Sinewave Inverter

Dec 08, 2011
The post explains a versatile pure sine wave inverter circuit which is based on PWM from 555 IC and couple of opamps.
 
 
Oct 01, 2013
Referring to the below shown IC 4047 pure sine wave inverer circuit (designed by me), we can see two identical IC 555 stages, wherein the left section functions as a current controlled sawtooth generator while the right hand ...
 
 
Apr 27, 2013
The post explains a simple pure sine wave inverter circuit design which can be easily built at home.
 
 
May 24, 2012
The post describes a neat 1000watt or 1kva pure sine wave inverter circuit.
 
 
 
Dec 27, 2012
The post explains a simple pure sine wave inverter circuit using the IC556 and some other active electronic stages.
 
 
Apr 01, 2013
The post explains how to modify an existing square wave inverter to a sine wave equivalent inverter circuit design through simpler means.
 
 
Jan 24, 2013
The following article which discusses a 300 watt pure sine wave inverter circuit, is a modified version of one of my previous posts, and was submitted to me by Mr. Marcelin. Let's learn more about the implementations.
 
 
Sep 06, 2012
The post explains probably the most easiest 400 watt sine wave inverter circuit, which requires lowest number of components and yet is able to produce optimum results. The circuit was requested by one of the active ...
 
 
 
Oct 12, 2013
The following post discusses a simple modified sine wave inverter circuit with waveform images, confirming the credibility of the design. The concept was designed by me, the waveform being confirmed and submitted by Mr.
 
 
Feb 12, 2012
The content will throw some light regarding the concept and making of a pure sine wave inverter at home.
 
 
Feb 12, 2012
The circuit provided in this article shows you a simple way of building a useful liitle inverter that's easy to build and yet provides the features of a pure sine wave inverter. The circuit can be easily modified for getting higher ...
 
 
Feb 12, 2012
You can simply convert a powerful audio amplifier into a pure sine wave inverter, how? Read more.
 
 
 
Jan 05, 2013
Let's learn more about the request and the circuit functioning. The request: "hello sir Swagatam, i will be grateful if you can help me on Pure Sine Wave Inverter circuit using ic sg3525 with mosfet and a center tap transformer."
 
 
Apr 20, 2012
The post explains how to make a digital pure sine wave inverter circuit.
 
 
Feb 12, 2012
If you are looking for a simple modified sine wave power inverter circuit design to build, then perhaps you have hit the bull's eye here. The present article very explicitly deals with a circuit idea of the same that's astonishingly ...
 
 
Feb 12, 2012
A very interesting circuit of a modified sine wave inverter is discussed in this article which incorporates just ordinary transistors for the proposed implementations. The use of transistors typically makes the circuit easier to ...
 
 
 
Feb 12, 2012
The article is about a 200 watt modified sine wave inverter circuit which can be constructed at home.
 
 
Feb 12, 2012
A PWM controlled 500 watts modified sine wave inverter has been discussed here, read the whole article for further information.
 
 
Apr 08, 2013
The post explains how to build a H-bridge inverter circuit using four N channel mosfets. The circuit is a modified sine wave design.
 
 
Oct 24, 2013
The post explains a simple 3kva modified sine wave inverter circuit which is pwm controlled using IC 555 and RMS controlled.
 
 
 
Jun 09, 2013
The post explains the method of converting a 4047 inverter into a modified sine wave inverter circuit.
 
 
May 16, 2012
One of the innovative methods of generating modified sine pulses designed by me, was built and tested by Mr. Ali Rexhepi, let's learn how he went about the entire procedure. Before that first have a look at the circuit diagram ...
 
 
May 01, 2012
The H-bridge configuration has another great advantage with respect to the making of modified sine wave inverters. The special arrangement of the devices make it possible for driving the devices through two individual signal ...
 
Oct 23, 2012
The post explains an H-bridge modified sine wave inverter circuit which is perhaps the simplest of all the designs so far.
 
 

51 comments:

  1. hi m janvi
    How To Make a Cell Phone Jammer?

    ReplyDelete
    Replies
    1. I will try to cover this topic soon in my blog.

      Delete
  2. sir how to increase the load regulation in modified sinewave inverter (ic 4017 is used ) ..? actually i am getting 0.90a , 250v output but when i put a 100w load voltage will be reduced seviourly but load works fine , but the problem is i cant connect another 60w load simeltaneously??

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    Replies
    1. please show me the circuit diagram which you have employed...i'll try to figure it out.

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    2. i have maild you the driver section of my inverter sir.. because rest of the circuits are same as your design using ic 555 and 1c 4017 (modified sine)..

      Delete
  3. sir , what is the maximum current dat can be taken by irf 540 mosfet at vds = 24v ?? according to its datasheet it is 5 amps , is it true??

    ReplyDelete
    Replies
    1. Upto 30 amps...you can refer to the datasheet here:

      http://homemadecircuitsandschematics.blogspot.in/2013/01/irf540n-mosfet-specifications-datasheet.html

      Delete
  4. hi Mr. Swagatam im new here i want to know how to bile a 3000 watt inverter simple because i don't know enough about electronic but im very exciting about it & i want to know how to build a 3000 watt transformer (enough small but powerful) please help me.

    ReplyDelete
    Replies
    1. Hi Rashel,
      you should begin with smaller designs then upgrade them into higher wattage types, I have discussed many inverter designs in this blog, you can select any one from them and start your learning course.

      Delete
  5. Hi Swagatam

    Here is a schematic of a simple sine-wave oscillator, which oscillates between 0-10v at 50Hz. I was just wondering if we can use a step-up transformer to get 220v?

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  6. Sorry, I forgot to attach the schematic. Here it is:

    https://dl.dropboxusercontent.com/u/20969135/Sine-wave%20oscillator.gif

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    Replies
    1. Hi Abu-Hafss,

      The circuit will not handle higher amps and will require an output stage for amplifying amps to the transformer. Moreover this circuit won't generate both the AC half cycles, which makes it ineffective as an inverter.

      Delete
  7. sir my task was ups as final year project.. but i have made an inverter yet with h bridge of irf3205 its output is a rectangular wave with +12,-12 V 24peaktopeak ... now plz guide me what should i do next for making it modified sine wave and stepping up and filtering :(( plz i need urgent help

    ReplyDelete
    Replies
    1. Show me the circuit diagram, only then I would be able to say anything.

      upload it to any image sharing site and give me the link.

      Delete
    2. Ok i m messaging u on ur fb profile ... plzzz plzzz help me ssooon

      Delete
  8. Hi Swagatam,I want to know that, in my home there is a pure sine wave inverter with a battery.I know how to convert 12 v DC to 230 v AC but I don't know the reverse or charging process that means 230 v AC to charge the 12 v battery.can you tell me the same MOSFET H-bridge used for charging or separate charger used when battery is drained at rated charging point.can you send me the details about it.
    email- biswajitdas49@gmail.com

    ReplyDelete
    Replies
    1. Hi Biswajit, you can charger the battery with a separate battery charger circuit through an external voltage source such as from your home AC mains or a solar panel.

      I have published many cool battery charger circuits in this blog, you can select any one from this list:

      http://homemadecircuitsandschematics.blogspot.in/p/battery-chargers.html

      Delete
    2. HI Swagatam,THANKS for your reply.I know your every circuit is awesome in this field.
      I want to know, is there any "possibilities or the process" to use the same mosfet which is used in H-bridge to make dc to ac can be used for battery charging(ac to dc) process in the same circuit board using microcontroller?

      Delete
    3. Hi Biswajit,

      I am not good with microcontrollers so cannot suggest you anything useful on this.

      Delete
  9. Hello sir,can you help me with building of LCD display for a mini fuel dispenser?

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    Replies
    1. Hello Segun, Please provide an elaborate description of your requirement.

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  10. sir , max Ids of a mosfet decreases as the Vds increases ?? as per some graphs in mosfet datasheet .. ? also practically mosfet burnt as current increased a value shown in datasheet .. ? (irf 540 , max ids = around 5A at vds=24v ) ?

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    Replies
    1. Hi Vishwas, that's impossible, there might be something incorrect in your circuit. You can test the mosfet separately using a, say 20 amp 50V lamp or any other value below the specified rating, the mosfet will not burn..

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  11. oh ok.. so we can use 8 amp 500v mosfet in a 340v h bridge ciruit with a load of 2 amp safely??

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  12. ok thank u.. sir i have mailed u some graphs fom mosfet datasheet can you analyse it and tell me what they mean ?

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    Replies
    1. The left graph shows the safe operating area of the mosfet. The y-axis shows the max current that should not exceed over the dotted line on the top. The x-axis shows the max voltage that should not exceed beyond the thick dotted line at the right side of the graph, while the Vds voltage which lies on the right hand side of the thick dotted line can be applied only as a short pulse whose duration is indicated along the vertical thick dotted line.


      The right hand side graph simply shows the current/voltage response of the mosfet across its drain/source when Vgs or gate voltage = 10V

      Delete
  13. ok.. now now i have some quetions , irf 840 mosfet is rated as 8amps , 500v , but when we observe the graph,,, at vds=500v , max allowable DC current is about 0.3 amps(FROM THE GRAPH) , so can i say that 8 amps can be passed in pulse but not continuesly , continuos current of only 0.3 amps can be passed??

    thank you for your time,

    ReplyDelete
    Replies
    1. No, may be you are reading the graph wrongly, it doesn't show anything like that,
      the thick vertical line at the right shows the voltage limit after which it could applied only as pulsed voltage as given beside the line.
      The left slope indicates the current response with respect to voltage, whereas the upper white space indicates the danger zone or the restricted area for the current.

      Delete
    2. ...8 amps can be passed continuously albeit with heasink on the moset

      Delete
  14. can we use am radio ferrite core for high frequency inverter purpose? arround 250 W?

    ReplyDelete
    Replies
    1. it won't produce efficient results, because the core should be a looped type as in E-cores or in torroidal cores for getting efficient outputs....

