Cost-effective nickel-cadmium battery charger LM393

  
Cost-effective nickel-cadmium battery charger LM393 constructed as shown, it has the following characteristics: (1) constant current charging interspersed with large current di
Cost-effective nickel-cadmium battery charger LM393 - schematic

scharge, constant current charging current of about 300mA, the discharge current as the battery voltage increases and increased nearly full battery discharge current up to 400mA. Charging 1.5 seconds, 0.5 seconds discharge, intervals. After the high-current charging is completed, about 5mA trickle charge. (2) the detection of the battery voltage when the discharging is carried out, because the charging voltage is always higher than the discharge voltage, when charging is detected as the actual cell state error, but also reflects the battery is detected during discharge capacity. (3) rechargeable batteries can be 1-4, for 500mAh nickel-cadmium batteries, the charging time is about two hours, to meet the general needs.




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