I posted this at OU last nite, but Im on moderation, so it isnt posted yet.
Bruce was trying to show what 'kicks' are in that thread, and I tried something a bit different using a trifilar wound on a core.
http://www.overunity.com/14045/how-to-make-multiple-kicks/msg379970/#msg379970"Here is something some of you guys might want to play with.
Below is 2 diagrams, where the only difference is where you connect the ground or negative(preferred I believe so far) of the square wave input.
The 3 coils are each 1 strand of a trifilar inductor on a ferrite core. The wire is 30awg RS. Measuring the inductance, Ive measured 1 strand at 30mh. Capacitance between the 3rd strand and the series bifi is 3.5nf.
The purpose for the 2 circuits is to show exactly one way or the other it should be connected, as one way works and the other barely has any output. So if you try it, just make the circuit one way or the other and you will see the output.
You can also just switch the input to the open ended strand to get the same differences. Could have drawn it that way also. :
So first, take 2 strands of the 3, and series bifi them, shown as the 2 inductors on the right. Then to a bridge and cap.
My sig gen is stand alone, no grounding. The reason I say is, Im not sure yet if actual 'grounding' affects the working of the circuit, as when I just touch my hand on the coils surface or touch wires, output diminishes. So grounding may hinder operation. A 555 can work here Im sure.
Considering the 3 strands are equal, when I input around 10khz square 4v dc biased, I get near 50v out of the series bifi. If 2v in, 11v out.
Out vs in is not linear. Im thinking possibly over 200v out with 12v in. Have not tried yet. But so far it seems as the input increases, the output is magnified by some factor. Will find out soon what factor that is.
What is interesting is when I disconnect and reconnect the output bifi, Im not seeing any significant loading on the input on the scope. Well, the only current flow if any is into a 3.5nf capacitance at 10khz. 10.125khz is the freq the bifi resonates at its peak.
I dont know if this is the kicks SM was talking about, but its pretty cool to see capacitive action happen in a transformer, being the primary is open ended, other than capacitive connection of the trifi windings. I have another winding of a bit thicker wire underneath the trifi, but using it as an open ended input, output is nill. Need to try that at higher freq thinking about it, as the capacitance between a trifi strand and the under winding, is .5nf. But the bifi wont work at that freq. But I will try.
Polarity of the sig + and - and which end of the strands to attach them to, I need to look very closely at my transformer to see what is actually what as to which end of each strand is which.
Im trying to get all that together to have a final hookup scheme and do a vid.
But I just wanted to throw this out there. I just put the thing back on the table last nite with some thoughts I had at work about it.
Back when I did the test as Bruce suggested, I seemed to dismiss that my output was pretty decent considering 2v sq in 10v out. Doesnt add up does it.
I wouldnt say there is much current flow from the input, but 10khz through a 3.5nf could possibly be an overall bit of back and forth current flow.
The output of the bifi remains a sine wave while loading the cap. I figured there would be cut tops and bottoms but no. Just a sine ever increasing till the cap is full.
Higher input voltage may be promising.
Mags"
Mags
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Topic: TPU Replicator looking for help {Has Instructions ??} (Read 50551 times)
