RESISTOR TO REDUCE L200 POWER DISSIPATION ELECTRONIC DIAGRAM

RESISTOR TO REDUCE L200 POWER DISSIPATION ELECTRONIC DIAGRAM

Instead of in series with the input, the resistor R can be connected between pins 1 and 2 of the IC if the load is constant. You can see this in the right figure. This will make some part of the load current flows through the resistor and the other part through the device.

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L200 Battery charger circuit

A actual simple array charger ambit accepting about-face polarity adumbration is apparent here.The ambit is based on IC L200 . L200 is a bristles pin capricious voltage voltage regulator IC.The charging ambit can be fed by the DC voltage from a arch rectifier or centermost broke rectifier.Here the IC L200 keeps the charging voltage constant.The charging accepted is controlled by the alongside aggregate of the resistors R2 & R3.The POT P1 can be acclimated to acclimatize the charging current.This ambit is advised to allegation a 12 V advance acerbic battery.The transistor t1,diode D3 and LED are acclimated to accomplish a array about-face indicator.In case the array is affiliated in about-face polarity ,the about-face polarity indicator red LED D5 glows.When the charging action is activity on the array charging indicator blooming LED D4 glows.
L200 Battery charger schema

Notes.

• The schema can be assembled on a good quality PCB or common board.

• The values of R2 & R3 can be obtained from the equation,

(R2//R3) =( V5-2)/(Io).

Where V5 is the charging voltage (voltage at pin 5) and Io is the charging current.

• The POT R8 can be used for fine adjustments of charging current.

• If battery is connected in reverse polarity the RED LED will glow.

• When the charging is going on the GREEN LED will glow.

• The rectified input voltage to the charger can be 18V.

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