Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search

Author Topic: Rene/Meissner EMF Higher Voltage Charger Variant  (Read 43492 times)

gyulasun

  • Hero Member
  • *****
  • Posts: 4117
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #60 on: May 08, 2018, 08:58:37 PM »
Hi SkyWatcher,

Returning for a little to the 100 Ohm instead of the 220:  I would think that in that circuit (Reply #53) if the
emitter resistor is reduced, then the emitter current increases, provided the 1 MOhm base resistor and the
20V boost converter input are unchanged.  So you needed to change something else to get the presently
6 mA emitter current for the 100 Ohm resistor,  I wonder.  (Just curious, of course feel free to change anything
whatever increases efficiency.)  And likely the 320 nF capacitor may need revisiting too as is the 22 kOhm
feedback resistor. For the latter you may probably use a 47 or 100 kOhm trimmer potmeter to test some values.

Gyula

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #61 on: May 09, 2018, 03:26:20 AM »
Hi gyulasun, I did not change anything, except the 220 to 100 ohm resistor that is in the emitter line.
As said, i notice the frequency has decreased and as it charges past 14 volts, the frequency increases noticeably.
So i assume, the lower frequency is causing the decrease of input and lower voltage across the 100 ohm resistor, since the on time is remaining constant, fewer pulses per second mean less input power.
Still working on the load test.
peace love light ;)

Edit: Ok, i can already see the circuit needs tweaking when using the 100 ohm resistor on emitter line, based on the recharge time so far.
So I have lowered the 22 Kohm to 10 Kohm and placed a 100 nanofarad capacitor in parallel.
also reduced the 320 nanofarad to 100 nanofarad..
Will finish the charge with this new tweaked circuit and then start the load test again.


 

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #62 on: May 12, 2018, 06:13:34 AM »
Hi all, I'm making a new test, with the same rene/aum circuit.
Using 25 volt input and just a couple minor tweaks.
This circuit when charging the 12 volt lead acid tractor battery, achieved 92.3 % load test efficiency.

Am now going to test, using 3 lithium ion cells (taken from laptop) in series as the charge battery, for a fully charged voltage of 12.6 volts.
This test is to compare the load test efficiency to lead acid results.
Will post data when i have the results.
peace love light :)


SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #63 on: May 13, 2018, 04:32:02 AM »
Hi all, i finished a charge/load test and the efficiency with the salvaged, laptop, lithium ion cells, was 99.1%.
The load used, was a 12 volt-7 watt led bulb. It used 7.1 watt hours, for the 1 hour discharge test.

I will make a couple more tests and get a better average and also take more meter measurements at closer intervals.
peace love light :)

seychelles

  • Hero Member
  • *****
  • Posts: 991
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #64 on: May 13, 2018, 06:02:18 AM »
congratulation. you are getting the result you are wanting.
next try the new graphene supper cap/ battery.

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #65 on: May 13, 2018, 06:15:51 PM »
Hi seychelles, thank you, well it is a very nice result so far, can't complain.

Are you referring to what is called, 'ultra capacitors' the ones that lasersaber used to replace his car starter battery.

I made another test cycle with the same input voltage and also checked the voltage and current at the start, middle and end of the discharge phase.
Then added those 3 values and then divided by 3 to get an average watt-hours used by the lithium ion battery pack.
Did the same with the charging phase and the efficiency came to 101.7% load test efficiency

I was getting a little better efficiency with the previous 20 volt input circuit, so i will try that next, using this lithium ion battery and see how the efficiency compares.
Am i surprised that the Coefficient of Performance is exceeding 1.0, I'm not surprised, because the collapsing coil field is recovering energy.
Your thoughts welcome.
peace love light ;) :)   


SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #66 on: May 13, 2018, 06:42:36 PM »
Hi all, here is the circuit that went over COP 1.
peace love light

gyulasun

  • Hero Member
  • *****
  • Posts: 4117
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #67 on: May 13, 2018, 10:31:58 PM »
Hi SkyWatcher,

I travelled for a few days and now am pleased to see your continued activity.
Okay on the 92.3% efficiency with the lead acid tractor battery,  Reply #61 and 62, it may have been with the 100 Ohm emitter resistor I suppose but whatever value it had the loss was surely negligible (some mW, maybe under 10 mW).

