Mysterious Resonant Circuit

[eldarion]

@all,

Something I'd like to point out is that high-frequency ferrite cores appear to be a must.  I tried this circuit with a Micrometals mix 52 iron powder core (u_r of 75 at DC) and the circuit wouldn't even work--it just sat there drawing < 10mA @ 13.8V.  My next attempt will be with a large HF ferrite core from an old VGA monitor cable...

@EMDevices,

Can you please post a large picture of your circuit, or verify that your core is ferrite?  It looks like it is ferrite from what I can see in-between the windings in the small pictures...

Thanks!

Eldarion

[Mannix]

Hey, all replicators!

Em has said that he has 180 phase shift....
What we were able to some how get 120 deg and 240 deg ......3phase

or 90 180 270......... 4 phase....and so on

That means it MUST be spinning  ...  early days just brain storming


It been bugging me for a long while ...how to get multiphase inductively..without moving parts



The core  oscillator for what ever we want to configure?

I hope so..I really do


Lindsay

[xee]

@EMDevices,

I have more scope shots comparing the voltage at the 3 coils,  and it's very interesting that they are out of phase with each other.  If we assume coil A is 0 phase,  then coil B seemed to be 90 phase, and C was 180.   This tells me that voltage is not determined entirely by the FLUX changeing in the core, as in V = N d phi/dt, or else they should all be in phase, wouldn't they? 

I think you know this, but just in case. The phase that is measured across the coil windings will depend on the component attached to the coil winding. To compare the phase coming out of the windings it would be necessary to measure the phase of each winding with only a resistor attached to the winding.

[aleks]

@EMDevices,

I think you know this, but just in case. The phase that is measured across the coil windings will depend on the component attached to the coil winding. To compare the phase coming out of the windings it would be necessary to measure the phase of each winding with only a resistor attached to the winding.

Do not kill the achievement. All know that L and C shift voltage phase by 90 deg. What's more important how it turned out in tandem. I do not think dissecting it and "proving" that with resistors it's all in-phase, is a worthless affair.

[otto]

@Mannix

tap into the collector.

Otto