Simple low power Inverter Circuit (12V DC to 230V or 110V AC) diagram using CD4047 and IRFZ44 power MOSFET

This simple low power dc to ac inverter (dc to ac converter) circuit converts 12V DC to 230V or 110V AC. By doing simple modification you can also convert 6V DC to 230V AC or 110V AC. It can be used as inverters for home needs to enable light loads (electric bulb, CFL, etc) at the time of electricity failure. You can construct this circuit of simple inverter at a cheap rate with locally available components. Use a 12V rechargeable battery and battery charging circuit for this dc to ac inverter. We have already posted the circuit for battery charger.

Also Read:

Circuit diagram of DC to AC Inverter Circuit

Simple DIY Inverter

(Click on the image for enlarged view)

Components required for DC to AC Inverter

  1. IC CD4047
  2. Resistors (1K, 18K, 100Ω- 0.5W x 2)
  3. Capacitor (0.22µF)
  4. 12V rechargeable battery
  5. Battery charger circuit(Published before)
  6. IRFZ44 MOSFET x 2
  7. Step Down Transformer (230V primary 12V-0-12V, 5A secondary) (110V to 12V-0-12V, 5A can also be used) NB:- Transformer connection inverted 

Working of DC to AC Inverter

  • You must use a battery and battery charger to implement this inverter circuit. Battery charging circuit is described in our previous post.
  • The operating frequency of astable multivibrator is set to 50Hz.
  • The power MOSFETs IRFZ44 are directly driven by the Q and Q’ output of CD4047.
  • The power MOSFETs are connected in Push Pull configuration (Power amplifier). The MOSFETs will switch according to the pulse from CD4047 astable multivibrator.
  • Thus an AC voltage is transferred to the primary of transformer; it is stepped up to 230V.
  • The transformer used here is an ordinary step down transformer which is connected in inverted manner. That is, the primary of a 230V to 12V-0-12V step down transformer can be treated as secondary for this inverter project.
  • If you would like to get 110V AC, choose 110V to 12V-0-12V step down transformer in reversed way. (That is primary as secondary and secondary as primary)
  • The inverter output is filtered by capacitor C2.
  • Use suitable heat sinks for MOSFETs.
Here is the tested and verified inverter circuit that I have made, for those who doubt working of the circuit.  ;) 


Pin out of IRFZ44 and CD4047 IC

Ads


48 comments:

  1. if i connect the secondary wires of the transformer to the alternating current what will happen by plugin does the battery get automatically charged or not?

    ReplyDelete
    Replies
    1. Hi,
      No,it not possible to do so, you have to connect separate charger circuit for it, it may damage your circuit.

      Delete
    2. hi,i'm george thong here,from malaysia,may i know the 12v dc can directly connect to the car battery?
      thanks for your info & helping,thank you.

      Delete
  2. AnonymousJune 24, 2013

    I want to build this circuit for a simple application - to drive a small aerator for an extenal fishpond. Later, I will then add a small solar panel.
    When sourcing the resistors I came across a puzzle. Surely, the resistance is a property of the device independant of the voltage rating (within limits). When trying to source the variable resistor (trimmer or potentiometer) one of the specifications is the wattage rating. None of them that I have seen allow a 22k ohm resistance at 12 Volts. Am I being too clever (knowing Ohm's Law)

    ReplyDelete
  3. hii
    i am GAURAV SHETA. this circuit how many watt withstand?? and how many prize of this circuit??

    ReplyDelete
    Replies
    1. Hi GAURAV,
      This circuit can handle 150 watts if 12.5A transformer is used.
      The circuit cost around Rs.190 without transformer. With 5A transformer it can handle 60 Watts.

      Delete
  4. hi admin will the reverse of the transformer not burn the winding?

    ReplyDelete
    Replies
    1. Hi Ronoh,
      It will not burn the winding as output of the inverter is 12V AC.

      Delete
  5. is this circuit really working??? rep as soon as possible?

    ReplyDelete
    Replies
    1. This circuit is 100% tested and verified under i-St@r Lab. Also I have uploaded an image of the inverter that I have made.

      Delete
  6. sir,,is overload affect the circuit?

    ReplyDelete
    Replies
    1. Hi Jithu,

      Overload will damage the MOSFET and it may get burst. As per the above circuit diagram, it can handle only upto 60 watts load. It can be increased upto a maximum of 150 watts if 12.5A transformer is used.

      Delete
  7. AnonymousJuly 30, 2013

    Hi admin, do you know which is the power conversion efficiency with 60W output load?

    ReplyDelete
  8. Sir,can i use 9-0-9,2A Transformer?

    ReplyDelete
    Replies
    1. Hi karunaga,
      Sure you can but power efficiency will be decreased.

