Zedman
Full Member level 6

I would like to have 3 - 3.3V max from NiMh AA batteries.
I have 3 of them in serial but as they 1.2 V each they make 3.6V and 4.2V if they are fully loaded.
I want to run 2 MCUs which work from 3 - 3.6V from it so I need to regulate the voltage to that interval.
But what's the best and cheapest way to do this? Just using a 3.3V zener would do the trick, but does it affect the battery life?
Would it be better to use just 2 batteries and use a Step-Up DC-DC?
thanks
Zedman
I have 3 of them in serial but as they 1.2 V each they make 3.6V and 4.2V if they are fully loaded.
I want to run 2 MCUs which work from 3 - 3.6V from it so I need to regulate the voltage to that interval.
But what's the best and cheapest way to do this? Just using a 3.3V zener would do the trick, but does it affect the battery life?
Would it be better to use just 2 batteries and use a Step-Up DC-DC?
thanks
Zedman