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    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

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    57 Responses to "Portable Solar Power Inverter"

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    1. How can i adjust the output frequency of IC1?May i use a 470K preset in R2 postion?

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    2. T.K.Hareendran says: on October 7, 2010 at 2:17 pm

      Why not?You can use a 470K Lin trimpot as R2 to vary & set The Fosc.Thanks for your feedback!

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    3. what is the maximum power ouput watts?

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    4. d sreenu says: on January 6, 2011 at 7:59 am

      what is the cost estimated for designing this equipment

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    5. Kartik Joshi says: on March 3, 2011 at 2:16 pm

      I need some help regarding this project.

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    6. ALISHA DEKATE says: on March 12, 2011 at 5:26 am

      SIR I WANT TO KNOW WHAT IS THE INPUT HERE..i.e. DO WE REQUIRE ANY SOLAR POWER SYSTEM???????? OR ANY BATTERY WHICH IS CHARGED BY SOLAR ENERGY?????

      Like or Dislike: Thumb up 0 Thumb down 0

    7. DC 12V from any source can be used here.I prefer,a 12V SMF Battery charged through a solar power unit.

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    8. alisha dekate says: on March 12, 2011 at 8:11 am

      then why it is so called as SOLAR POWER INVERTER?????????
      CAN U PLZ SEND ME THE FULL DETAILS OF THE PROJECT I NEED IT .ITS URGENT.
      HOW MUCH THIS PROJECT COST?

      Like or Dislike: Thumb up 0 Thumb down 0

    9. alisha dekate says: on March 12, 2011 at 8:13 am

      WHAT WILL HAPPEN IF WE REDUCE 12V TO 9V?

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    10. ALISHA DEKATE says: on March 13, 2011 at 3:44 pm

      sir i want to make this project in my college…….put the working is not cleary mention in this thats why i need it…..

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    11. Kartik Joshi says: on April 5, 2011 at 1:24 pm

      Sir, I want to know why dc motor is being used?

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    12. Tutu Zulu says: on April 29, 2011 at 1:03 pm

      Sir, in case I fail to obtain CD4047, what is it’s equivalent?

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    13. sreekanth reddy says: on June 11, 2011 at 10:37 am

      i am having anorganisation.. for inverters i want to meet u personally.. can u sen u r contact details to my mail.. this si my number.. +91-9966466459

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    14. sir i have simple & supper musqitio replient.thanks

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    15. please elobrate this ???????????

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    16. sir
      what r the advantage and disadvantage??
      what r the limitation of this inverter?

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      • In My opinion, the advantage is showing you what can be done with simple parts to make a useful conversion of sunlight to electricity higher then the value of the solar panel.
        The limitation is the power obtainable. Components have limitation. the design is simple but all circuits have limitations.

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      • This is a very simple and straight forward circuit. However it might need some touch ups here and there for example, the output waveform is a square (one with lots of harmonics. It is advisable to play around with the waveform until you get something closer to a sine wave though its hard to achieve
        .

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    17. SHANTHAKUMAR says: on December 31, 2011 at 11:35 am

      SIR CAN I USE THIS FOR LAPTOP CHARGER (LAPTOP)

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      • unless you allready have the Laptop powersupply, I would say no. the output is too high to directly connect into a low voltage laptop. Better to convert solar panel voltage to proper voltage directly for laptop.

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    18. sir can i use this inverter for laptop charger after converting 12v to 230v?

      Like or Dislike: Thumb up 0 Thumb down 0

    19. if i cant obtain the mosfet IRFZ44, any other equivalent are there.

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    20. maxwellalbert says: on July 1, 2012 at 1:42 pm

      very usefull

      Like or Dislike: Thumb up 0 Thumb down 0

    21. hello sir,
      i want know more about (x1)transformer

      Like or Dislike: Thumb up 0 Thumb down 0

    22. Sen K. Thomas says: on July 4, 2012 at 8:17 pm

      hello sir.
      Is it possible to club your solar charging ckt with portable solar inverter ckt ?
      May I know the cost as well as rating of solar panel and SMF battery used.

      Like or Dislike: Thumb up 0 Thumb down 0

    23. HOW MUCH IS THE OUTPUT POWER OF THIS INVERTER?

      Like or Dislike: Thumb up 0 Thumb down 0

    24. Darktempt says: on July 23, 2012 at 11:54 am

      i love reading others comment… can u please answer there question so i can continue reading??

      hope to work on it someday…
      i love eLectronics

      Like or Dislike: Thumb up 0 Thumb down 0

    25. sikander says: on July 23, 2012 at 12:56 pm

      please tell me alternative of CD4047B

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    26. sir,can we attatch a voltage regulater along with this circuit?i mean a 2 in 1 circuit

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    27. sir,pls reply……what is the cost of the solar battery used here?

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    28. an you please modify this circuit using a 6vinput?

      Like or Dislike: Thumb up 0 Thumb down 0

    29. abinaya says: on July 29, 2012 at 10:09 am

      sir can we combine photodiodes in harnessing solar power .it is used to convert light to current .if so how can i combine it with ur ckt

      Like or Dislike: Thumb up 0 Thumb down 0

    30. sir please give me synopsis repot
      my project is design of solar power inverter.

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    31. sir please give me solar power inverter components and atlab ckt and pcb ckt and 12&24 &220volt my email id pe

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    32. Mohamed Rafi says: on November 18, 2012 at 6:13 pm

      Dear Sir,

      Very simple effective diagram. I Have one doubt. How much output Maximum Watts?

      Thanks

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    33. Some sound equipment will be noisy if driven by this inverter. The output is square. Check the spec sheet of the transistors to see the power that can be drawn W=IE but remember to give room for losses

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    34. djsa18 says: on February 4, 2013 at 11:13 pm
        member

      good afternoon, could someone please help me with the simulation of a multi-phase multilevel inverter inverter 3 stages, either in Matlab, Multisim, Proteus or PSIM .. Please reply The data are: 120V output Vrms Maximum power for a fourth engine hp The input voltage can be 24 or 40 or whatever it easier for the simulation Maximum current of 2A

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    35. atanley says: on March 8, 2013 at 12:47 am
        member

      Please what will be the maximum power output?thanks

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    36. djsa18 says: on March 8, 2013 at 4:24 am
        member

      200W power is equal to 1/4 hp. help me please

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    37. Builded. Working fine.
      The irfz’s need silk, and isolating.
      But Iam take 42 amps (from dc side), and 236V from transformer sekunder side.
      Using with solar panel (as a grid inverter).
      Job done.

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    38. Thanks for the feedback!

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    39. Rashid Ansari says: on July 30, 2013 at 10:41 am

      Sir, if i want to run a 150W, 220v fan by this inverter, what changing should we do in this circuit??
      Thanks for your help.

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    40. maheshjshetty says: on August 16, 2013 at 5:48 pm
        member

      if we put 1 11w cfl light at the output,what is the maximum time of burning?

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    41. How will I get solar cell

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    42. 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?

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      • 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.

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    43. gantadileepkumar says: on November 9, 2013 at 5:21 pm

      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,

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    44. 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..

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    45. Khushboo Priya says: on January 20, 2014 at 5:50 pm

      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.

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    46. Mostafa says: on March 9, 2014 at 9:35 pm

      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.
      mostafa.bashiri@gmail.com
      I would be appreciate if you can help me
      Regards
      Mostafa

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    47. 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.

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    48. shahzad says: on March 24, 2014 at 5:51 pm

      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

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

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    50. Rajesh Patel says: on April 8, 2014 at 3:10 pm

      For hobby to about solar panel Inverter

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