Various aspects of home brew inverters


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poida

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Joined: 02/02/2017
Location: Australia
Posts: 1440
Posted: 04:03am 02 Mar 2019      

  wiseguy said  
When there is a fast transient on the Drain, it is coupled back to the Gate. The Gate resistor forms a differentiator with the Drain - Gate capacitor and a combination of fast transient and insufficiently low Gate impedance (series r - even with the driver output low as you found)) can definitely drive the gate sufficiently to cause the FET to begin unintended conduction.


As you say, it can happen and I showed it happening in the above post.
I think I see this as theory looking to start a fight with us and we better be ready.Edited by poida 2019-03-03
wronger than a phone book full of wrong phone numbers