How to prohibit negative pulses on a transformer?

[neazoi]

Youu know you are already giving the inverted saw tooth !!! with exponential decay... I am just saying to extend it... I think you are meaning the huge negative pulse??

that can be easily arrested by putting parallel diode in the primary as chuckey said.....

Sure, I will try it indeed.
What if one does not want to use semiconductors at all? Is there any other possible way to do it other than supplying a inverse sawtooth input?

*I am sorry to push you, I just want to see the limitations here.

 

[Venkadesh_M]

If you already have a source for inverted saw tooth pulse you don need anything, but with this configutration you need at least a diode or something semiconductor.............

if you need to demonstrate without any such components GO for such a source..........

 

[Venkadesh_M]

Hi Did you succeeded?, use a fast switching diode like in4148 with two in parallel because you have very low turns in primary...