All the SIDAC's got hot. As Phil has said, the 125kHz upper design
parameter was being exceeded by a factor of 8 so that is the
reasonable outcome.
I will stick to big coils from now on (evil grin...)
Peter
www.tesladownunder.com
----- Original Message ----- From: "bartb" <bartb@xxxxxxxxxxxxxxxx>
Hi Peter,
Sounds like the SIDAC's are not turning off, but rather sharing the
current path even after the IGBT turns on. Did you make any
modifications to the circuit such as the anti-parallel diodes? Were
all 4 segments of SIDAC's scorching hot or just on the segment with
the that particular hot IGBT?
Bart
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