Hello i am an engineering student working on a project of Switch mode power supply with outputs of 12V 1Amp .For this reason i have used power integration software to design smps supply circuit *(Schematic attached )with 12V 1 Amp required outputs. I have implemented this Circuit on PCB as prototype for testing purpose but the issue i am facing when i measure output voltage with a multimeter it gives me 23 V instead of 12 V on one output and 19 v on the other with no load connected. I am new to SMPS power supplies . Experts please help me out what could be the problem
also note
* Due to a footprint issue in pcb design i have to put transformer on breadboard and connect it using jumper wires.
*also i wanted to know what RTN is . Is RTN the negative terminal . And what is the difference between GND1 and RTN (schematic attached)
also note
* Due to a footprint issue in pcb design i have to put transformer on breadboard and connect it using jumper wires.
*also i wanted to know what RTN is . Is RTN the negative terminal . And what is the difference between GND1 and RTN (schematic attached)
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