Quote from: JustMe on June 02, 2008, 09:38:34 PM
Your greeting was fancier, but I sent him hotmail sheep. Now back to our regularly scheduled hockey game.

You win but due to hotfemaleness, not emailed sheep.

Quote from: CRANKYpants on June 02, 2008, 06:48:20 AM
Yes, and chances are when pulling the same power HV coils will have somewhat reduced overall lenz drag even if they have gone negative.

YES - DON'T CONFUSE LACK OF HV ACCELERATION - WITH HC LENZ DECELERATION - IT FOOLED THE "OLD" THANE AT FIRST.

NAIT

Nait alie,

Generally I like to convert to DC for generator tests, but just some raw AC numbers here...

With both HV and HC coils open it was drawing 227 watts

With an Ohmite brown devil 1200 ohm #1822 T-20 load resistor on the HV coils, the draw
went to 246 watts

The load resistor had 197 volts at .14 amps across it for approximately 27 watts.

The draw only increased 19 watts for this 27 watt output.

HOWEVER, just shorting the HV coil dropped the draw to 206 watts...

Note: all full speed tests.Series HV coils, one 70 ohm, one 90 ohm.

Note 2:  The wimpy little resistor got mighty hot in just one minute so I do believe the watts
are real watts.

Ron, just coasting

Steven.... that was 270 watts on a 12000 ohm load resistor, 'divide by ten ron', LOL

Quote from: i_ron on June 02, 2008, 09:43:33 PM

Steven.... that was 270 watts on a 12000 ohm load resistor, 'divide by ten ron', LOL

Very nice, as you only dropped the current a tiny tiny bit from the .15A quoted earlier that means you could have likely sacrificed a bit more current for a far higher voltage and wattage if you went to a 2 or 3k ohm resistor.  Very nice.  yes there is useful energy coming from the HV coils and in a practical designed aimed at OU (maybe not what Thane is going for in his Buggy) it seems HV coils would make the most sense and even if they had the same net mechanical loading watt for watt as a HC coils (as unlikely as that would be) simply because you can can choose to have any combo of generator and accelerator coils you choose with the flick of a switch. (plus there must be a point where they have no net effect either way mechanically either way and yet output some useful energy)

Quote from: i_ron on June 02, 2008, 09:43:33 PM
Nait alie,

Generally I like to convert to DC for generator tests, but just some raw AC numbers here...

With both HV and HC coils open it was drawing 227 watts

With an Ohmite brown devil 1200 ohm #1822 T-20 load resistor on the HV coils, the draw
went to 246 watts

The load resistor had 197 volts at .14 amps across it for approximately 27 watts.

The draw only increased 19 watts for this 27 watt output.

HOWEVER, just shorting the HV coil dropped the draw to 206 watts...

Note: all full speed tests.Series HV coils, one 70 ohm, one 90 ohm.

Note 2:  The wimpy little resistor got mighty hot in just one minute so I do believe the watts
are real watts.

Ron, just coasting

Steven.... that was 270 watts on a 12000 ohm load resistor, 'divide by ten ron', LOL

Those numbers don't work together. 1200 ohms - 197 volts - 0.14 amps. This deviates from Ohms law by nearly 20% - so either there's something wrong with your measurements of resistance, current and/or voltage or the load resistor has a significant inductive component - which you would then have to adjust for to determine real power. This is not being picky - 20% is a very large discrepancy considering that the "excess" power of 8W is only about 3% of your total power input.

Also, several other pieces of information are required to understand what's going on, for example:

- What happened to the motor speed for each of those three conditions?
- Did you keep the input voltage exactly constant or did you adjust it?
- Did you measure the power factor at the input and did you adjust the power readings for that?
- What is the power input when the coils are removed completely?

In addition, it would be very interesting to plot the power input against various values of load resistor. There may well be a more optimum load than 1200 ohms and it would be easy to find that by doing such a series of measurements.

volts and ohms
197v
0.1641 A
1200ohms
32.34w

volts and current
197
0.14
1407
27.58

ohms and current
168
0.14
1200
23.52

Sure maybe the resistor has inductance, or maybe it is out by 20%? (Silver ones have a 10% accuracy maybe his 'Ohmite brown devil' was out by more? that along with small reading errors with the current and voltage would account for the difference in conjunction with a tiny bit of inductance)

But it must be remembered that his HV coils use another 3.13w too at .14A  (I remember I gave a higher value in a previous post but I realize that was an error as I was taking the impedance not the ohmic resistance, whoops!)

But the overunity-ness of these readings don't mean a huge amount until they are compared with HC coils outputting the same amount because I'm not convinced personally that 30 watts out and 19 extra watts in is necessarily anomalous, although I have no doubt at all of the OU possibilities of Thanes device

addition: So if we assume the current is accurate at .14A and the resistance at 1200 and assume that the resistor has a highish inductor so we don't trust the voltage reading for our power calc. then we have 23.5 watts and then add 3w for the HV coil so we have 26.5w instead of Ron's initially reported 27w.