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

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
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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.

Don’t forget to watch the demonstration video at the bottom of this article. I also recommend you to have a look into our latest SG3525 based inverter schematic.

Also Read:

Circuit diagram of DC to AC Inverter Circuit

Simple+low+power+inverter+(12V+DC+to+230V+or+110V+AC)+Circuit+diagram+using+CD4047+and+IRFZ44+power+MOSFET Simple low power Inverter Circuit (12V DC to 230V or 110V AC) diagram using CD4047 and IRFZ44 power MOSFET
(Click on the image for enlarged view)

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

Pin out of IRFZ44 and CD4047 IC

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

  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?

  2. 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)

    • 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.

    • 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.

    • 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.

  3. 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?

    • Hi Mahesh
      Time is depend on the battery capacity and load
      when use 11W CFL with 7 AH will give ideally it work for 7 hour ,but it reduce due to losses.

  4. 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”.

    • 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.

  5. 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

    • 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.

    • 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.

    • It acts as a Switching component. It will pass current to the output transformer in a rate of 50Hz hence producing 50Hz AC signal.

  6. Dear sir, can I use a 6V/4.5Ah battery?What changes I have to do with this circuit and what will be the back up time if I use it for a modem?

  7. Dear sir,
    How to connect this circuit with the charging circuit you mentioned above??? Is there any problem with doing charging and using the inverter circuit at the same time…

  8. Can you provide us with the schematic diagram of the connection of 6 MOSFET? I’ve been able to create this circuit and its 100% working. I even use 5v 2A charger as input and I been able to light up a 13watt cfl. I would like to light up at least 10ea of 13watts cfl without changing the 5a transformer, Is there anyway i could do this? I use IRF3205 MOSFET. please help me on this.

  9. sir ,
    please.. can u tell me the output frequency of ic4096?
    & wat is specific operation of mosfets?
    &mosfets may generally heat, ,, but u have not used any Heatsinks. . y?
    i was more intrested to do this as mini project..
    please help me….

  10. Sir can i use 12 volt 100 amp battery with this circuit? is higher current of battery affect the circuit?
    i want 500w inverter by this circuit if i connect more mosfet in parallel and transformer changed then can in this circuit work?

  11. hallo
    ur circuit is really helpful ,everything works just fine,
    i wonder how much watts does the circuit produce?
    and how can i increase the watts so i can power big things?

  12. Sir i have no battery for do this experiment. so i using stepdown 12-0-12/500ma transformer and converted into dc. this dc apply to the circuit is working or not….

  13. Why do i get short circuit?

    Ive checked my pcb by using connectivity test. And nothing is wrong on my ckt. But when i tap it into 12v DC battery. I get short circuit and the just sparks.

    • Hi Swamy,
      The price of electronics components may vary according to different locations. We had explained the components details in the post. Please note all components and inquire in any Electronics components retail shops.

  14. Sir i want to use a 40watt load on this circuit can you please tell me what capacity of transformer can be used and i will use12v 7 ah battery and i need the backup for atleast 2andhalf hours please help me out sir.

  15. Sir, i make this project but it can only produce 110v.how i will get 230 v please could u reply as soon as possiable

    • Hi hardik
      It will reduce efficiency, base current of these power transistors are high so it require extra driving transistors.

  16. hello sir,
    i assembled the circuit on a breadboard and got the required output of 12v ac near the primary of transformer. but when i connect the transformer with the load i am getting the voltage of 70v. why does the voltage decrease when connected to the load?

    • Hi Rfiz
      You must use transformer of current ratting >5A and connect load of 60watt maximum, to increase power use high current transformers.

  17. i used a transformer of current rating 2A and the load that i connected was a 15w bulb. Why did the voltage reduce to 70v on the secondary side of the transformer?

  18. sir I made the circuit and the circuit gives 12v ac output put aftr connecting transformer its not giving me 230v output

  19. Hi sir..can i use 12-0-12. 3A transformer and dry cell instead of lead acid battery..or rectifier as an dc input..please reply me fast..

  20. Hello Sir, I have just bought the required components of above circuits :)
    But I have doubt will it work or not ,
    I have bought Transformer 12-0-12 V with 2 amp for Inverter, and separately bought a transformer of 15-0-15 V with 1 amp stands. Will it work ?
    I want to know that the purpose of Potentiometer in Charger ??? What does it purpose ??

  21. Can i build this circuit in any software?? I tried in multisim but i cant find CD4047 ic anywhere. Can you tell me in which software i can find ic CD4047. Please i need this badly..

