hi, I am searching a schematic for cellphone universal voltage input(85V~264V) power adapter in internet, and I couldn't find any circuits for this.
The small AC-DC cellphone ac adapter is extremly cheap in market, but it is so strange that there is no circuit schematic in internet.
My understanding so far is that it should have some flyback circuit with no PFC or EMI filter because of low power. I just want to know a little bit more info for this circuit layout so i can implement the circuit for the project I am working on.
Could anyone help providing the links or circuit simple follow chart? Many thanks
The small AC-DC cellphone ac adapter is extremly cheap in market, but it is so strange that there is no circuit schematic in internet.
My understanding so far is that it should have some flyback circuit with no PFC or EMI filter because of low power. I just want to know a little bit more info for this circuit layout so i can implement the circuit for the project I am working on.
Could anyone help providing the links or circuit simple follow chart? Many thanks