[sdiy] 5V regulators

[danial stocks]

>I'd go with a separate 5V supply... or IF you can give away the 500mA of
>12V supply... then I'd use 1 regulator chip PER oscillator... that would 
>only
>give about a 60 degree rise on each... much smaller heatsinks would do !!!
>
>In general... its a BAD idea to generate +5v from +12v with a linear 
>regulator...
>unless the current draw is very small, or you literally have "Power to 
>Burn" !!!

Or you could use a 2 stage reg.. 12V in 7808 -> 8v ->7805 -> 5V
I've seen this done before.. split the diss between 2 regs..
Cheers,
Dan
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.