alexan
Newbie level 3
smps transformer specifications
Hi
I am planing to design forward off-line switching power supply using UC3842 with the following ratings:
Input: 100 -240v
outputs:
12v 3A
5V 250MA
The problem is that the transformers available in the local market don't have any listed specifications ( Core material ...etc) they are E type ferrite this is all I know so is it possible to do the design without knowing the transformer specifications for example by trying different frequency ranges and else.
P.S: I will be using this smps in inteligent NiMH charger circuit using PIC microcontroller
Thanks in advance
Alexan
Hi
I am planing to design forward off-line switching power supply using UC3842 with the following ratings:
Input: 100 -240v
outputs:
12v 3A
5V 250MA
The problem is that the transformers available in the local market don't have any listed specifications ( Core material ...etc) they are E type ferrite this is all I know so is it possible to do the design without knowing the transformer specifications for example by trying different frequency ranges and else.
P.S: I will be using this smps in inteligent NiMH charger circuit using PIC microcontroller
Thanks in advance
Alexan