speedEC
Full Member level 6
Dear All,
I have to monitor the voltage of the 6v battery. If the battery reaches 6.9v (maximum), I have to show the Green LED as Battery Full to the user. Also, if the voltage goes down 5.5v then RED LED should be shown as Battery Low. I found one schematic using LM741 and UA741. What I want to know is how to set 6.9v as reference voltage? and why do we use Zener as reference voltage?
advance thanks.
pmk
I have to monitor the voltage of the 6v battery. If the battery reaches 6.9v (maximum), I have to show the Green LED as Battery Full to the user. Also, if the voltage goes down 5.5v then RED LED should be shown as Battery Low. I found one schematic using LM741 and UA741. What I want to know is how to set 6.9v as reference voltage? and why do we use Zener as reference voltage?
advance thanks.
pmk