      Delete
  9. how can i increase the power up to 500watts

    ReplyDelete
    Replies
    1. Be careful, connect 6 MOSFET in parallel with 500 watts inverter transformer.

      Delete
  10. how long will the 150watt inverter drive 100watt load with the full charged battery

    ReplyDelete
    Replies
    1. Please specify the ah of the battery you are using and next time use your name while commenting for better response.

      Delete
  11. sir may i use this circuit to operate fan????? is this circuit can load fan???? does there any damage in circuit from the fan as load???

    ReplyDelete
    Replies
    1. Hi Parth Patel
      You can use this circuit to operate fan but, Normally fan drawn 75 watts so you should use minimum of 7A transformer, 10A transformer is available.

      Delete
  12. Can you tell me, what is the potentiometer used for? Thanks.

    ReplyDelete
    Replies
    1. Hi Gus.
      Potentiometer is used to set the frequency 50Hz.

      Delete
  13. sir, how long will the 150watt inverter drive 100watt load with the full charged 12volt/75ah battery

    ReplyDelete
  14. what Amps of transformer can be used to get 500watts output

    ReplyDelete
  15. mahesh j shettyAugust 19, 2013

    if i put 11w cfl bulb as load,what is the maximum hour of burning and what is the ah of the battery you have used in this circuit?

    ReplyDelete
  16. Sir my i/p is 230 v and give o/p is increesh step by step (110v,150v,180v,200v,and230v) a it fully atomatic

    ReplyDelete
    Replies
    1. Hi,

      You will have to use tapped transformer for that purpose

      Delete
  17. Hello sir My Self Anand,
    Sir, Can I use 10A transformer to operate "one 18Watt bulb and one Fan"? and how long
    it will drive with this load? and one more thing why you repleced potentiometer with
    resisters?
    and the Battery Rating is "12V,9ah".

    ReplyDelete
    Replies
    1. Hi Anand,
      Nice to see you here. Yes 10A transformer can be used for operating the above mentioned things. With 12V,9Ah battery it can operate for less than 1 hour.

      We have replaced the pot with resistors for simplicity and to reduce the cost.

      Delete
  18. sir,300w transformer using meance any change doing in this circuit.

    ReplyDelete
    Replies
    1. Hi Flying,
      Yes, you will have to make alterations. Number of Mosfets used should be increased.

      Delete
  19. How to simulate the circuit And what is the program use?

    ReplyDelete
  20. in the circuit diagram there is no c2 capacitor

    ReplyDelete
    Replies
    1. Hi Aswin,
      It's not necessary to get output.

      Delete
  21. sir,
    how can i add overload protection to the above circuit?..suppose if i give load above 150w i need the circuit to cutoff the load without damaging the mosfets..plz help me with it...
    thanks in advance
    Eldhose

    ReplyDelete
  22. capaitor 0.22uf howmuch voltage will required?

    ReplyDelete
    Replies
    1. Use 2 ordinary 0.1uf disc capacitors in parallel.

      Delete
  23. pls can u upload 3kv circuit

    ReplyDelete
  24. How do I have to connect the output to obtain 12 volts AC?
    Can I obtain 3 volts AC by charging the circuit with 3 volts DC?
    The same for 16 volts? What would the range limits be?
    Thank you very much,
    Juan

    ReplyDelete
    Replies
    1. Hi,
      1)To obtain 12 volts AC, take output from Vcc and either of the drains of power mosfet after connecting transformer.
      2)Yes you can get 3volts AC like that.
      3)Min 3V and max 18 V
      But keep care to use exact matching transformers accordingly.

      Delete
  25. If the gate input to both mosfets is high, wont it short circuit the primary end of the transformer??

    ReplyDelete
    Replies
    1. Hi Malvika,
      Yes it will short circuit and burst.

      Delete
  26. Hi am ken miles. Can i use any other capacitor apart from a 0.22miro farad capacitor?

    ReplyDelete
    Replies
    1. Use 2 ordinary 0.1uf disc capacitors in parallel.

      Delete
  27. Sir is it possible with 9v battery?
    pls repy its urgent.

    ReplyDelete
    Replies
    1. Hi Adarsh,
      Yes you can use 9v battery, but use 9-0-9 transformer. For better output high capacity batteries(high ah) are required. 9v high ah batteries are not commonly available.

      Delete
  28. hi admin, i need inverter circuit of 3v dc to 9v/12v ac. while i will connect AA battery as 3v source it will charge automatically.plz suggest me.

    ReplyDelete

 

Copyright © 2011 CircuitsGallery| ToS | Privacy Policy |

Contact Us | Write For Us | Advertise on Circuits Gallery | About Us