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Re: NEON- Re: Scientic Sys - induction heaters

JD Schueler wrote:
> 
> OK, here's the scoop on Scientific Systems induction heaters,
> straight from a phone conversation I had with the guy who seems to
> be in charge of both engineering and building them :::::::
> 
> -    The model he says is specifically designed for electrode
>      processing *is* the IND30, and that's the one shown in the
>      "neon" catalog John mentioned
> 
> -    The coil assembly (which he referred to as a "doughnut") is
>      approximately 3/4" ID, and will handle 15mm trodes
> 
> -    He says the average shell gets cherry red within 20-30 seconds
> 
> -    Power of the unit is approximately 150W; it runs at 50 KHz
> 
> -    It's to be considered an intermittent duty device due to heat
>      being absorbed by the coil assembly; swapping coils (they're
>      apparently plug-ins) and cooling one off while using the other
>      is how he suggests increasing the duty cycle -- says the
>      electronics can handle it
> 
> -    The price is $149.50, extra coils are $50 each.  In view of
>      John reporting $199.50 from the other catalog, either the
>      price has come down or I was incorrect when I thought I heard
>      that a coil is included
> 
> -    The units are said to be cheap partly because they're not
>      pretty, meaning they're something like "laboratory grade" and
>      not meant to be general market production items
> 
> -    Since they're not general production allow a couple of weeks
>      or thereabouts for lead time
> ..............
> 
> If that last item seems to imply "build to order," that's pretty
> much what the guy told me.  But as Morgan points out (thanks,
> Morgan!) that can be an advantage.  I was figuring on needing two
> units to do a standard tube, but it definitely seems like the
> jacks and 2nd coil are the way to go.  Or maybe the coil swapping
> mentioned above means it's a standard feature now???
> 
> Ah, coils:  I asked about the potential for home-brew coils, with
> the idea of avoiding having to put on the coil and then seal the
> tube to the manifold.  The guy said that's not a good idea unless
> one is good at calculating inductance and such - that the electron-
> ics could get easily zapped otherwise.  Then he said he's been
> working on a U-shaped coil for some time.  Good?
> 
> Sort-of.  He went on to say the problem is building an open kind of
> coil that won't spew out RF all over the place, inviting all sorts
> of problems with FCC certification and stuff.  None of which is
> probably worth it for low volume, low cost devices like this.  Then
> he had an inspiration:  He could offer the U-shaped coils in "kit"
> form, and that doesn't require certification as long as individual
> users don't buy a bunch of them and use them for mass production.
> 
> I told him I'd put that information out to the list and see if I
> could get a reading on how much interest there'd be in the "kit"
> coils.  Soooooooooooo, if all of y'all who might be potential
> buyers (and it sounds like very little real assembly would be
> required) would like to shoot me a short e-mail indicating such,
> next time I call him I can pass the info along and maybe he'll go
> ahead and build a few if there are enough affirmative votes.
> 
> JD

Reply from dirk:
I am in, for the U shaped kit. The U shaped coils are much more handy
then the "DONUT" 
shaped ones.

Best from dirk.
References: