Re: [TCML] SCR tesla coil

[bturner@xxxxxxxx]

Has a lot to do with the trigger (gate) capacitance I would figure. Other
point is that an SCR only conducts in one direction, thus defeating the
whole idea of a spark gap. Perhaps in some sort of a PWM DC style,
changing the duty cycle of the current pulse into the primary tank
circuit...

- b



>
> Dear List
> I understand the rate of change in current with time (dI/dt) in the
> switching device in a TC is considerable. Is it still the case that only
> The SCRs capable of handling such severe duty are those with
> "interdigitated" gate construction e.g GTOs or has modern SCR technology
> changed this. Would a modern modern hockey-puck SCR such as the one
> described  here
> http://www.ebay.co.uk/itm/Capsule-thyristor-N195CH12-390A-ITav-/320794404043?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item4ab0d624cbwith
> ratings of 1200V and 390A be of running at least a small TC would the
> turn-on still be too slow?
>
> Jolyon
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>
>


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