In this Instructable, ill show you how to make yourself an cheap usb car lighter .
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Materials
MATERIAL NEED :
1) Solder Iron with iron
2) Screwdriver (+)
3) Integrated circuit LM7805cv
4) USB female socket
5) LED (any color)
6) 2.7k Ohm Resistance (or higher)
7) Cigarette lighter Adapter PLUG
Step 2: MAKING
Follow The 2 schemes for make the adapter.
LM7805 pin :
1 : IS THE INPUT (12V) FROM THE BATTERY CAR. !! PAY ATTENTION DO NOT MAKE SHORT CIRCUIT !!.
2 : IS GROUND FOR ALL !
3 : IS THE OUTPUT (5v) ,PLUG THE USB SOCKET AND LED <- with resistance first.
LM7805 DATASHEET :
Step 3: RESULTS
THESE ARE THE RESULTS .
In the image the central pin of LM7805 is detached for dont do short circuit !
Participated in the