  22. I am connecting the multimeter terminals to the battery while charging but buzzer doesn’t stop beeping and LED not glowing but while charging the terminals of the battery it is giving 12.4 v (charging in progress) and potentiometer doesn’t take any effect not even output voltage effect kindly help me.
    i am using 12V 30amp battery and transformer rating 15-0-15 (1 amp)

  23. if i want to use 6V battery what other modifications will i need to do, other than changing the transformer to one with a 6V secondary,

  24. Hi,
    First of all, thank you for the circuit. I wish to know what should I do with my circuit so I can receive 110Vac – 100W at the output of the inverter. Should I add more mosfets? Or should I change the transformer? Which option is cheaper? I am using a car battery (12v and about 50Ah).
    Thank you!

  25. Sir can i use 6v 4.5ah battery?what changes to be done in the circuit by using 6v 4.5ah battery?how much output can i get using 6v 4.5ah battery?

  26. Hello sir,
    i am yogendra. I have made that circuit on breadboard. Initially circuit is working well but after some time later when i restarts circuit this is not working. Sir
    Please give me suggestions.

    • what kind of battery u are using ,i mean i have handled this kind of problems before .i thing it is due to inrush current

  27. for which value of R1 , and R2 and c1 i will get 50HZ … how to calculate frequency for cd4947 ic’s …….. can i use irf540n mosfet

  28. Hello sir iam sumesh i have made that circuit on bread board . Circuit is not working. Over heated ic and wire

      • yogandra if u are using batteries with greater ah like 20ah or more ,the circuit posted above is sensitive to it because of inrush current wit damages gate terminal of mosfets .to avoid this their are many ways .if you are interested i will suggest you

  29. Dear Sir, I want to use this circuit for window energizer. Using 6V4.5 A battery, how long the battery will last?

  30. i wana convert 220 volt ac into 24 volt dc… what should i do.. i have checked on the internet it is not available..

  31. Can i use this mosfets type(RF50N06) connected to make up to 500W inverter and with what transformer current rating

  32. hi admin
    i have 500 watt transformer (12-0-12/220v).i get it from burned inverter.
    and i have irfz48…and ic cd4060.how to connect them to get the 500 watt.
    thank you.

  33. Hello! I’m too putting this sircuit in use but i’m gonna make it last about 500 watts. The problem is that i have to use more mosfets, but how exactly do i put them in parallel (picture)? Does the load effect the frequiency while in use? Witch resistors does effect the frequency? And lastly how do i connect 12-230 transformer wich has no ground (12v mains two wires, 230 secondary two wires)? Thanks!

  34. hi sir..
    i want to use this circuit for my car audio system ( home theater used in my home)

    will it work fine..?

    and please tell me 2A,12-0-12v transformr is capable for drive it..? i dont know how much power (watts) requre for my home theater..

    it is a 5.1-8inch sub system

    plz tell me…

  35. Greetings sir,
    i am really interested to build this circuit, but my problem is that i cannot find the MOSFETS, can i use a bipolar transistor such as the common 2n3055, dear sir my email address is (dnkwenti @ gmail.com), sir i will patiently wait for a response, via my email will be more better, thanks

  36. Howe many amp’s battery were there for i/p? please reply me as soon as possible. inform me battery specifications.

  37. I build circuit as per your schematic on bread board. But it will not get 220Vac at o/p. it is varying 0 – 185VAC. But i am getting primary side 12Vac. i am using 12v-0-12v/5A transformer. when i connect load(60w) primary side voltage also decreasing to 2Vac. wht will be the reason. please reply immediately

  38. hi sir,
    we were asked to use 9v dc for supply, and we should have 125w…
    what will i do? can i still use this circuit by modifying some of its components?

  39. Hey,
    I hear a himming sound in the transformer wen I switch it on. And the voltage at the output keepss fluctuating so fast but its working..I need a much stable output

  40. I have a 110 VDC to 230 VAC inverter kindly suggest the circuit to implement 12VDC to 230VDC using same inverter 110 VDC to 230 VAC

  41. hi
    i have made this inverter circuit but its not working i dont know where is the problem in the circuit. i am getting 12v at the transformer secondary side ( 12-0-12) but not getting 230v at the primary side. i am using a centre tapped 230v – 12v 1.5amp transformer. can you please suggest me where would i find the fault?

  42. Once i set the output frequency to 50Hz
    What about the waveforms…. Is the output pure sinewave when observed under CRO ?

    Need a pure sinewave for a project i am working with so if you can help me out.

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