      Delete
  15. Hi Mr. Swagatam,

    i have a defective 2kva ups, i want to salvage the transformer (48v no center tap 110v ouput), please make me a design using this transformer, and i have also mosfet ifr3205, incorporate this if possible...

    thank a lot.

    Ariel.

    ReplyDelete
    Replies
    1. Hi Mr. Ariel,

      You can try the following design:

      http://homemadecircuitsandschematics.blogspot.in/2014/01/simplest-full-bridge-inverter-circuit.html

      Delete
    2. Hi Mr. Swagatam,

      Thank you and i appreciate your design, but IC IRS2453(1)D can't found in electronic shop.

      Can you please make an alternative circuit using NE555 and 4017, or 4060 for oscillator driver..
      option 1 using 4 n-channel mosfet, option 2 using 2 n-channel and 2 p-channel mosfet..

      Thank you for your immediate response.

      Thanks a lot

      Ariel

      Delete
    3. Hi Mr. Ariel,

      The circuit that I have referred is a professionally designed circuit and will start working without any hassles, other modified designs may not be so reliable,
      if you insist, the following circuit may be tried, which has been designed by me

      http://homemadecircuitsandschematics.blogspot.in/2013/04/h-bridge-inverter-circuit-using-4-n.html

      Delete
    4. Hi Mr. Swagatam,

      Thank you for your immediate response. By the way, What type of regulator to be used to supply the VCC of IC 4049 and 4017? my Battery Voltage is 48v in series, or maybe I use one of the series battery so that i can feed 12v to IC and 48v is feed to mosfet and the ground are common. My existing mosfet is IRF3205, is suitable for this circuit?.. What is the oscillating frequency so that i can produce 60hz from the output Transformer?

      Thanks a lot Mr. Swagatam,

      Regards

      Ariel

      Delete
    5. Hi Mr. Ariel,

      You can use a 7812 IC for powering the ICs
      48V will work for the mosfets separately.
      IRf3205 is OK.
      oscillating frequency could be 600Hz at pin14 of 4017

      Delete
    6. Hi Mr. Swagatam,

      The circuit is work fine on 12v dc supply. But when i connect on 48 volts dc supply, the pnp transistors (bc557) blows out. Please help me to trace what happen.. is this exceed the Vec of BC557 because the bootstrapping network?

      Thanks a lot Mr. Swagatam,

      Regards

      Ariel

      Delete
    7. Hi Ariel,

      the 4049 IC will surely need 12V supply and not 48V....so you must apply the 4049 IC also with 12V from 7812 IC.

      48V will only go to the high side mosfet drains and must be suitably dropped before applyuing to the ICs.

      and yes 7812 cannot be used with 48V since these ICs can handle not more than 35V input.

      You can use a BC546 as an emitter follower with 12V zeer at base for getting the required 12V supply.

      Delete
    8. Hi Mr. Swagatam,

      I just want to clarify that the diode (1n4148) across the positive terminal to the output of bootstrapping network. The anode terminal is connected directly to the battery even if the supply is 48 volts?
      And also the capacitor is connected directly to the ground terminal.

      Thanks a lot Mr. Swagatam

      Regards

      Ariel

      Delete
    9. Hi Ariel,

      I have updated the discussed diagram appropriately, you may refer the same for getting a clearer view.

      Delete
  16. hi,
    I hope you watched the channel- lasersaber.
    Well, I wanted to know a bit of trade language in electronics(how we ask a components name in shop).
    I went to a shop and asked a transformer "120v-12v, 40va transformer(stepdown)". The shop keeper asked what does va means??
    I told him "Volt-ampere", then he said, he dont know.
    So can you say what exactly i should ask for the above mentioned transformer in trade language.??????

    ReplyDelete
    Replies
    1. Hi,
      If the CFL is rated at 12 watts it WILL consume 12 watts for the specified illumination, if anybody claims to produce the same illumination at a lower supply power the person may be completely faking....there are many such fake claims presented on Youtube so please don't trust them.

      Tell the shopkeeper that you want a 120V, 12V/3 amp transformer he would now surely understand

      Delete
    2. Helped me a lot,

      thanks,
      with regards.

      Delete
  17. Hi Mr. Swagatam,
    i hav 3055 tr old inverter. it can fractuate output in Changeover time..how to solve this problem...??

    ReplyDelete
    Replies
    1. Hi Sovan, I am sorry I did not understand your requirement, please explain it more clearly.

      Delete
  18. Hi sir,
    I build an inverter using ic 3524, the inverter is working fine on some appliance but won't power a small standing fan and a small clipper. Pls what can I do?
    Thanks in advance

    ReplyDelete
    Replies
    1. Hi Kolley, the fan wattage could be beyond the capacity of the inverter power that's why it's not able to move it...you may have to increase the battery AH and/or the transformer amps for upgrading the inverter range

      Delete

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Readers are advised to proceed with the construction of the presented circuits only after understanding the concepts from the core. Not adhering to this can lead to failures and frustrations.