Hi Peterae
you asked:
What do i need to do now to get my current up, is my choke too small, am i running at too higher frequency, do i need thicker wire on my primary and more turns?
I am running at just below 50Hz min adjusted, What frequency does yours run at, i had the impression you were in the low Hz
Sorry for the questions but the circuit seems to work well, maybe my problem is my supply only goes to 125V
I will try to answer some of these questions in more detail as time permits, as I have been away from the lab and the forum for a while.
When I get back to it, I will try to make some more exacting measurements of PRR and applied voltage.
Recently I changed the discharge cap to 0.18 uF (measured) and have been able to operate between 300-400 volts and able to tune in to the strange burst mode.
Earlier I was operating at around 162 volts with a 0.47uF cap when I was getting the burst mode, so it appears a certain energy is required on my setup to initiate it.
Note that this will be different for each setup because of wire tension etc.
Also it worked (burst mode) with my 3 H 200 Ohm choke but not with a lower resistance choke.
I am operating at a higher voltage, but perhaps you can use a larger discharge cap to get more energy, just be careful not to exceed the peak current rating of your SCR.
The burst mode will occur even without the wire attached, but produces extremely powerful vibrations when the wire is attached.
I've concluded the burst mode must be a function of the BEMF recharging the cap or a saturation phenomena of the choke.
In either case, I'm sure there are many ways to pulse the wires that do not involve such a temperamental oscillator system, and perhaps there are better ways of doing this such as your original noise testing setup.
As I recall somewhere between 2-4 msec PRR would trigger the burst mode.
My entire reason for doing these tests was to produce a vibrating wire setup that could later be formed into a circle so that I could try to reproduce the washboard and gyro effects with perhaps multiple PRR. I believe those floppy interior wires held in a foam like soft structure in the SM15 that was cut apart were the vibrating wires that are the source of the physical effects.
In effect I want to work backwards from the real physical effects, not to try to get OU out of the chute so to speak.
Be patient, I will try get more info as my schedule permits. Meanwhile try some higher resistance chokes if you have them handy.
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Topic: Replication of ION's bifilar (Read 96898 times)
