[TCML] SISG DOPE?

[piranha]

Also see the "Main Document" here too:

http://drsstc.com/~sisg/

The 270V SIDACs will work fine at a little lower voltage if the 300V 
ones are all sold out. 

Terry

 

bartb wrote:
> Yes. The SIDAC's conduct as the sum of the series string. Once the 
> Sidac's fire and turn on the IGBT's, the IGBT path effectively shorts 
> the Sidac path causing the Sidac's to turn off. Thus, their ready to 
> start again when the IGBT's turn off. In the links Terry provided is 
> probably the topology paper which gives a clear understanding of the 
> circuit.
>
> Take care,
> Bart
>
> Ed Phillips wrote:
>> Thanks - haven't read much of my mail today [this one attracted me 
>> because of the subject] so haven't gotten around to Terry's note but 
>> I'll look at it.  Am I correct in believing that the breakdown 
>> voltage per stage is approximately the sum of the SIDAC voltages?
>>
>> Ed
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