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New type of coil needs a name... OL-DRSSTC 7



Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>

Hi All,

I guess my little OL-DRSSTC thing seems to be working well ;-)) But "OL-DRSSTC" was "picked fast" for a name because it is easy to find in a file search...

But it really needs a "better" name, acronym, or abbreviation... Virtually "all" of "your" PC's microprocessors were made with a circuit called the "clampinator" (same time the "Terminator" movie came out...) by "me" :o))) But I have been since "told" that I am not good at "making up names" as such names need to be explained later to giant groups of people :oD

So I am open to whatever "designator" this sort of new "thing" can be known by... There is still time to "fix" this one :o))

Cheers,

        Terry



Hi All,

I was not able to work on the OL-DRSSTC concept thing for the last few days, but today I am back at it.

It seems to work fine!!!!!

I am just running in a "single shot" mode right now and there is a 1 ohm damping resistor in the primary loop just to keep things pleasantly under control for testing.

Here is the first time the primary only system fired where the CT feedback fully "takes over" the IGBT gate drive. The primary was a 56uH coil, 37.5uF cap and the 1 ohm "load" resistor. The 440uF storage cap was charged to 200VDC:

http://hot-streamer.com/temp/OL-DRSSTC-2005-10-09-01-First-Fire!.gif

Primary loop current is in yellow and gate drive voltage is in blue.

At about 40 amps of primary current, the gate drive voltage locked in solid and was nicely clipped at 25 volts by the gate transorbs.