hello
i want to build a cell phone charger and i have a small transformer so i need to increase the frequency of 220v/50hz to higher frequency and in order to do that first i rectified the 220v ac and used a 2uf capacitor then i am confused ho to have a square wive od even a sine wave and then decreased the voltage with my small size transformer to around 10 volt
so my question is that do i have to use an oscillator or what and thank you
i want to build a cell phone charger and i have a small transformer so i need to increase the frequency of 220v/50hz to higher frequency and in order to do that first i rectified the 220v ac and used a 2uf capacitor then i am confused ho to have a square wive od even a sine wave and then decreased the voltage with my small size transformer to around 10 volt
so my question is that do i have to use an oscillator or what and thank you