non isolated power supply with tiny switch 4
Posted by: Motiontech
on
Hello,
I want to modify DER881 for a non isolated flyback using TL431.
Just looking for a circuit idea to implement feedback. There is a zener based design in RDR839, but want to use TL431.
Thanks.
Hi Motiontech,
DER-881 can be non-isolated design using TL431 by shorting primary to secondary ground.
Regards,
PI-Lupin the Third