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Ni Cd Battery Charger Circuit with LM317

Today, the spread of rechargeable batteries, chargers and circuits that are required for them has led to the spread. Ni-Cd batteries, cell phones, battery-powered drills posal is widely used in many electronic devices and circuit.  Ni-Cd Battery Charger Circuit Diagram These types of circuits are used to charge the batteries, under constant tension, provide stable current level circuits should be pretty good. The output voltage can be set for this purpose, a charging circuit is made ​​with LM317 IC regulated. Improved standard LM317'li circuit connection, the figure was obtained charging circuit. Current limiting circuit formed by transistors, resulting high current output off, which makes the task of protecting the circuit and the batteries. Circuit, 5 Ah (Ampere-hours) of current to the battery can provide 1A'lik. LM317 integrated circuit connected to the refrigerant heating must be avoided. Output connected batteries, charging circuit output voltage value in accordance with ...

Ni Cd and Ni MH Adjustable constant current Circuit Diagram

This is a battery charger circuit with adjustable current for Ni- MH or Ni -Cd . It can be used for a constant current power , which can be set to any value from a few milliamps to about 500 mA . The maximum current is 500 mA , because that is the limit of transistor BC140 . The input voltage must be above 5.25V output voltage , this is due to losses as 1.25V current limit and approximately 4V regulator .  Battery Charger Ni-Cd and Ni-MH Adjustable constant current Circuit Diagram     The LM317 regulator is used , it should have a sink . C omponents R1 100Ω resistor VR1 trimpot or potentiometer 500Ω Capacitor C1 0.1μF C2 Capacitor 0.01μF Diode D1 1N4001 Q1 Transistor BC140 IC1 Voltage Regulator LM317