Re: Terry's DRSSTC - 6000 BPS >:o)

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Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

Hi Terry,

> Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>
> It seems that each bang just "adds" to the next.  I don't mean like a 
> streamer follows the path from the last bang.  It is like the T1 time is 
> just stretched out.  The T2 times seem to get lost and the streamer builds 
> like it was just one long T1 time.

What is the advantage in 25 bangs in a burst vs having one bang where T1 is 
25 times longer.  I would think the thermal time constant is longer than a 
burst period.  Could it be the smoothing effects that would have on the 
main bus ripple.  Maybe there is a current issue, if so, how long can T1 be 
for a single shot before overcurrent is an issue???  I guess I'm thinking 
if the IGBTs and controller could take it, what would happen if T1 were 
like infinite??


> I had to keep lowering the T1 time to keep the streamers at a sane length!!

When you vary something else??


> I worry about where the IGBT load is at.  The current should be low and 
> the heating should be low...

What is the concern if the IGBT's are over current and thermal protected???

BTW, it looks like you have 26 bangs per burst by looking at the scope 
pictures (might be an issue when you start doing real streamer experiments)

Gerry R