Fig. 1 TL431 battery charger circuit schematic.

TL431 Battery Charger Voltage Detector Circuits Schematics

by Lewis Loflin

Follow @Lewis90068157

Fig. 2 TL431 constant current source circuit.
See TL431A Constant Current Source Working Circuits Demo

Fig. 3 TL431 constant current source circuit with ON-OFF switch.
See Power TL431 Constant Current Source Circuits

Fig. 4 TL431 CCS circuit with optocoupler ON-OFF switch.

Fig. 5 TL431 under-voltage detector circuit with optocoupler output.
See TL431 Over-Voltage, Under-Voltage Detector Circuits.

Fig. 6 TL431 complete battery charger circuit with auto current shutoff.

Fig. 7 TL431 over voltage detector for 5V circuits such as Arduino.

Fig. 8 TL431 over voltage detector with optocoupler output.

Fig. 9 Test setup TL431 12V battery charger circuit.

• Using TL431A Li-Ion Battery Charger Tutorials
• TL431A Lithium-Ion Cell Charging Circuits
• Charging Multi-Cell Lithium-Ion Battery Packs
• TL431 Over-Voltage, Under-Voltage Detector Circuits
• TL431A Constant Current Source Working Circuits Demo
• Power TL431 Constant Current Source Circuits

Related YouTube videos.

• TL431 12V Battery Charger Complete
• TL431A Lithium-Ion Cell Charging Circuits
• TL431 Battery Charger Circuit Calculations Revised
• TL431 10-Volt Charger Short Version
• Charging, Charge-Balancing 18V Li-Ion Battery with TL431
• 18.5V Li-Ion Battery Charger with TL431 short version
• TL431 Under-Voltage, Over-Voltage Detection
• TL431 Constant Current Source Circuits

• Arduino Measures Current from Constant Current Source
• Constant Current Source Theory Testing
• Arduino Controlled Power Constant Current Source

• LM317 Adjustable Current Boost Power Supply
• Constant Current Circuits LM334, LM317
• Build LM317 0-34 Volt Power Supply
• LM334 Constant Current Source with Resistive Sensors
• LM317 High Power Constant Current Source Circuit
• LM317 Constant Current Source Circuits
• Test SCRs and Triacs
• Basic MOSFET Transistor Test Circuits
• High Voltage MOSFET Switching Circuits
• 3 Amp LM741 Op-Amp Constant Current Source
• Current Limiter Testing of Zener Diodes
• Current Limiter for Opto-Coupler Inputs
• LM317 CCS for Light Emitting Diodes

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• Photodiode Op-Amp Circuits Tutorial

 

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