hi guys,i would like to know if any of u can help me with a cellphone charger circuit using a flyback converter...(12V input-required output 5v)...its for my project
hi guys,i would like to know if any of u can help me with a cellphone charger circuit using a flyback converter...(12V input-required output 5v)...its for my project
You don't need a flyback circuit. They are for getting high voltage from low voltage. You need a buck converter, or, if the current is low, a linear regulator, as Krumlink suggested.
Whether this is what you actually need for a cellphone charger, I don't know.
no...the thing is i have been asked to specifically do this as a project...
a charger using flyback converter or any simple circuit that uses a flyback converter...
But if it's a school project, he might not get a very good grade if he buys one and submits it as his project.
Of course, it might not be a school project. What a surprise that would be!
I looked up a few definitions of flyback converter, and they seem to be pretty consistent in saying that the output is isolated by a transformer winding from the source. Otherwise, the circuitry is like a boost converter, which I guess the joule thief is. I'm sure you could modify the joule thief to have a transformer-coupled output, but why???
No, I didn't mean why were you asking. I was just asking a rhetorical question - why would anyone want to implement the joule thief with transformer isolation.