Engineers Garage

  • Projects and Tutorials
    • Circuit Design
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • EE Design News
    • DIY Reviews
    • Guest Post
    • Sponsored Content
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • Video
    • White Papers
    • Webinars
  • EE Learning Center
  • Women in Engineering

Inverter Battery Charger with Cut Off

December 23, 2020 By D.Mohankumar

This Battery charger can replenish any kind of 12 V Inverter battery or Car battery and keep it in top condition. The charger never allows the battery to Over charge or Deep discharge. It automatically charges the battery when its terminal voltage drops below 12 volts and switch off the charging process when the terminal voltage rises to 13.5 volts. So that the battery can be kept unattended.

 

Internals of an Inverter

Working of the circuit is too simple. The 15-0-15 – 1 Ampere step-down transformer with its rectifiers D1 ,D2 and smoothing capacitor C1 provides 15 Volt DC to the Three terminal variable voltage regulator IC LM317. It can handle up to 1.5 ampere current and can vary the output voltage from 1.2 volts to 37 volts. The output depends on the feedback from the output pin (pin 3) to the adjust pin (pin1) of LM 317. By adjusting VR1 it is easy to set the output voltage from 1.2 V to 15 V DC. The charging current depends on the values of R1 and R4 and around 300 milli amperes current is available for charging at 15 volt DC.

 

When the output is available from IC1, Green LED lights and current flows through diode D3 and resistor R4 to the battery provided the battery voltage is below 12 volts. Zener diode will not conduct in this state since the battery takes all the current for charging. When the terminal voltage of battery rises to 13.5 volts, the current flow to the battery ceases and Zener gets breakdown voltage and it conducts. The current from the Zener forward bias T1 so that all the output current from LM 317 will be drained through T1 to the ground as indicated by the Red LED. This stops the charging process. Charger remains in this state till the battery voltage drops below 12 volts (break down voltage of Zener). If this happens Zener turns off and T1 switched off allowing output current from LM317 to pass into the battery for charging again.
 
Battery is just like a Baby. It requires continuous attention and care. Click on the following links to read the articles related to batteries and maintenance.

 

 

 

Circuit Diagrams

Inverter-battery-charger

Related Articles Read More >

Siren Generator using UM 3561
0-2000V Digital Panel Meter using L7107
Electronic Smog detection using CD4017 IC
Automatic Inverter Battery Charger with Cut Off

HAVE A QUESTION?

Have a technical question about an article or other engineering questions? Check out our engineering forums EDABoard.com and Electro-Tech-Online.com where you can get those questions asked and answered by your peers!


Featured Tutorials

  • Introduction to Wireless Modules
  • ADC with NRF24LE1 (Part 2/14)
  • Interrupts with NRF24LE1 (Part 3/14)
  • Power Failure Indicator in NRF24LE1 (Part 4/14)
  • Using EEPROM of NRF24LE1 (Part 5/14)
  • PWM with NRF24LE1 (Part 6/14)

Stay Up To Date

Newsletter Signup

EE Training Center Classrooms

“ee

“ee

“ee

“ee

“ee

Recent Articles

  • Introduction to LUFA
  • What are the different types of integrated circuits?
  • Introduction to Wireless Modules
  • ADC with NRF24LE1 (Part 2/14)
  • Interrupts with NRF24LE1 (Part 3/14)

RSS EDABOARD.com Discussions

  • How to find 1's and 2's complement without using CMA operation in 8085 microprocessor?
  • Non-Inverting Amplifier (AC Coupled) : How to solve this circuit with lower and high frequency?
  • Electrolytic capacitor lifetime and rated voltage?
  • Syntax error in verilog
  • 2SC1971 Vs 2SC1972

RSS Electro-Tech-Online.com Discussions

  • Wirer up stereo needle
  • Learning C
  • Post some funny stuff...
  • Looking for an SOIC socket
  • QA pass
Engineers Garage
  • Analog IC TIps
  • Connector Tips
  • DesignFast
  • EDABoard Forums
  • EE World Online
  • Electro-Tech-Online Forums
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • 5G Technology World
  • About Us
  • Contact Us
  • Advertise

Copyright © 2021 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Engineers Garage

  • Projects and Tutorials
    • Circuit Design
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • EE Design News
    • DIY Reviews
    • Guest Post
    • Sponsored Content
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • Video
    • White Papers
    • Webinars
  • EE Learning Center
  • Women in Engineering