- 33 months ago
Good afternoon~friends Can I ask you some suggestions about making a battery charger based on L200? I need to emphasis that my professional knowledge is limited. I would like to make a battery charger based on the IC--L200. As the datasheet of L200（ http://www.kynix.com/uploadfiles/pdf9675/L2004F31.pdf ） shows,it is a five pin variable voltage voltage regulator IC.The charging circuit can be fed by the DC voltage from a bridge rectifier or center tapped rectifier.Here the IC L200 keeps the charging voltage constant.The charging current is controlled by the parallel combination of the resistors R2 & R3.The POT P1 can be used to adjust the charging current.This circuit is designed to charge a 12 V lead acid battery.The transistor t1,diode D3 and LED are used to make a battery reverse indicator.In case the battery is connected in reverse polarity ,the reverse polarity indicator red LED D5 glows.When the charging process is going on the battery charging indicator green LED D4 glows. Has anyone finish such a battery charger before? Could you give me some suggestions about it? Appreciate it a lot !