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Battery Charge Nominal Discharge Indicator Circuit

2016-05-12 03:55  
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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 Diagram

PARTS LIST
R11.5kΩ
R21.5kΩ
R31kΩ
R41.5kΩ
R51.5kΩ
R610kΩ
R710kΩ
VR110kΩ Preset
VR210kΩ Preset
D1Green LED
D2Yellow LED
D3Red LED
IC1LM741
IC2LM741

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 indicatorBattery Charge Discharge Nominal indicatorBattery Charge Discharge Nominal indicator design


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