Battery Charge Nominal Discharge Indicator Circuit


Battery Charge Discharge Nominal indicator

12V Battery Charge Nominal Discharge (Low) Indicator Circuit

This circuit monitors car battery voltage. It provides an indication of nominal supply voltage as well as low or high voltage.

Battery Charge Nominal Discharge Low Indicator Circuit

PARTS LIST

R1
1.5kΩ

R2
1.5kΩ

R3
1kΩ

R4
1.5kΩ

R5
1.5kΩ

R6
10kΩ

R7
10kΩ

VR1
10kΩ Preset

VR2
10kΩ Preset

D1
Green LED

D2
Yellow LED

D3
Red LED

IC1
LM741

IC2
LM741

741 8 pin ic configurations top view

741 PIN CONFIGURATION

VR1 and VR2 adjust the point at which the red, yellow and yellow, green LEDs are on or off. For example the red LED comes on at 11V, and the green LED at 12V. The yellow LED is on between these values.

12v battery charge indicator
Battery Charge Discharge Nominal indicator
Battery Charge Discharge Nominal indicator design


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