Portable Solar Power Inverter

A compact and portable 12V solar power inverter circuit that will keep away darkness. This tried and tested design converts 12V DC from the storage battery of any solar power system to 230V AC that is enough to power a number of energy saving CFLs. Just feed 12V DC input through input jack J1 (with right polarity) and flip switch S1 to ON position!

The solar powered inverter circuit, optimised for CFL loads, uses IC CD4047B (IC1) as a freerunning astable oscillator. Capacitor C2 and resistor R2 are timing components. The pulse repetition rate of IC1 is determined by the value of 4.4xC2xR2. IC1 generates cmplementary squarewave signals at its output pins 10 and 11. Power Mosfets T1 and T2 serve as drivers for the high-voltage generator,realised using step-up transformer (X1).

Note that an ordinary (AC 230V to 12-0-12/5Amp) step-down transformer is here used for reverse function (step-up) and its output is available at AC mains outlet J2. You can light up two to four low wattage (ie 11W at AC 230V) ready-made Compact Flourescent Lamps (CFLs) using this portable solar power inverter circuit. Two small, independent heatsinks are necessary for T1 and T2. Finally, you can try an AC 230V to 9-0-9/5Amp rated transformer as X1.

12V Solar Power Inverter Circuit Schematic

12v solar power inverter circuit diagram


Join the conversation!

Error! Please fill all fields.
  • Prince

    Please I need a simple circuit that will
    delay my relay change over circuit to
    charge, to prevent current inrush because
    I used the same transformer for charging
    and it burns my fet went charge current
    come in. Please I really need it

  • Rajesh Patel

    For hobby to about solar panel Inverter

  • justice

    Pls sir, can I use the dc to ac inventer only ?because I have no access to electricity at where I stays.

  • shahzad

    hi sir

    i need a 1500 watts dc at ac 220v inverter can you tell me how i buy bkz i search in internet there are diffrent prises i don’t know witch is best and low cosat if you have any one send me links thanks

  • balaji

    sir can you pls tell me what is the current rating of the step up transformer used 12/230 v. pls tell me more detail about that transformer. pls.

  • Mostafa

    Hi dear friend
    kindly I try to assembled this circuit for my college project but never I get reply from this circuit
    Please let me know if you done any change in this circuit to get result and if it possible please let me have the detail in my email.
    I would be appreciate if you can help me

  • Khushboo Priya

    dear sir
    I want a lot more information regarding the project and it would be very kind of you if you provide me a report on it because i want to implement the circuit and for this i need my teachers approval and this would only be possible if u provide me some more information about it.
    Thank you.

  • Retheesh

    Dear all,
    How can be calculate turns ratio of step up transformer 12 V- 220 V ,how can be decide the gauge of primary and secondary coil ,and how we decide the size of core? any body know, pls help me..

  • gantadileepkumar

    Dear sir,

    the circuit is very nice, I have a doubt that how to identify the phase and neutral terminals of the transformer,I would like to connect the system to my home through inverter wiring.

    Thanking you sir,

  • claver99

    I like its so cool,but i have two question (1)how much
    watts does it put out? (2)for how long can it run?

    • lam

      can i use hcf4047be instead of cd4047b

    • Krokkenoster

      It depends solely on the size of your battery and its state of charge You can only get a little less than what you put in . Put a thermal switch on your heat sink to prevent the “cooking” of your circuit You must just interrupt the power to the I.C. Your battery capacity is calculated normally OVER TWENTY HOURS for lead acid or car type batteries Gel type can deliver more current for the same package but they do not like to be standing completely discharge. Wet types that can be topped up do have a longer life amount of being charged and discharged cycles.

Looking for the latest from TI?