Runtime for MCE in series vs parallel

parnell

Newly Enlightened
Joined
Jul 30, 2009
Messages
92
Location
Arizona
New to CPF

I know there is probably already a thread out there, but every search I run comes up without the topic I want.

I am looking at using a fivemega 7.2v 12AA to 3d, a single MCE, and a taskled converter.

Will a get more runtime with the led in parallel with a buck converter OR in series with a boost converter.

If you have any input or existing threads it will be greatly appreciated.
 

Chodes

Flashlight Enthusiast
Joined
Jun 5, 2008
Messages
1,092
Location
Australia
Treat this more as discussion than advice. I'm sure some experts will correct any mistakes..

I think rule of thumb is boost is less efficient than buck.
I believe you could successfully direct drive , just use a dimmer.
Depending on cells , 1.4A load (2.8A total , 1.4A each pair of 6 cells)
would not sag much, good match for the MC-E in series. I think a good PWM dimmer only circuit, rather than boost or buck can be more efficient.
 
Top