Confusion about inrush current with triac as AC switch

cmartinez

Joined Jan 17, 2007
7,314
Thank you! I'm clear now. That's why I just read that zero crossing switches are not recommended for large inductive loads as also stated in this App Note. After all, I just mixed the loads, that's why my confusion.
Hey! Thanks for posting that. I too am learning something new out of this thread.

As I side note, I strongly suggest you take a look at inrush current suppressors. Those devices present a certain amount of resistance at startup, but then almost go down to zero when the load stabilizes.

Here's an example of what I'm saying.
 

Thread Starter

Xavier Pacheco Paulino

Joined Oct 21, 2015
728
Hey! Thanks for posting that. I too am learning something new out of this thread.

As I side note, I strongly suggest you take a look at inrush current suppressors. Those devices present a certain amount of resistance at startup, but then almost go down to zero when the load stabilizes.

Here's an example of what I'm saying.
Yeah, I'm using one of those at the input of the bridge rectifier for limiting the inrush into a bulk capacitor at startup. It works well.
 
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