The Ossie motor

[Jimboot]

D Cell has dropped to 1.21 overnight. 59hours still at 300RPM

[woopy]

@ Gyula

yes you are right that Ossie wanted to stay in the ORBO DEMO... but as i follow this thread too , i am happy to transfer our experience here as it seems to became  a gigantic war against what i think we are seeking
here.

Perhaps what is a problem in the OU is that every particpant want to be reconised as THE ONE who had the idea FIRST. But as we are all in a really unusual quest we have to not only accept the other idea but store them in our brain-withdraw,  because perhaps in one day or perhaps one year, combined with another idea this can make a 1+1=4 synergy. OK stop for philosopfy and go back to what is really interesting

Today  at 13.00  the Ossmot running at 257rpm with the battery of the previous experience at 4.55 volt (just to remind you ,that battery already run the same motor more than 30 hours)

back home at 20.30  battery 4.52 volts  but rpm increased to 263     and at 22.00 battery down to 4.51 volt  and rpm always at 263 

so my questions are

1 -  is it possible that the scope probe energises the motor  or eventually take out any energy ? 

2-    how is it possible that the RPM increases and the voltage in the battery decreases    if it is not a temperaturew of battery or anything else??

3- Does a multimeter add or diminish the voltage when measuring ??

Now i put a Resistor (1 ohm) at the entry  between the Battery + and the circuit . And i put the scope probe across the resistor   and on the scope picture  at 5 volt div     it is FLAT

and the same config at 20 mv (milivolts )  div , it shows very small current movement in and out of the battery  but only one way  and very very small  !! ??   

Does it mean that no current goes bak to battery  ? but in this case the battery goes down       but the rpm not           bad night for me in prevision !!!


To Ossie


if you accept please aggree to come with us, i think we can do something great together.

This thread is already followed by a lot of people all around the world   and JLN has already made a version 1.3 of the Ossie motor with integration of Futuristic fullwave bridge idea.

hope that this morning i will receive my schottkys  hehe


@ Mag

good idea , i can't prevent me to to make an  test of a wrapped ring magnet, I made l 7.2 volt direct impuls on the 38 turns 4mm copper wrapped  neo magnet. The results = small mouvment (but it works) and strong finger burning  ouuuille !! but anyway interesting.

good luck at all

Laurent
'

[gyulasun]

....snip
Today  at 13.00  the Ossmot running at 257rpm with the battery of the previous experience at 4.55 volt (just to remind you ,that battery already run the same motor more than 30 hours)

back home at 20.30  battery 4.52 volts  but rpm increased to 263     and at 22.00 battery down to 4.51 volt  and rpm always at 263 

so my questions are

1 -  is it possible that the scope probe energises the motor  or eventually take out any energy ? 

2-    how is it possible that the RPM A and the voltage in the battery decreases    if it is not a temperaturew of battery or anything else??

3- Does a multimeter add or diminish the voltage when measuring ??

Now i put a Resistor (1 ohm) at the entry  between the Battery + and the circuit . And i put the scope probe across the resistor   and on the scope picture  at 5 volt div     it is FLAT

and the same config at 20 mv (milivolts )  div , it shows very small current movement in and out of the battery  but only one way  and very very small  !! ??   

Does it mean that no current goes bak to battery  ? but in this case the battery goes down       but the rpm not           bad night for me in prevision !!!
....snip

Hi Laurent,

Re on your questions
1) While it is best to disconnect probes and meters from the circuit being tested on the long run, normally a scope probe involves a 10MegaOhm resistive load paralleled with a 15-20 picoFarad capacitance---a very negligible load on most of the circuits. In rare cases maybe the very sharp nanosecond pulses (if such are produced by the circuit) can get attenuated by the mentioned capacitance. Also, in rare cases the ground clip of the probe may bring capacitive current from the mains voltage the scope is operated from, via its power supply, in spite of even well designed scopes. So the answer is yes for both in extreme cases: a probe may take out or energize the circuit under test,  but I have to repeat: do not let the probe connected to the circuit on the long run. In cases when this mains capacitive feed-through is a suspect, it is good to try to run the scope from a DC/AC inverter that creates the mains voltage for the scope from a higher capacity battery, or use a scope that can be run from a battery.

2) I can only guess one possibility: due to the (even though low) back pulses to the battery chemical processes take place inside the battery and this is nonlinear process.

3) Again, the inner resistance is around 10 MegaOhm but the parallel shunting capacitance maybe higher than for a probe so this capacitance may have bigger affect on the pulse type waveforms, may diminish real values. Rarely the longer measuring wire tips may pick up induced voltages either from the circuit itself or from the nearby other appliances or from the mains, but the affect normally is small.

You may wish to use a 10 or 100 Ohm measuring resistance instead of the 1 Ohm, to inrease current measure sensitivity and may see more coming back.

rgds, Gyula

[Jimboot]

@laurent My motor displays similar characteristics. It went from 1.20 up to 1.23 but no deviation from 300> RPMS.
I also hope Ossie contributes here. I have no such delusions of thinking "I thought of that 1st" Some pix of my motor that has now being running 61.5 hours on the d cell. You'll notice I don't have the coils square. I find it runs faster in this configuration. On a 6V it has run at speeds of around 800-1000 RPM for 22 hours.

[Light]

Have tried Ossie but with two coils only.
Seems ok, running for long time; maybe with 4 coils it gets better…
http://www.youtube.com/watch?v=6EZKxu5qTJI