On Wed, Nov 3, 2010 at 9:49 AM, Oliver Seitz <[email protected]> wrote:
> > >A serious hardware guy will never use his scope connected to a PC, we can > talk about that other time, I let you understand why alone, measuring a 5KV > pulse with 1:100 probe. > > Good point ;-) But as all was below 12V and earth-free, I could have risked > it this time... > Maybe, however I remember I have measured the primary resistance of 600KW power transformers using a 12V battery (180Ah) and the a hi class voltmeter+ammeter. The time requested for the coil to charge was about 3 minutes and the arch when disconnect the battery from the coil has about 50cm lenght.... So, you have understood what I mean. :) > > >There are some guys which are building such devices in (small) series, > trying even to sell it. > > They're assembling it when ordered, shipping 40 days after purchase. The > ebay user comments mention lots of russian tubes, valves and spare parts > that were sold correctly, but it looks like they have never sold such a > generator before. > > I think it's curious that they're talking about battery capacity in the > product text. If the machine produces 1kw, there is an optimum capacity for > that, no point in increasing it. Why would you need backup for a device that > does not need any fuel? > > On the wikipedia page, there's a plausible explanation: The machine drains > the batteries, but uses a trick to make the batteries still appear to be > full. > > > There is a movie sowing what they do with back EMF: > http://cgi.ebay.com/FREE-ENERGY-FUELLES-GENERATOR-1-Kwt-AVIG-XXI-century-/250713195287?pt=BI_Generators&hash=item3a5fabc317#ht_9354wt_1135 > > They only show a big rotor with an obviously good bearing, some sine waves > at about 180 Volts (not the 220V they try to sell), lots of wires and > lead-acid batteries... That's unfortunately not enough to convince me :-D > > > While Seb uses his motors as generators, they build a motor and call it a > generator. In both cases there is both a voltage and a frequency by which > the rotational speed can be determined. The frequency would be the more > accurate in either way. So we're back on topic. ;-) > > Greets, > Kiste > > > -- > You received this message because you are subscribed to the Google Groups > "jallib" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<jallib%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/jallib?hl=en. > > -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
