res_smps
Member
Dear all,
is there anyone interested in SMPS using TL494?
i am developing a SMPS using TL494 (because cheap and easy to find here), but i don't have enough time improving it
- it is regulated, TL494 placed on primary side, with GDT to drive mosfet (because i found so many counterfeit IR2110 here so i choose GDT)
- isolation using optocoupler, not GDT
- no additional auxiliary supply for TL494
- EPC4649S core for main transformer
this is my progress so far :
regulated +-45V, (using TL431 as error amplifier, not just a zenner)
down to 44,9V in 200W load
down to 43,6V in 380W load
i will attach schematic and picture, and simulation files later
terima kasih,
res
is there anyone interested in SMPS using TL494?
i am developing a SMPS using TL494 (because cheap and easy to find here), but i don't have enough time improving it
- it is regulated, TL494 placed on primary side, with GDT to drive mosfet (because i found so many counterfeit IR2110 here so i choose GDT)
- isolation using optocoupler, not GDT
- no additional auxiliary supply for TL494
- EPC4649S core for main transformer
this is my progress so far :
regulated +-45V, (using TL431 as error amplifier, not just a zenner)
down to 44,9V in 200W load
down to 43,6V in 380W load
i will attach schematic and picture, and simulation files later
terima kasih,
res