6 40W 12-220V simple inverter project



The output of this inverter project is square wave and delivers 175ma max to  1.2kohm load

Load  must not include equipments with motor that operates in purely sinewave source of 50 or 60 Hz frequency .The circuit is good in lighting  but ensure first that the load must not exceed the 45W for proper operation.



Resistor is  39ohm rated 10W while transformer is 6A 220V to 12V-0-12 V

for more protection, provide 4A fuse and a switch in series to the battery






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6 comments:

  1. amitDecember 29, 2010 at 6:31 AM

    i can not understand what type of transformer ? is this step down or step up ? pls answer me .
    bonsai_20nv@yahoo.com

    ReplyDelete
  2. DH-gmDecember 29, 2010 at 7:52 AM

    amit thank you for asking.
    the transformer type is a step down transformer rated 220v primary voltage and 24v secondary center tap. The transformer marking is 220V for primary winding and 12V-0V-12V secondary winding side.

    Note:
    this transformer is connected in reverse where its input will be the 24v center tap while the output is the 220V

    ReplyDelete
  3. KENNY HOJune 19, 2011 at 10:17 AM

    IN THE CIRCUIT, WHAT TYPE BAT. THAT ARE YOU USING? IS THAT A CAR BAT?

    ReplyDelete
  4. DH-gmJune 20, 2011 at 4:51 AM

    I am using a small 12V battery less than 10AH rating..But you can use any 12V battery. just take note that this circuit may result to excessive overheating when used in longer hours using larger batteries.

    ReplyDelete
  5. sarath chandMay 1, 2012 at 12:44 AM

    how much is the current the output voltage drives for this inverter?


    thank u

    ReplyDelete
  6. AnonymousJuly 11, 2014 at 3:52 AM

    The resistors will going super-hot, i have used values around 200 Ohm 5W and works great. You can use also on output of AC a capacitor connected in parallel.
    Robert B.

    ReplyDelete

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