my power supply input 195-265 V AC Single 230 VAC input
100 W 19 V output
I see 34-38 V at output and ripple is almost +- 2 V in no load. Also when i load the power supply with 15 ohm, there will be no voltage (0 V). What is the wrong?
Also i want some other questions. My design procudure:
Firstly I design my power supply with AN-16. After that i try transformer with PIXls designer and i have manufacturer do transformer. After i took my tranformer, i set up the circuit with PI expert and see some faults aboout transformer:
1- There is no limit for air gap on AN16 and PIXls designer. But PI expert says air gap to high. Is there important?
2- What is the meanig and importance number of primary layer L?
3- Diode conduction time at AN16 is different from PI expert and it affect the number of primary turns. Which one is true AN16 or PI expert?