Hello Steve.
Where did you got this core?
What is your AL value?
I contacted a supplier and said what range of frequencies i will use and they replied "we sugest about 2500 perm."
If you dont know and you have a LCR meter, you wind 100 turns or so, and measure the inductance with the mounted core, the go to:
http://powermagnetics.co.uk/calculator
enter inductance and number of turns you winded and you get the AL value.
High AL value core saturates at low freqs.
Try a different core like old color tube TV flyback core like Max miller did. I got some bubbles with tap water with this type of core.
I hope it helps a bit.
Hi X-blade
The core has a permability of 2000.
I dont have a LCR meter, but i do have an inductance meter and capacitor meter.
The fun thing is, that i see lots of nice waveforms on my scope.
It doesnt matter which coil i use a secondairy or chokes.
Today, i added 1 extra diode in my setup and had a big succes!
Every 5 seconds, 1 tiny buble........
Yeah, it was still shit.
What did Max do? Thought he replicated a working VIC?
I just replicated the VIC as seen and measured by Don Gable.
So, with destilled water and 1 extra diode, i got some tiny bubles today, after trying of combining coils, turning them around, flipping, put them in series etc etc etc.....
My 2 cents is that some leaking current is creating the 5 bubles i seen today....