E-Orbo replications

[Omega_0]

For those who are wondering how I arrived at the compensation values (dVs and dVin above), here is the calculation:

IV part
(Vs+dvs)*(Vin+dvin)/Rs----(1)

I^2R part
(Vs+dvs)^2*Rin/Rs^2------(2)

condition ... (1)-(2) = 0

(Vin+dvin)*Rs = (Vs+dvs)*Rin
VinRs - VsRin = dvsRin - dvinRs ----- (3)

plug in the known values -
3.5933*0.974 - 2.5244*1.3296 = 0.14343196 = dvs*1.3296 - dvin*0.974
0.14726 = 1.36509*dvs - dvin
dvin = 1.36509*dvs - 0.14726 ----- (4)

So (4) gives values of dVin for values of dVs, and this formula is used in excel above, with reasonably guessed small value of dVin.

[Omega_0]

I'm facing some problems even though I'm able to measure voltages to 12 digit accuracy and resistances to 4 digit accuracy. The sense resistors heat up and vary randomly. The scope probes pick up spurious signals, and display small but random offsets. No two readings are same. Note that we are talking about extremely accurate measurements.

The scope and micro ohmmeter never agree.

Now that I don't have a million $ lab, I must give up measuring accurately. The other way is to increase the output so much that it all makes sense in the presence of all the noise and inaccuracies. For that I'm building another test setup with lot of output coils.

[Omnibus]

@Omega_0,

Don't give up. You're one of the few competent people here quietly doing superb research. Wonder if something can't be done to persuade Sean McCarthy to let you borrow one of his Tektronix 7104 scopes with the current and differential probes? After all you're the first independent researcher to confirm his results. What do you think about this idea? Don't know where you're located and whether or not you can get associated with a university lab but maybe some of us can write to Sean and see if he would be willing to do that. I don't recommend, however, signing of all those nda's and skdb or whatever, if that would be the condition.

[Omega_0]

After all you're the first independent researcher to confirm his results. What do you think about this idea?

Omnibus,

I can't say I've confirmed their results. Simply because their results are unknown to public, there is no data, no measurements, no calculations... only marketing. I've only replicated their demo traces, with some assumptions. This can be either totally accurate or can be a total mistake.

Now, I'm putting this disclaimer here because I don't want people to take my observations as confirmation of Steorn's claim and invest in Steorn on this basis (and suffer any loss or disappointment).

Your idea of asking Sean M for providing help in this replication shows your best intentions really and I appreciate your support. I'm located in far east and live hand to mouth most of the time, so any kind of travel and offline collab is impossible at this time. There are more qualified and resourceful people who live nearby and we should promote them, if they wish so. Moreover I highly doubt that Steorn is interested in getting any kind of independent verification, else they would have done that by now.

Secondly I'm against signing NDAs and that's why did not apply for their license. But if even one credible person reports anything positive about this tech, I'll do that too. So far no one has come forward with any results. I'm not giving up on the project, just giving up the measurement method that assumes too much of stuff.

[Omega_0]

Some more improvements in the setup:
Cores are now vertical and are mounted on adjustable arms to position them perfectly for minimum CEMF. The arms move like a record player arm but only within a few mm of the center line of the magnets above on the rotor.

Also mounted are 12 hand wound air core coils, placed above the rotor. These are wired together in three sets of 4 coil each. These will hopefully provide 3 x 1Vp-p output on open circuit, and will drive 3 load resistors. Waveforms from two of them are shown below.

Hoping to get ample output this time, which will take care of tolerances at the input.