[TCML] IGBT 1200V, 54A

[piranha]

I think the dV/dt or dI/dt was too much for SCRs and blows them up.  I 
don't remember the exact details, but there was some big problem like that.

Terry


Chris Swinson wrote:
> Hi Bart,
>
> True, I know I brought up the topic some years ago about using power 
> SCR/IGBT in place of spark gaps, though the prices were too high, I 
> think Terry invested in SISG but was many before also but on lower 
> power levels.
>
> One of the reason I am working on my high Q design is that it only 
> needs to operate up to 100V, and that will equal a 2KW power supply. 
> Uses a huge SCR, but there world is flooded with low voltage types and 
> can pick them up on ebay for next to nothing.
>
> DRSSTC seem great, was tempted to build one, but decided "its always 
> been done" kind of thing now, but for sure a great solid state design. 
> I am going for  a single SCR high Q design, a LOT of work, though in 
> itself is nothing new, but a real pain to design.. Hopefully once the 
> "beta version" is proven some more people will jump in with thier own 
> variations...
>
> Cheers,
> Chris
>
>
>
>
> ----- Original Message ----- From: "bartb" <bartb at classictesla.com>
> To: "Tesla Coil Mailing List" <tesla at pupman.com>
> Sent: Thursday, April 17, 2008 5:07 AM
> Subject: Re: [TCML] IGBT 1200V, 54A
>
>
>> BTW, Chris, these mods aren't new. We've known about them for many 
>> years. The problem I have is that I have no idea if they are worth 
>> while or not. I've never heard of a coiler trying one. The TCML has 
>> discussed these several years ago, but rhe prices were enormous (just 
>> like now), so not much more was discussed. We are still at that same 
>> cross road I guess.
>>
>> What did come into play between your post and the older ones which 
>> were identical, is the DRSSTC's and Terry's SISG. These were low cost 
>> compared to the high cost items you described (which others have also 
>> described in the past).
>>
>> It's not new, it's simply out of the price of even the wealthy. 
>> However, if I ever win the Power Ball (and I won't because I rarely 
>> play), I will give it a go.
>>
>> Take care,
>> Bart
>>
>> bartb wrote:
>>> Very interesting Chris! This module in TC service is for companies 
>>> like KVA Effects or those who's customers can afford the extreme 
>>> components or be built into the cost of the systems, could fine 
>>> these modules worthwhile. However, R&D test must be made first. It's 
>>> possible the heat is high and losses are large. Wish I had one to 
>>> experiment with!
>>>
>>> Take care,
>>> Bart
>>>
>>> Chris Swinson wrote:
>>>> Bart,
>>>>
>>>> Already tried ;-)  The cheapest one was $2000 or so, I still have 
>>>> the quote somewhere.. not cheap, but interesting ;-)
>>>>
>>>> Chris
>>>>
>>>>
>>> _______________________________________________
>>> Tesla mailing list
>>> Tesla at www.pupman.com
>>> http://www.pupman.com/mailman/listinfo/tesla
>>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla at www.pupman.com
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>>
>> -- 
>> No virus found in this incoming message.
>> Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.0/1379 - 
>> Release Date: 15/04/2008 18:10
>>
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla at www.pupman.com
> http://www.pupman.com/mailman/listinfo/tesla
>
>