Ok, this one has me stumped. I can see what he's doing. He's using the emf from a second winding on the power coil to charge the battery that is powering the motor, and he is ALSO charging a crap battery, he says with the back emf of the reed switch. The reed switch?
But, he has the system running, showing the voltages on both batteries, no problem there. Then he dicsonnects the power to the motor, so it stops, and the voltages BOTH go down.
The batteries BOTH have higher voltage when the motor is running, than when the motor is not running. Usually, battery voltage goes UP when you turn off a motor, NOT down.
My guess is he disconnected the wrong wire, and the motor is really still connected, drawing the battery down. Pretty well done though. This guy is really trying to make this work.
http://www.youtube.com/watch?v=OEHLT0ILnhY (http://www.youtube.com/watch?v=OEHLT0ILnhY)
what do you guys think?
@DA,
I?ve been there?
Most probably it?s his DMMs that are getting disoriented by the back emf at several kHz.
Check also http://www.youtube.com/watch?v=WldMxxFcE2g
DMM supposition is supported by the above movie, which shows the effect much clearer and which incidentally happens to be among the most recent videos.
Based on the observation that only in the last movie resonance is observed, I?d said the guy has a lot of work ahead. ;)
But otherwise he seems very honest nonetheless and pretty determined to nail it down.
The motor is known as Bedini?s, although almost pc fan is working on the same control circuit (Hall sensor instead of Reed switch but otherwise they are pretty much equivalent).
Maybe it?s a good idea to invite kubicop here. Go for it, if interested.
As far as I know many members already had their hand-on experience with this kind of setups and most found there is no energy gain in back emf but probably there are other members who would like to give it a try.
Cheers,
Tinu
I hadn't thought the DMM aspect, I agree that is most likely.
I mainly thought it odd that he was charging a battery from the reed switch circuit, which is used to power the transistor, not the coil. So that would be just draining the 12 volt battery?
Looks pretty good, if those meters aren't confused. Does this happen often?
I saw that resonance video. I see what you mean.
DA
Quote from: DA on January 26, 2008, 07:54:54 PM
I mainly thought it odd that he was charging a battery from the reed switch circuit, which is used to power the transistor, not the coil. So that would be just draining the 12 volt battery?
Looks pretty good, if those meters aren't confused. Does this happen often?
DA
@DA
This sort of "apparant" charging is very common in pulsed circuits. Especially so, when the circuit utilizes a mechanical switch. Granted it seems very unusual when the output is taken from the reed switch, and even more unusual when the reed switch is only used to drive the base of a transistor.
The problem is the use of DMM's in conjunction with mechanical switching. The switch causes sparking, which in turn produces RF emissions. Initially you might think that the battery should suppress this RF, until you realize that the capacitance of the battery in series with the inductance of the coil forms a series resonant antennae circuit which is highly reactive to RF emissions of the mechanical (in this case a reed) switch, and instead of suppressing the effects of RF, actually enhances it.
Many years ago when I built my first Adams motor using mechanical switching, I was enthralled at the apparent immediate gain in voltage of the supply battery. However, as I allowed the motor to run continuously, the voltage eventually began to drop below the initial start voltage. Bemused by this, I switched to precision analogue meters which showed the true battery voltage levels, both when running the motor and when switching it off. Needless to say, I was disappointed by the true voltage readings.
Cheers from the Toad Who Hops :)
Thanks, that makes sense.
Jes the DMM make problems if not sinuodial AC or not proper DC.
But the voltages aon Battrie is same if you look with Ananlog or digital
Volt-meter !
the batteries have the same function as big condensors ,
so the voltages are NOT overlayed with RF or pulsed voltages.
Bu be shure you can use parallel to the Batteries aditionally RF blocking
cindensors. 1000pf + 0.1 mf ( MKT or ceramics.
-----------------
Other Motor found an yourtube now;
http://www.youtube.com/watch?v=ArX7BDY1XRM&feature=related pulse motor 225hp
Pese
Quote from: pese on January 27, 2008, 04:53:34 AM
the batteries have the same function as big condensors ,
so the voltages are NOT overlayed with RF or pulsed voltages.
Pese
@Pese
We'll have to agree to disagree on the finer points of RF in battery circuits. For a vivid example of RF being conveyed by the battery itself,
check out this link at you-tube : http://www.youtube.com/watch?v=t45OyvaAc-0.
Here is a quote of the written text associated with the video : "Circuit is powered by eight AA batteries. Terminal voltage is 11 volts. Current is 110ma. AV plug is grounded to the house wiring (screw on wall outlet plate).
The tubes are both touching the battery pack, no electrical connection. The circuit is a modified version of the Thomas drive circuit outlined on the website Dr Stiffler.com More info at this link"
The circuit used in the video is a variation of DR Stifflers circuits found in http://www.overunity.com/index.php/topic,3457.0/topicseen.html
Cheers from the Toad who Hops :)
Jes , but the Stiffler is another Device ,
i have only -tried- to learn ala a little bit for the problem to read voltage with digital Volt and Amp Meters if pulses and RF will "disturbe" the Values on Meter.
Analog Meters are mor accurate , DMM can be used , if Condensor between + and - directly
connected on meter , will stop any RF and equilize also fast changing DC voltages.
The Stiffler Invention is have not followed. The Schema isnt in the link !
8 Batteries (1,5V) mus be 12 volt (new batteries 12,9 Volts.
chargeable 1,2Volt AA have only 9,6 volts.
What is used to have 11 volts?
(Week 1,5V bateries?)
Can you find out , it work on Zinc-carbon ore alkaline ?
can it work at the both battery types.
The 110mA are they correct, (IF RF is in the paly, and DC voltage AND Meter is not
"blocked" via condensors against RF, you can belive values on meter.
jes its possibel to light up "neon"-lamps via rf (sikes) with RF power, i "find "this
40 years ago out in groep of radio amateurs.also following life in my profession.
But never comes more out than was the (real= input.
Pese
Ive had different DMM readings by simply placing my hand next to the meter. I doubt their accuracy with anything of a pulsed nature now.... :( :D
Hi all
I would have like a link sent to me about this.......
I guess I found it on my own though, I wonder what else is out there.
When I get a chance I will hook up my circuit this way again with my Oscilloscope because you can only ever know by doing not by posting.
I will youtube the results..
Please send me a link or invite me to forums about me.
Thanks
Paul.