Wasting batteries question?

Submitted by Kieth on

Very new to electronics and getting acclimated to basic concepts. 
 

if a circuit is powered by 1.5v cell and requires a minimum of 1.2v to run, does that mean after we have drained the cell of only 20% voltage, we are discarding batteries that have 80% power left?   Or is there a way to utilize the remaining voltage even though it's too underpowered for the circuit?

its means that battery will run longer and drained after long time.

  Joined January 26, 2022      10
Wednesday at 10:18 AM

Hello Muhammad, Not sure if you understand my question.  

If a battery has a capacity of 1.5v... and a circuit requires at least 1.2v... when the battery is drained to just 1.1v or less, it seems the battery would be unuseable at this point.  is that how this works?  or do you do something within the circuit to get all of the usefulness from the battery until it has no voltage left?

  Joined February 04, 2022      2
Friday at 10:38 AM