Hello everyone, first of all I have to apologize because of my English, it's still my second language.
Because i have to travel a lot i could use a USB charger, to charge my mp4 player. Because USB output voltage is 5V, i had an idea to use 7805A semiconductor.
I would use 9V battery as a voltage source and 7805A circuit as a voltage converter, Do you think i need heat sink ?
And also what do you think about this project ?
Because i have to travel a lot i could use a USB charger, to charge my mp4 player. Because USB output voltage is 5V, i had an idea to use 7805A semiconductor.
I would use 9V battery as a voltage source and 7805A circuit as a voltage converter, Do you think i need heat sink ?
And also what do you think about this project ?