USB power injector circuit based on LM2575

[Fragrance]

hi all friends

You have seen lot of USB power injector one from silicon chip magazine which was republish in EPE magazine some other on web when you Google.
This hardware was develop for my own need and it is better and has lot of edge on those design, switch mode capable to deliver current truly 1 amps (tested my self) out put is hundred percent off if no input USB connector connected

It is useful handy tool;usually a Laptop cna give maximum 250ma power on USB port, so you can use it with USB power based programmers, USB power hard drive and lot more application

 

[alexan_e]

I'm currently using an RTL8187L USB WIFI adapted connected to a dell gx280 with a 5m extension,
I was thinking for a while to use external psu for that device, i may even get better transmit power,
i can place it in the end of the extension close to the wifi to avoid any voltage drop.

Thank you
Alex

 

[Fragrance]

I'm currently using an RTL8187L USB WIFI adapted connected to a dell gx280 with a 5m extension,
I was thinking for a while to use external psu for that device, i may even get better transmit power,
i can place it in the end of the extension close to the wifi to avoid any voltage drop.

Thank you
Alex

yes you can use it