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    1000W 12V d.c. to 230V a.c. power schematic diagram

    Can someone help me with the circuit diagram of a 1000W, 50Hz, 12v d.c. to a.c. which is practical.

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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Hi,
    Since you say practical, 1000W at 12v is asking too much. You should be trying with 24V at least. Take a look at this (1250VA, 24v):


    Hope this helps.
    Tahmid.

    ---------- Post added at 15:06 ---------- Previous post was at 15:06 ----------

    This is a complete inverter with all protection schemes and battery charger.


    4 members found this post helpful.

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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    hi Tahmid,
    can u please give what Q1 BC547 is doing ( the transistor from gate to ground )


    1 members found this post helpful.

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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Hi,
    It's used to make sure the MOSFETs remain absolutely off during charging as the internal diodes are used, so that there is no short circuit. In the inverter I posted, I've tried without this transistor and instantly the MOSFETs blew off. When I placed this transistor, everything is fine. The MOSFET driver stage, ie, the diodes and transistor, this scheme is used in most inverters in Bangladesh and India as I have seen.

    Hope this helps.
    Tahmid.



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    i have seen this circuit , but in my design there is no transistor like this, mosfet driving directly from 3525 found no problem in past 7 years,

    any difference in pwm mode by using this transistor?



    •   Alt17th December 2010, 18:05

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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    The transistor is used as a protection to the mosfet,normaly the oscilator out put is out of phase with the other, failure to change in phase the transistor conduct and pull down the gate to ground to protect the mosfet from getting damage,3525 has no open collector therefore it can use to drive mosfet directly without any buffer,also the circute Tahmid post is a modified sine output and it's working fine.



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Tahmid,
    as sala mu alay kum, I see your schematic,its good,if have PCB layout with component placement,please post.thanks.



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Tahmid, I appreciate for the circuit, you did it, congrants

    ---------- Post added at 07:01 ---------- Previous post was at 06:59 ----------

    rajudp, can you post your circuit also.



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Tahmid, I luv to try this circuit,but a small part of it I cannot see it very well.
    Please kindly assist.
    Thanks



    •   Alt18th February 2011, 08:08

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  10. #10
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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Hi,
    I will try to upload it again.


    1 members found this post helpful.

    •   Alt18th February 2011, 13:49

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  11. #11
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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Thanks, you are are nice man...



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Thanks Tahmid for the circuit
    Can you please explain what is the function of 4X 1N4148 diodes ZD2,ZD3,ZD4,ZD5 in the base of Q1 BC 547?



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Pls Tahmid, don't to post the circuit....
    Thx

    ---------- Post added at 18:58 ---------- Previous post was at 18:56 ----------

    Pls Tahmid, don't forget to post the circuit....
    Thx



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Please, can any one help on this inverter circuit? any assistance I will appreciate it...
    Thanks



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Tahmid, please am still expecting that inverter circuit as promised....

    Thanks



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    hey Tahmid wake up !!
    9 days gone and we are all waiting for you to upload that inverter circuit in full



  17. #17
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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    I am very busy with my exams. Haven't signed in for the last few days. Will try to post it tomorrow.



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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    I which you best in your Exams,my Tahmid.

    ---------- Post added at 22:33 ---------- Previous post was at 22:27 ----------

    Please, don't forget to post it again....



  19. #19
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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Hi,
    Here it is:

    This could be helpful to many:


    I which you best in your Exams,my Tahmid.
    Thanks.

    Hope this helps.
    Tahmid.

    ---------- Post added at 22:54 ---------- Previous post was at 22:51 ----------

    Quote Originally Posted by khossanr View Post
    Tahmid,
    as sala mu alay kum, I see your schematic,its good,if have PCB layout with component placement,please post.thanks.
    Sorry, I don't have the PCB layout.


    2 members found this post helpful.

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    Re: 1000W 12V d.c. to 230V a.c. power schematic diagram

    Thanks Tahmid, I really appreciate it.
    and I will make sure that i try it....



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