I'm not one to get prematurely excited...but can someone explain this

[Cap-Z-ro]

@ MeggerMan

"What kind of 9V battery are you using...zinc carbon, Alkaline, NiCd, NimH ?

...they are just dollar store batteries...the only descriptive they have is that they are mercury free.

"Have you tried to discharge the battery and measured the capacity down to say 7V."

...I discharged the battery on both chargers down below 7 vdc.

The transformer charger topped off at 8.26 vdc.

The motor charger is still charging slowly...now up to 7.53 vdc.

Regards...

[hartiberlin]

Your Motor charger could use the small negative resistance
between the graphite brush and the copper commutator of your
DC motor.
Then, if a local radio transmitter or mobile phone station
broadcasts enough RF power it could
get rectified between this 2 dissimular graphite-copper
contacts.
Play with the contacts in the commutator to maybe enhance the
effect.
I guess, if you put it in a Faraday cage the charging will be gone...

Regarding the charging of the battery with the transformer
and using just one pin only from the battery, well,
maybe you just push electrons into this one pin and
keep the other pin at the surrounding potential,
so there is also some kind of pumping action, that
charges up this battery ?
Do you have a scope and can test the voltage on this
battery ? Are there any spikes on it ?
Is the transformer circuit anyhow oscillating ?

Regards, Stefan.

[Cap-Z-ro]

"Your Motor charger could use the small negative resistance
between the graphite brush and the copper commutator of your
DC motor.
Then, if a local radio transmitter or mobile phone station
broadcasts enough RF power it could
get rectified between this 2 dissimular graphite-copper
contacts.
Play with the contacts in the commutator to maybe enhance the
effect."

...My knowledge and understanding of electronics is very basic Stefan...I am not sure how to 'play with the contacts in the commutator'.


"I guess, if you put it in a Faraday cage the charging will be gone..."

...I won't be able to confirm that until I reach the limit of the battery charge...possibly by tomorrow.


"Regarding the charging of the battery with the transformer
and using just one pin only from the battery, well,
maybe you just push electrons into this one pin and
keep the other pin at the surrounding potential,
so there is also some kind of pumping action, that
charges up this battery ?"

...that could very well be the case.


"Do you have a scope and can test the voltage on this
battery ? Are there any spikes on it ?"

...all I have for testing at present are 2 multimeteres.


"Is the transformer circuit anyhow oscillating ?"

...I have disassembled the transformer based unit once it leveled off at 8.26 vdc...I am now testing other configurations...possibly involving permanent magnets.

Regards...

Latest reading on the motor charger is 7.55 vdc.

[IronHead]

Hey guys
Well I have decided to try this experiment on a little  larger scale.
What you see here is a 12 volt  tractor battery that has been deep
discharged to about 6 volts  a month ago an left to site. Checking this
battery this morning at 6.25 volts,  I hooked in the 540 size dc motor
and Caps . Cap one is 4000uf - 480 volts  and Cap two is 405uf - 370 volts

The starting voltage at 6.25 volts has climbed to 7.17 in 5 hours.
This battery was a 6.25 for at least a month. Very interesting results
and still charging or climbing as it were.

Sorry that I do not have the starting voltage picture , it had some kind
of compression error and was all pixelated.
So we can start from here and see where it goes.

IronHead

[Dr.Greenthumb]

Dr.Green,
Your fan is a most likely a DC-DC motor (lots of electronics), not a standard DC motor.
Your capacitor is nothing like 22,000uF.

i didnt know there was a difference between a dc-dc motor care to explain? I know the caps arnt 22,000 uF. Its what i had at the moment.