Regarding the charging of the 3 Li cells and the COP>1, this latter surely sounds unusual. You wrote it was because the collapsing field was recovering energy. I assume you mean that during the OFF time of the oscillator you add the captured energy to the normal charging current that is flowing during the ON time?
Well, okay but this was so in the case of the lead acid battery too, right? Or you meant otherwise, not as I assumed?

Anyway, my take on this so far is that very likely the charging efficiency of the Li cells can be higher than that of the lead acid type because the internal resistance of the Li cells are I think lower than the other type, so first of all the heat loss can be less, this is inherently inreasing overall efficiency.
Pulse charging Li type batteries is a not a deeply known process, at least not for me, unfortunately.

Would you mind telling the DC voltage drop across the 1.22 kOhm emitter resistor and what is the average charge current the 25V boost converter provides to the oscillator as input current?

Thanks, Gyula

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #68 on: May 14, 2018, 02:51:15 AM »
Hi gyulasun, thanks for the reply.
Yes, the same type of charging was applied to the lead acid and you are correct, the lithium-ion cells have less losses and no peukert effect losses.

The voltage drop across the 1,220 ohm resistor is 9.72 volts.
The average current is .15 A, from the boost converter.
Average voltage from booster is 24.85 volts, because it lowers to 24.8 by end and actually starts at 24.9 volts.
peace love light

seychelles

  • Hero Member
  • *****
  • Posts: 991
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #69 on: May 14, 2018, 01:52:12 PM »
YEH SKY , ULTRA CAPACITOR OR EVEN BETTER THE NEW GRAPHENE CAPACITOR..

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #70 on: May 14, 2018, 08:55:40 PM »
Hi all, Hi seychelles, thanks for the reply.
I don't have any ultracapacitors at the moment, though i will try and get some.

I made a charge/load test with the 20 volt input, changing a couple things and the efficiency as expected, is higher.

I will make 2 more charge/ discharge load tests and take the average efficiency, to be sure of the data.

I am discharging with the 7 watt - 12 volt led bulb, for one hour.

Am also charging the lithium-ion pack to 12.60 volts in all these tests.

Here is the latest 5.0 version rene/aum battery charging circuit.

Comments or questions welcome.
peace love light

seychelles

  • Hero Member
  • *****
  • Posts: 991
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #71 on: May 15, 2018, 05:31:50 AM »
HI SKY, WHAT IS THE PART NUMBER FOR YOUR BOOST CONVERTOR PLEASE..

gyulasun

  • Hero Member
  • *****
  • Posts: 4117
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #72 on: May 15, 2018, 01:02:01 PM »
Hi SkyWatcher,

Thanks for the measurements. 
To understand a little better the charge / discharge process for the Li pack, it would be good to know the start and end voltages of the Li pack.  Also, the discharge current your 7 W, 12 V LED bulb takes from the pack surely gets reduced as the pack loses charge in the load test,  this means revisiting the overal consumption if you have not considered this,  I do not know.  Maybe you occasionally monitor the discharge current too.

Gyula

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #73 on: May 16, 2018, 02:40:56 AM »
Hi seychelles, It's a 600 watt boost converter, Says on board.
DC-DC-01
QS-HD-2015-01
I can't seem to find the exact model on the net anymore, bought it from banggood.

Hi gyulasun, The end voltage under discharge was around 11.32 volt range and exactly 12.60 volts is peak charge in testing.
It's a 1 hour discharge, i check current and voltage at start, middle and end, then convert each meaurement to watts and add all 3 and then divide by 3 to get average watts used.
I do the same with the input volts and current from boost converter.

I just finished 2 more charge/discharge load tests, then added all 3 efficiency results and divided by 3 to get average efficiency.
The average efficiency of this charging circuit is 108%
peace love light

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Rene/Meissner EMF Higher Voltage Charger Variant
« Reply #74 on: May 20, 2018, 06:00:36 PM »
Hi all, have observed something odd.
I checked the total ohm resistance of my 12 strand, parallel wired, 24 awg. magnet wire coil and 2 different meters show 1.1 ohms.
I then separated the strands and each strand measured 3.5 ohms.
I then soldered all 12 strands together, to be sure they were all making good parallel contact and still the meters show 1.1 ohms.

The formula for parallel resistance claculates to around .291 ohms.
I'm not sure what is going on, anyone have any ideas, thanks.  ;)
peace love light :)