Circuit Schematic 12V Battery Charge Nominal Discharge (Low) Indicator using LM741

BatteryCharger. - Here is Circuit Schematic 12V Battery Charge Nominal Discharge (Low) Indicator using LM741. The main component in this circuit is IC LM741 like in figure 1 below:
Figure 1. Schematic 12V Battery Charge Nominal Discharge (Low) Indicator (Source: www.electronicecircuits.com)
Component 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
Description

This circuit 12V Battery Charge Nominal Discharge (Low) Indicator using LM741 is used to monitors car battery voltage. It provides an indication of nominal supply voltage as well as low or high voltage. VR1 and VR2 adjust the point at which the red, yellow and green LEDs are on or off. For example the red LED comes on at below 10V, and the green LED at above 12V. The yellow LED is on between these values.

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