I have already read the article on the url mentioned above, I still don't get how a current injector works and when is this kind of circuit needed. As I look at this circuit, it is just like a current source.A good start is here: http://en.wikipedia.org/wiki/Current_injection_technique
Ok, I agree it's not described, HOW it works. But the WHY it needs to be implemented is explained in the article. "to reduce the turn-OFF switching transient of power bipolar semiconductor devices (like IGBTs)"I have already read the article on the url mentioned above, I still don't get how a current injector works and when is this kind of circuit needed. As I look at this circuit, it is just like a current source.
Attached file is the current injector circuit that I saw. This circuit is from the TI's "Handbook of Operational Amplifier Applications"Ok, I agree it's not described, HOW it works. But the WHY it needs to be implemented is explained in the article. "to reduce the turn-OFF switching transient of power bipolar semiconductor devices (like IGBTs)"
Could you please post the circuit you saw?
by Aaron Carman
by Jake Hertz
by Jake Hertz