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: GENERATOR- YOU DO THE IN/OUT POWER MATH  (Read 72278 times)

magnetman12003

  • Hero Member
  • *****
  • Posts: 854
GENERATOR- YOU DO THE IN/OUT POWER MATH
« on: April 19, 2010, 03:16:15 PM »
This You Tube video shows and tells all.

http://www.youtube.com/watch?v=dj388d43Ufo&feature=channel

happyfunball

  • Sr. Member
  • ****
  • Posts: 405
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #1 on: April 19, 2010, 03:23:35 PM »
What are your calculations

gyulasun

  • Hero Member
  • *****
  • Posts: 4117
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #2 on: April 19, 2010, 04:26:55 PM »
This you tube video shows and tells all.

http://www.youtube.com/watch?v=dj388d43Ufo&feature=channel

Hi Tom,

Would you mind placing a 47 or 56 or even a 100 kiloOhm (choose one from your box, a potmeter is also ok) normal resistor in series with your bulb and see if the measured current goes down proportionally, measured with the same clamp-on current meter? 

Otherwise, I am afraid the revolving magnet fools the current measuring head of your meter.  It starts from about 41mA and goes down to 27mA. 
Normally a neon bulb like you use takes between 0.4 to 2mA current when the voltage level reaches the so-called break down voltage across its legs.
There are special types that take up between 5-10mA current when they reach their breakdown voltage

Because you do not use a series resistor with your neon bulb the only current limiting factor in your output circuit is the coil's inner reactance which consists of the DC resistance of the coil and its AC inductive reactance.  Would you check the DC resistance of the coil with a digital Ohm meter? 

Here is a link on neon bulbs of some types, it includes recommanded series resistor values too: http://www.plusopto.co.uk/pdfs/incanlamps%20pdfs/Neon1.pdf 

I hope this helps clarify if I am wrong on your clamp  meter flux pick-up from the revolving magnet.

One more notice: a neon bulb do not take up any current under its break down voltage,  works just like a Zener diode. This means that feeding it with AC voltage, current can only flow whenever the positive or negative peak voltages exceed that breakdown voltage (55-90V, type dependent), under those values the neon bulb behaves as if it were not there as a load at all... 

rgds,  Gyula

Low-Q

  • Hero Member
  • *****
  • Posts: 2847
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #3 on: April 19, 2010, 05:31:35 PM »
The rotating magnet is inducing a magnetic field in the AC-meter which fools the readings. Use a long wire so you can measure the AC-current from a greater distance. Then you'll see that lamp doesn't pull that amount of current (If so, these lamps should be banned ;D).
A magnetic field around a single wire, even at high AC-current, is nothing compared to a spinning magnetic field from a big block of a rotating neodym magnet.

Vidar

magnetman12003

  • Hero Member
  • *****
  • Posts: 854
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #4 on: April 19, 2010, 05:36:35 PM »
You might be right about all of that. I am currently constructing a minature full wave bridge rectifier.
I will dump all the AC output into it. Sure there will be some power loss but it then becomes very easy to compare input to output power as both are now DC.  Hi frequency AC is tricky to measure correctly.

mscoffman

  • Hero Member
  • *****
  • Posts: 1377
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #5 on: April 19, 2010, 10:54:01 PM »
You might be right about all of that. I am currently constructing a minature full wave bridge rectifier.
I will dump all the AC output into it. Sure there will be some power loss but it then becomes very easy to compare input to output power as both are now DC.  Hi frequency AC is tricky to measure correctly.

@magnetman

I want to commend you for doing the logically correct thing. For small
devices >400Watts it makes sense to make power measurements
at 12Vdc or there abouts because the current is higher and it's
easy to filter the signal so that the time constant of the filter is
longer than the gating time of the instrument(s). Accurately
measuring the power of an AC signal with instrumentation is almost
the definition of an impossibility. I don't care who or what is doing it
- I don't trust it.

If you want to give yourself some more accuracy build a rectifier
bridge from four Schottky or Germanium diodes capable of handling
the current.

If you downconvert to twelve volts DC you can use an automobile
lighter inverter to step it back up to utility AC voltage. With certain
conversion inefficiencies.

You can also use variac AC variable auto-transformers to "split" the AC
power so you can use it like a CVT continuously variable transmission
for electricity. Within limits you can adjust a paths power by setting
the AC voltage. Assuming you don't have switching power supplies.

