Pulling 5v from a 9v battery

[Jim Mirra]

I need to pull 5v from a 9v battery. how can this be done and would the
battery drain slower?

Thanks,

Jim

 

[Wouter van Ooijen (www.vo]

I need to pull 5v from a 9v battery

pull very hard and see what you get?

OK, use a 5 volt regulator, preferrably a low-drop type like LM2950
because the normal ones need alt least 2V drop and a 9V battery will
quickly drop below 7V.


Wouter van Ooijen

-- ------------------------------------
http://www.voti.nl
PICmicro chips, programmers, consulting

 

[Old Hag]

you could use a voltage regulator like a LM7805

battery drain would not be less.

for power saving use a switch mode regulator but

cost and complexity may not justify.

why not use 3 x 1.5v (1.7v new off load) nominal AA or AAA voltage will be
(4.5 -5.2 )ok for most 5v circuits.

Andrew

"Jim Mirra" <jmirra03@comcast.net> wrote in message
news:m-OdnX549byBm2KiRVn-gg@comcast.com...

I need to pull 5v from a 9v battery. how can this be done and would the
battery drain slower?

Thanks,

Jim