Electronics Reduce USB 5v to 3v (2xAAA Batteries)

They look like this:

 

crap .. OK thank god I didn't bought that LM1117T-3.3

oh thanks for that photo .. about in line fuse

hey mean I must use in line fues ? what the different between the one I got that in line ?

Thanks

 

You can use any fuse holder, but the one you show has exposed terminals that will need insulating. The "in-line" types just have insulated wire coming out of each end with all the bare metal safely covered up by the plastic body.

 

mean when the fues make boom the glass stay inside .. I got that but I plan to make a fuse box like in the cars so this will be not a big problem with me

also I think that line only power up 1 hardware so I need to get another 3 to run another and for safety and overload . I'm right or not ?

 

My head is starting to hurt.

You're replacing 2 little AAA cells with the 5V line from a 1kW PSU. I think it can cope OK. The diodes can handle 1A max.

 

LOL yeah . sorry cpemma for the head Pain ..

Like this must the 1A Fuse be befour the diodes : 5V-- Fuse -->-->--> 2.9

you mean that 5V line from the 1K PSU is 1A ? or what

I was mean that I can only power up 1 thing with 3 diodes .. to run another thing need another 3 .. Right ?

Here some A Questions

What the A from the 5V line ?
What the A from the 12V line ?
What the A from the 3V line ?
What the A from the 3.3v line ?
What the A from the 9V line ?

Thanks

 

I give in, tell me the answers.

(You'll find them on the PSU label.)

In your case, the fuse should be first in line from the molex 5V red.

 

LOL oh thanks .. Time for test and I will show the ROCK thing soon . it will ROCK ON whole Bit-tech .. :