[Noisebridge-discuss] A simpler circuit for ... [driving multiple LEDs with minimal batteries]

[Dr. Jesus]

On Wed, Jan 19, 2011 at 9:21 AM, T <t at of.net> wrote:
> IYHO, why focus on linear regulators?  As Jonathan Foote pointed out,
> they aren't really more efficient than a simple resistor.  Are they
> simpler in any sense?
>
> If you want efficiency (which IMHO is a must when powering with
> batteries) don't you need a boost or buck or other switching supply?

Sure, if I'm the one doing the design.  However, there's an entire
class of people at Noisebridge who just want some power for an art
project and they're more interested in cheap and fast than efficiency.
 If you have a simple switching supply you want on the poster, draw
one up!