Modify Battery Level Indicator for 12V DC Battery | LM3914 Circuit

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SUMMARY

The discussion focuses on modifying a battery level indicator circuit using the LM3914 integrated circuit for a 12V DC battery. The user seeks assistance in adjusting resistance and capacitance values to optimize the circuit without a charging component. Participants emphasize the importance of sharing the circuit schematic for effective guidance and calculations related to the modifications.

PREREQUISITES
  • Understanding of LM3914 integrated circuit functionality
  • Basic knowledge of electronic components, specifically resistors and capacitors
  • Ability to read and interpret circuit schematics
  • Familiarity with voltage modification techniques in electronic circuits
NEXT STEPS
  • Research how to calculate resistance and capacitance values for circuit modifications
  • Learn about the LM3914 datasheet specifications and application notes
  • Explore voltage divider circuits for battery level indication
  • Investigate common practices for modifying existing electronic circuits
USEFUL FOR

Electronics hobbyists, circuit designers, and engineers looking to modify battery level indicators or similar electronic circuits using the LM3914 IC.

yournextboss
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Hi there,can anyone please help me modify a battery level indicator that i picked out from the web.Its actually a small circuit that i need to modify without the charging circuit at the end.I need to change any resistance or capacitance if any.If you can help then would it be possible to show me any calculations that had to be done in modifying the circuit.It runs off with a 12v dc battery and uses an ic LM3914.email me if u are interested and i will send a pdf of the circuit.Thanks.
 
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yournextboss,

Welcome to PF!

You are much more likely to get help if you simply post the schematic here and state exactly what you want the circuit to do when finished.

Fish
 
Hello the attachment contains the circuit of an Automatic emergency torch.It has a 2.4V Ni cd battery.I would like to modify it to a 6V Battery.The resistance and capacitance would need to be changed.Could u please show me your calculations when modifying the circuit,thanks :-)
 

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yournextboss said:
Hello the attachment contains the circuit of an Automatic emergency torch.It has a 2.4V Ni cd battery.I would like to modify it to a 6V Battery.The resistance and capacitance would need to be changed.Could u please show me your calculations when modifying the circuit,thanks :-)

and your existing battery voltage indicator circuit with the LM3914 ? :)

Dave
 

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