# Solar Based Multipurpose Charger Circuit

Here is an ideal solution to harvest Solar energy for charging purpose. This charger can replenish almost all types of batteries including Mobile phone battery. It uses a Solar Module to convert light energy into electrical energy

## Solar Charger Circuit Schematic

The circuit is self explanatory. A 12 volt 5 Watt solar panel is used as the source of current. The cells in the panel are made up of semiconductor material which transforms light energy into electrical energy. When the sunlight is maximum, the solar module can generate around 16.5 volts at 400 mA. This current is used to charge the battery. Diode D1 allows current into three regulator ICs to provide regulated voltage to the load. IC1 7812 gives 12 volts and 400 mA current to charge a Lead Acid battery.

The battery can be connected to point C and ground. IC2 7806 gives regulated 6 volts to charge NiCd battery. Resistor R3 restricts the charging current. IC3 7805 provides regulated 5 volts to charge all types of Mobile phone batteries which are rated at 3.6 volts. Resistor R2 restricts charging current to a safer level. Point A can also used to charge Lithium ion and NiMh batteries. High value capacitors C1 and C2 act as current buffers so that a short duration interruption in current flow from the panel will not affect the charging process. Red LED indicates the charging process.

##### Related Tutorials

• ayesha

isthere any alternative of IN5204 IN 5204 diode

• ayesha

Thanks a lot sir for replying actually i m doing my project will u plz snd me the details……….

I need ur help

• Jim Keith

• ayesha

what is the opposite of IN 5204 diode because could not found it

• Marlo A

sir. what do i need to change if i have 10 watts/21 volts panel to charge a 6 volt 14 aH battery..

what transistor, resistor, capacitor I need to change in this circuit, please send me some computation if you have I really need this for my project..

this circuit help me alot. i also find this kind of circuit on emergency light.

• tony

Sir you can help me to make solar mobile charger w battery back up pls. Send me a duagram and part list sir.

• krokkenoster

Ghilmar
You may use any 3amp 100volt diode The current and voltage rating may be higher

• Ghilmar

hello there sir.

just want to ask about the circuit what could be the possible voltage for the electrolytic capacitor. we also couldn’t find any IN 5204 component, even in internet basis. is it existing?

• Eka

Very nice circuit, thanks

• RAMAN

Dear sir,

were i can get solar 10 amps MPPT charge control pcb and drawing

• smb

sir the two resistors 47R what it means?

• gulshan

i want to make this project so u can please tell me how can i make this and can send me its manual on mail id and bolck diagram plzzz sir its very very very urgent i need manual and its over all diagram and ways to make this projectt

Looking for the latest from TI?