Monday, August 24, 2015

Circuit Schematic Simple Solar Battery Charger using LM338 IC

Eltronicschool. - Another solar charger battery charger circuit is like in Figure 1 below. (Read also: Circuit Schematic 12V LDO Solar Charge Controller using MOSFET).

As we know that there are many circuit schematic designed using solar panel for many application. One application is to charge a battery specially recharge battery. In here we also will give you specific circuit schematic using solar panel for charging a battery simply using linear IC 338.

Circuit schematic

Component Parts
  1. Solar Panel
  2. BC547
  3. Resistors
  4. LM338

Circuit schematic like in figure 1 above is Circuit Schematic Simple Solar Battery Charger using LM338 IC. According Homemade-circuits site describe that The circuit diagram shows a simple set up using the IC LM 338 which has been configured in its standard regulated power supply mode.

The specialty of the design is that it incorporates a current control feature also. It means that, if the current tends to increase at the input, which might normally take place when the sun ray intensity increases proportionately, the voltage of the charger drops proportionately, pulling down the current back to the specified rating.

As we can see in the diagram, the collector/emitter of the  transistor BC547 is connected across the ADJ and the ground, it becomes responsible for initiating the current control actions.

As the input current rises, the battery starts drawing more current, this build up a voltage across R3 which is translated into a corresponding base drive for the transistor.

The transistor conducts and corrects the voltage via the C LM338, so that the current rate gets adjusted as per the safe requirements of the battery.

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