:S:MarkSCoffman

e2matrix

  • Hero Member
  • *****
  • Posts: 1956
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #6 on: April 19, 2010, 11:15:21 PM »
Hi magnetman,  Nice work.  I caught your more recent vids too I believe.  I just ordered some of the transistors and diodes from the Davro/Bedini circuit you sent.  My biggest holdup will probably be winding a coil.  What have you found as a good source of magnets? 
Cheers

DeepCut

  • Hero Member
  • *****
  • Posts: 640
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #7 on: April 20, 2010, 01:16:08 AM »
Hi Tom it's me, Gary :)

I have been following in Tom's footsteps with this one, albeit a much rougher version.

Details :

Pickup coil is 600 turns (818 feet) of SWG #30 (0.254mm) magnet wire, resistance at 84.6 Ohms.

Magnet is Neodymium 20 dia x 20mm long with 6mm hole, approx. 6,100 Gauss.

Axel is 6mm carbon rod.

The drive coil/circuitry is Bedini w/o the charging battery component.

It doesn't need a Bedini circuit, a pulse generator would accomplish the same thing.

I am inputting 9VDC @ 0.07A.

I am rectifying the output, full-wave, and getting 36VDC.

The meter is reading no DC current !?

I put a filament bulb (12V, 0.08A, 0.96W) as a load and it lights but is flickery.

My meter leads are long, especially with extra clips attached, and they go up to 4 feet away.

Can anyone tell me why the DC current reading is zero ?


Gary.





Bruce_TPU

  • TPU-Elite
  • Hero Member
  • *******
  • Posts: 1437
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #8 on: April 20, 2010, 01:38:39 AM »
You might be right about all of that. I am currently constructing a minature full wave bridge rectifier.
I will dump all the AC output into it. Sure there will be some power loss but it then becomes very easy to compare input to output power as both are now DC.  Hi frequency AC is tricky to measure correctly.

Hi Tom,

Great job so far with your experiments.  What you have written is exactly correct.  Rectify it using one of the two types of diodes that Mark wrote of.  They are for high speed switching and should work just fine.  AC measuring against DC has fooled many a well meaning soul. 

I also wrote in your other thread, a means to DOUBLE your output, but have not heard back from you.  You may want to look at that down the road.

Wishing you accurate success,

Bruce

DeepCut

  • Hero Member
  • *****
  • Posts: 640
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #9 on: April 20, 2010, 01:43:53 AM »
DELETED , figured it, doh !
« Last Edit: April 20, 2010, 02:19:13 AM by DeepCut »

magnetman12003

  • Hero Member
  • *****
  • Posts: 854
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #10 on: April 20, 2010, 06:32:26 AM »
[A author=e2matrix link=topic=9076.msg238246#msg238246 date=1271711721]
Hi magnetman,  Nice work.  I caught your more recent vids too I believe.  I just ordered some of the transistors and diodes from the Davro/Bedini circuit you sent.  My biggest holdup will probably be winding a coil.  What have you found as a good source of magnets? 
Cheers
[/quote]

Here is the link where you canbuy a 1,1.5, or 2 inch diametric ring magnet

http://www.kjmagnetics.com/proddetail.asp?prod=RX84X8DIA

Tom

onthecuttingedge2005

  • Hero Member
  • *****
  • Posts: 1336
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #11 on: April 20, 2010, 06:58:12 AM »
trying to break the laws again? should I say the laws of physics. it's a law!

oh that's right, rebels can break all the laws because they are not subject to them. you make me laugh so hard! obey the law! these laws can not be broken.

DeepCut

  • Hero Member
  • *****
  • Posts: 640
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #12 on: April 20, 2010, 10:37:33 AM »
Yes cutting, and the world is flat and the sun revolves around it ...

Rapadura

  • Sr. Member
  • ****
  • Posts: 357
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #13 on: April 20, 2010, 01:25:35 PM »
Yes cutting, and the world is flat and the sun revolves around it ...

And a heavier than the air device can't fly (as they tought in the XIX Century)... Wow, Santos Sumont was really a rebel...

If E=MC², what happens to so called "conservation of energy"? Becomes conservation of "mass-energy"... Good trick...

DeepCut

  • Hero Member
  • *****
  • Posts: 640
Re: GENERATOR- YOU DO THE IN/OUT POWER MATH
« Reply #14 on: April 20, 2010, 03:19:04 PM »
Hi.

I put a new fuse in my analogue meter.

Input is 9VDC @ 0.075A.
Output is 33VDC @ 0.080A
 
When i measure DC mA, the magnet slows down a lot, is this because it's such low amperage that even measuring it is taking too much away ?


Gary.