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[TCML] DRSSTC Waveforms (updates)
An update from my previous thread, With attempt of inductance and resistance.
I decided to just wind my own inductors. I used barry's inductance calculator for air core inductors. I then made 10 counts of 10uH inductors. I understand its rough estimates. I hooked the inductor (L) and resistor (R) in series. Which was then in parallel to the CT. See the figure i included below of my hookup. (Fig A)
I took a picture at each inductance level. 1 inductor, 2 inductors, 3 inductors, 4 inductors, and 5 inductors.
I adjusted the pot, and it didnt shift the waveform till the very end where 1 turn shifted it maybe 5mm. so I had fine control over it. As I adjusted it, I was watching the ZOOMED square waveform, right side, ringing. I djusted it until the line was flat, but if i adjusted it more, the thing flipped out making very bad waveforms, and required me to adjust back, and reset my driver. I assumed this is proper acting of the driver, because I think its switching too early, causing issues. So, I didnt see this is bad operation. To me it sounds expected. Anyways, I have a few questions.
First, Why is it that the top waveform, looks like i have BAD ringing. Yet the zoomed in 2nd-timer waveform, the ringing on the right side of the square, looks lovely (for the most part)? The same spot, in the above wave, looks horrible. What do I beleive? The zoomed in, or the zoomed out?
Second, The ringing on the left side seems fully uncontrollable. I can fully kill it on the right side (comparing to the zoom version), but I have NO control over the left side. Is this the side that requires delay triggering? Such as the resistors I have on my gate of the CM300?
If you think it would make a difference, I CAN try all in parallel. (Fig B)
Figures (A) and (B)
http://i.imgur.com/HKGVr.png
Waveforms
http://i.imgur.com/k325x.jpg
As a side note, The CM300 currently has 15 ohms of resistance on each leg. It originally was 5.1 ohms
Any suggestions/ideas are welcomed, I will try other orientations of the (L)(R).
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