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Overunity Machines Forum



Akula0083 30 Watt Self Running Generator.

Started by Grumage, March 06, 2014, 12:29:06 PM

Previous topic - Next topic

0 Members and 10 Guests are viewing this topic.

MenofFather

Quote from: Grumage on March 19, 2014, 06:39:32 AM
Dear All.

I spent another fruitless evening looking for anomalies, nothing to report.

If I have correctly read the schematic, the Mosfet switches in series with the transformer and the load is fed after the primary winding?? In other words current is drawn through L1 to light the LED's ?? So could this be why I am not seeing anything unusual ?? The simple reason being I am not pulling enough current through L1 to create a strong magnetic field ??

For the EE's, can I use my PWM connected as in  figure 4 from the attached PDF ??   To create the condition I have explained above ??

Thought or comments gratefully received.

Cheers Grum.
Do like in this picture and you, I think, have bigest chance to make this divice). This schematic is from author.
He say, that first wound primary coil of 15 turns, turn to turn wound, then piesce of paper and wound secondary coil 45 turns, also turn to turn. Coils wound like show in schematic in oposite directions.
Also not wery clearly say, but something like this, that after primary coil is short turn of ecran (one turn of tape of specific metal, maybe cuper is good) and after secondary coil is short turn of ecran. So wound primary, then tape of paper, then ecran short, then secondary, then ecran short. Load 5-20 W LED 12 V.

From other Planet

@Grumage, MenofFather and others: Keep up the good work, we will get there somewhen, im sure. I cant help much here atm, as im still busy with 2-3 other devices and wanted to wait for RMcybernetics PCB before i start.
Men of Father, well good luck!!!!! But u sure that schematic came directly from akula? If u shouldnt be succesful like this, maybe u can try again with a ground(minus) connection on the other side of R20. If u are in contact with akula, maybe u can ask him about this connection too?
Also try to confirm the schematic he sends u is really the one u received, perhaps he can have a quick look here.

All the best and kind regards!

MenofFather

"In other words current is drawn through L1 to light the LED's ??"
Yes. Driving LED back EMF of L1 seams.

MenofFather

Quote from: From other Planet on March 19, 2014, 10:48:42 AM
@Grumage, MenofFather and others: Keep up the good work, we will get there somewhen, im sure. I cant help much here atm, as im still busy with 2-3 other devices and wanted to wait for RMcybernetics PCB before i start.
Men of Father, well good luck!!!!! But u sure that schematic came directly from akula? If u shouldnt be succesful like this, maybe u can try again with a ground(minus) connection on the other side of R20. If u are in contact with akula, maybe u can ask him about this connection too?
Also try to confirm the schematic he sends u is really the one u received, perhaps he can have a quick look here.

All the best and kind regards!
NO. Schematic not from akula, but from man, who make this free energy divice. Akula not answering to questions, he only to one my question answer. And help me only, then I work on it one divice...

lost_bro

Quote from: Grumage on March 19, 2014, 06:39:32 AM
Dear All.

I spent another fruitless evening looking for anomalies, nothing to report.

If I have correctly read the schematic, the Mosfet switches in series with the transformer and the load is fed after the primary winding?? In other words current is drawn through L1 to light the LED's ?? So could this be why I am not seeing anything unusual ?? The simple reason being I am not pulling enough current through L1 to create a strong magnetic field ??

For the EE's, can I use my PWM connected as in  figure 4 from the attached PDF ??   To create the condition I have explained above ??

Thought or comments gratefully received.

Cheers Grum.

Good day Grum:

Basically when designing and SMPS one must take into consideration Switching Frequency, operating Flux Density, resulting core loss and desired operating temperature.  Also depending on the topology of the device, full bridge, push-pull, forward, buck , boost, cuk, sepic, etc; you must know before hand which quadrant(s) of the B/H curve you plan to operate within. ..

Without sounding like a broken record repeating the Zen interelatedness of the various factors which are all critically related,  I want to mention just a few facts that affect the design of the SMPS XFMR.  I think this is useful for review considering that the design of SMPS XFRMRs is just as much an art as it is a science.

It is without doubt the most difficult piece of an SMPS to be designed.....

DC conduction losses and AC switching losses:


Transformer losses can be divided into:
1:  core loss — the energy used in magnetizing the core, and:
2:  conduction loss associated with passing current through the windings of the transformer (I2R losses).   Meaning that wire size, path length and winding density all have a role to play.

The inductor core loss is an AC loss that is a function of switching frequency. Core losses are due mainly to magnetic hysteresis loss, which can be imagined as the friction generated as the Magnetic field induced by the inductor snaps past the crystalline lattice of the inductor matrix (material composing the inductor).   In a high frequency SMPS, the core material may be powdered iron or ferrite. In general, powdered iron cores saturate softly but have high core loss, while ferrite material saturates more sharply but has less core loss.

Unfortunately, you also have to deal with Conduction and Switching losses generated by the Switch (MOSFET) also:

When you double the switching frequency in a design, you halve your flux density for a given number of turns in the transformer.

So:

Smaller cores can more easily tolerate a higher peak flux density at higher switching frequencies than larger cores. Why? Because core loss is proportional to volume but cooling is proportional to the core's radiating surface area.

I have seen more than one Russian designed 'eternal light device' that the developer has complained of 'MOSFET overheating problems'.

Please see link from Wesley;        http://www.youtube.com/watch?v=eUxFuW3JYdY

Anyhow, I see a trend here on these devices in general:   There is some type of anomaly involving the functioning of the transformer to invoke an excess of energy production:  This directly affects the functioning of the MOSFETs, maybe throwing them into Avalanche mode or at any rate affecting the switching behavior as to illicit an overheating condition.

I have attached more detailed information on SMPS core selection and magnetic information FYI.

Well, I wish you the best of luck with this.

take care, peace
lost_bro