Re: RE: [TCML] DRSSTC weird waveform behavior

[Steve Ward <steve.ward@xxxxxxxxx>]

Tuomas,

That is good that it works alright for you, though the limitation here is
really the 74HC14 input and its hysteresis band.  For small signals, the
trigger threshold difference will cause more/less phase shift.  At highest
currents, though, your signal is pretty large so the zero-current detection
should be pretty good.  And indeed, it looks like you are getting good
results, so great!

Steve

On Mon, Jul 4, 2011 at 7:11 AM, Tuomas Koivurova <tkoivuro@xxxxxxxxx> wrote:

> I can confirm that even though this R/L network trick is far from
> optimal way to get some phase lead it still works with your first
> universal driver design. After i played around with some R/L
> combinations my ringing mess turned out to something like this:
>
> http://koti.mbnet.fi/kizmo/HV/DRSSTC/340VDC1200A.jpg
>
> Still some random spikes but the difference is like night and day. Too
> bad i dont have pics about how bad it was before.
>
>
>
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