Re: Terry's DRSSTC - input DC rectifier and filter stuff

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "colin heath" <colin.heath4@xxxxxxxxxxxx>

hi steve,
Good luck with this project.  I started working with even smaller
coils, and have a DRSSTC running at 550khz ;-)  It throws out some
cute 6-7" streamers at about 50W or so :-).  I will post details to
the TCML when i get the final version built.  But the fact that it
worked well at 550khz suggests that you really *can* build a DRSSTC
driver for just about any (resonably sized) secondary out there, just
have to use the right IGBTs ;-).

what igbts did you use for this steve as i have a secondary kicking around
that frequency and fancy building dr driver for it.
cheers
colin heath
----- Original Message -----
From: Tesla list <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Friday, December 03, 2004 2:56 PM
Subject: Re: Terry's DRSSTC - input DC rectifier and filter stuff


> Original poster: Steve Ward <steve.ward@xxxxxxxxx>
>
> Hey Terry,
>
> Nice looking PCB ;-).
>
> Are you planning on mounting another lytic right on the H-bridge
> itself? or are you just going to keep your output connections from
> that board very short?  Im sure you realize that any inductance
> between the lytics and the H-bridge means voltage spike at high
> currents... better keep those inductances down!!
>
> Good luck with this project.  I started working with even smaller
> coils, and have a DRSSTC running at 550khz ;-)  It throws out some
> cute 6-7" streamers at about 50W or so :-).  I will post details to
> the TCML when i get the final version built.  But the fact that it
> worked well at 550khz suggests that you really *can* build a DRSSTC
> driver for just about any (resonably sized) secondary out there, just
> have to use the right IGBTs ;-).
>
> Looking forward to seeing your project working!
>
> Steve
>
>
> On Thu, 02 Dec 2004 21:07:33 -0700, Tesla list <tesla@xxxxxxxxxx> wrote:
>  > Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>  >
>  > Hi,
>  >
>  > Got the filter parts in today and built it up...
>  >
>  > http://hot-streamer.com/TeslaCoils/MyCoils/DRSSTC/PC020019.JPG
>  >
>  > It can take a full IGBT nuclear "cross conduction and cool explosions
>  > event" (CCCEE) on the output while keeping the AC line side safe and
>  > happy.  Prolly holding $300 in R&D there ;-))
>  >
>  > 6 x 9 PC card that packs "70 TIMES" the energy of most TC primary
>  > caps!!!  It could kill an elephant dead (unlike Edison, I won't verify
> that)...
>  >
>  > I think I will stick it, the breaker, line filter, and discharge
circuit,
>  > and a 300V meter in a nice rack case...  Another $300!!!
>  >
>  > This ain't cheap stuff!!...  But blowing $3000 of computers ain't cheap
>  > either...  I now have 4 computers on my desk...  Do this stuff al the
time
>  > at work...  But "I don't care there"...  When repairs are on "my
nickle", I
>  > do care ;-))
>  >
>  > It could also power my "waiting" OLTC that has never been "really" put
to
>  > the test...  Big hefty AC to DC filters that pack lots of capacitance
seem
>  > to be in great need nowdays ;-))
>  >
>  > I think big brass output bolts and wing nuts on the back of the rack
>  > case...  Like 3/8 to 1/2 inch...
>  >
>  > I am looking for a 0-300VDC Simpson meter in excellent to new
>  > condition...  Newark has them in stock for $95...  If anyone has them
>  > cheaper (in stock) I am interested ;-)
>  >
>  > Cheers,
>  >
>  >        Terry
>  >
>  >
>
>
>