adjusting the sim to my actual component vales an I find that, as expected the circuit operation totally relies on supplying some current to the float cap.

It seem to be a normal buck boost converter at this stage.
I am using a powersupply 2" torroid of 1300uh and 4mfd .

lots of heat and 1khz noise in the torroid

I think that the simulation does not account for the wire resistance at all ..as there are heavy pulse currents , wire resistance play a huge part ..The resistance of a wire carrying current increases with itself .. Perhaps this has been solved by Ali?

Ali, I would be happy to have some building tips .But  does seem to be a sim error so far
Confirmation of your build would be helpful as I have not  cleared the bench at this atage .

Just getting the circuit to self run from the dds generator would be amazing but losses within the torroid and wire prevent this as far as i can tell .

All, if you look at the current meters on the sim  even with no load you see many amps ..this is torroid current and seems unaviodable ..along with the Losses

I hope this takes  a different turn with some help from Ali'

Thanks in advance

I would go for a wire gauge that can handle at least 15+ amps, especially on your toroid. If the wire is too thick to be wound on one toroid more of them can be used in parallel. Which is in line with what Ali claimed to use SWG 18 or ~AWG 16.

[27Bubba]

@ Mannix
"I am using a powersupply 2" torroid of 1300uh and 4mfd ."

Correct me if I'm wrong understanding this, is it the coil value supposed to be 337uH?



Thank you guys for addressing my questions. Somebody must keep me straight!



@ e2matrix

"The two connection points on the left of the diagram are where you would hook up a signal generator or square wave signal input of some sort."


So.. If I understand this correctly, in order for it to start/work signal generator must be used?

Thanks

[dutchy1966]

Ok, many tests and adjusting the sim to my actual component vales an I find that, as expected the circuit operation totally relies on supplying some current to the float cap.

It seem to be a normal buck boost converter at this stage.
I am using a powersupply 2" torroid of 1300uh and 4mfd .

lots of heat and 1khz noise in the torroid

I think that the simulation does not account for the wire resistance at all ..as there are heavy pulse currents , wire resistance play a huge part ..The resistance of a wire carrying current increases with itself .. Perhaps this has been solved by Ali?

Ali, I would be happy to have some building tips .But  does seem to be a sim error so far
Confirmation of your build would be helpful as I have not  cleared the bench at this atage .

Just getting the circuit to self run from the dds generator would be amazing but losses within the torroid and wire prevent this as far as i can tell .

All, if you look at the current meters on the sim  even with no load you see many amps ..this is torroid current and seems unaviodable ..along with the Losses

I hope this takes  a different turn with some help from Ali'

Thanks in advance

Hi Mannix,
I'm not entirely clear on what you are reporting. You are saying the toroid coil is 1300 uH and a 4 mFd cap. Is this the setup of your tank circuit?
If so at what frequency are you driving it?
Have you precharged the capacitor? Is it running properly without any load?
I remember Ali saying he was using swg18 (1.2 mm) wire to handle the large current swings.
From this link I get that it is advisable to drive the core close to saturation: http://www.rexresearch.com/szili/szili.htm
Maybe you already thought of all of this otherwiae i hope it helps you (us) one way or the other.
Thanx for actual testing keeping us informed.


Regards Dutchy

[broli]

Hi Mannix,
I'm not entirely clear on what you are reporting. You are saying the toroid coil is 1300 uH and a 4 mFd cap. Is this the setup of your tank circuit?
If so at what frequency are you driving it?
Have you precharged the capacitor? Is it running properly without any load?
I remember Ali saying he was using swg18 (1.2 mm) wire to handle the large current swings.
From this link I get that it is advisable to drive the core close to saturation: http://www.rexresearch.com/szili/szili.htm
Maybe you already thought of all of this otherwiae i hope it helps you (us) one way or the other.
Thanx for actual testing keeping us informed.


Regards Dutchy

mFd is another notation for micro farad (uF) not to be confused with milli Farad (mF). Those values indicate his tank's resonance frequency to be around 2.2kHz. So the clock frequency of 1kHz should be appropriate.