battery saver?

Thread Starter

burtS

Joined Mar 6, 2008
29
I have a simple Darlington circuit that can operate anywhere between 3v and higher. I want to run it using a 9v battery. Would I lengthen the life of the battery by using a zener to decrease battery output to 6v or less?
 

MrChips

Joined Oct 2, 2009
21,660
No. Any excess energy is wasted as heat generated in the zener.
What you need is an efficient DC-DC converter that drops the 9VDC down to 3VDC.
 

Thread Starter

burtS

Joined Mar 6, 2008
29
No. Any excess energy is wasted as heat generated in the zener.
What you need is an efficient DC-DC converter that drops the 9VDC down to 3VDC.
Thanks for the fast reply. DC-DC converters appear to be rather expensive, much cheaper to replace battery when needed!
 
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