16 Dec
2002
16 Dec
'02
6:56 p.m.
On Friday, December 6, 2002, at 03:44 PM, Ethan Dicks wrote:
So I was thinking about this recently... I have this
6V battery
pack that is intended to clamp to the back of a ZIP drive, allowing
it to be used away from power, say with a laptop. I've wanted
to use it for a portable source of juice for hobby projects (it
has, among other features, a built-in 110V mains plug and recharger,
making it handy to recharge), but I haven't expected to be able to
feed a 7805 at +6VDC and get +5VDC out the other side reliably.
How can I take +6VDC of battery power and get +5VDC regulated power
from it? If it matters, the currents involved will be under 1000mA,
but probably over 200mA.
You could use a low-dropout linear regulator like the LM2940. These
are readily available and easy to use, but not quite as cheap as the
7805.
-Dave
--
Dave McGuire "Why would a brothel need
St. Petersburg, FL a streaming media server?" -Kevin