The Ossie motor

[futuristic]

Hi.

I'm keeping my fingers crossed that voltage will actually go up, but your current voltagedata shows what is normal NiMh discharge curve.
See here: http://www.stefanv.com/electronics/using_nimh.html

[Magluvin]

Here is where I got my info on recharging alkaline batteries. You wont find this info from a battery company.
http://www.youtube.com/user/MattBlytheTheOne#p/u/40/UDwMxISYojM

In the graph above by Futuristic you can see why the rechargeable will seem to remain steady for such a long period.
And the hump in the middle also shows why a voltage rise over time will occur. Tricky on the mind.

I am going to run a pulse motor on an alkaline starting tonight. I will put up a vid and see what she will do.

Mags

[Jimboot]

Thought I would go ahead and post the data I have so far on my Ossie run.  As a reminder, I am using 1 1.2v 2000mah nimh battery to run it.  The battery started fully charged at 1.354 volts.

The data is pretty interesting indeed.  You can see how the voltage dropped faster in the beginning, but it seems to be leveling off now.  It would seem that it is possibly that the battery being full charged, was just not able to effectively hold as much of the recovery energy.  As the battery goes down in voltage, it would appear that the battery is catching the recovery energy much more effectively.  Hopefully it will turn a corner in the next couple hours and hit the sweet spot where it does not lose energy anymore.

Hey CP congrats mate. My orzy had dropped .002 over 3 hours. I'm stopping it now as I want to check my toroids. Want make sure they dont rattle
@Mags thanks for the battery data. It makes sense to me now. I found it hard to even reach the same RPMs as  with recharbles. My SLA's got the motor running when charged up but at half their charge, say 3V they wouldn't even spin the rotor.

[gyulasun]

@ Gyula I was confused about the SAM Motor as he claimed it was a self runner. Surely if it needs batteries it is not a self runner? If you can have a self runner with batteries how long does it have to run before you call it a self runner. I'm just a bit confused about definitions. Will setup some scope shots tonight.

Hi Jimboot,

I think the reason Skycollection states his motor a self runner is that during 24 hours his battery voltage remained on the same voltage level he started to run it.  (around 5.14V)

This may mean that his motor should run from a supercapacitor bank charged up initially to around 5.1 - 5.2V from a source then start running the same motor for 24 hours (if it is able to). 

Question is how much the chemical processes inside the batteries contribute to maintain the voltage on same level, thinking on the regained pulse current via the diodes, in most of the cases charging batteries with pulsed current induces chemical proccesses that normally do not start for a regular charger. This is what I think.  John Bedini calls his chargers as 'radiant energy' chargers (while he uses the same pulse that comes from a flux collapse) and states the 'overunity' is in the batteries charged that way.

It would be good to know how many mA his motor consumes. Also, I wonder what is the forward voltage drop on his so called high speed diodes i.e. type of his diodes. High switching speed is one requirement but the 1N4148 or 1N914 type diode with their excellent 4 nanosecond reverse recovery time do "eat up" 0.7-0.8V from the regained pulse amplitude, while there are other types that while a bit slower (20-30 ns) but have a 0.3-0.4V forward voltage drop only and this may also count on the long run.

All in all, I still think if he could run the motor on supercaps, and the voltage level would not start decrease on the long run, then he would really have a self runner. With supercaps the chemical 'help' inside the batteries could be ruled out. 

With my above views, by no means wish I reduce his or others excellent achievements in this pulse motor field.

rgds, Gyula

[Jimboot]

Thaks @Gyula. Just trying to get my head around the definitions and learn. Don't worry I'm not offended. I've found the capacitor behave completely differently. It is too "rigid". I had mine running for 11 mins on one but the voltage steadily drops no matter how much I try to tune. Just as all batteries seem to have different characteristics, my mind boggles at what I will have to do to get this thing to run on a capacitor. I think charging another battery is much more likely. Thanks for the excellent explanation on the diodes as well I'm learning heaps. I just built a schottky bridge rectifier ( I think ) between my 2 motors, both doing over 300RPM off my D cell. Voltage at 1.202 Think I'll let it run overnight.