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  • RK Launching new product "Boron" - Rk launching there new product "Boron Fertibor" fertilizer in Bangladesh, the product is marketed by RK Agro products under the brand name of RK "TAZA"

    {denvideo http://www.youtube.com/watch?v=w6Q0-sneUz0}
  • Intel Sciecne Talent Search -
    {denvideo http://www.youtube.com/watch?v=qKyi0M1Qy9M}
    		{denvideo http://www.youtube.com/watch?v=X0KIwvBY9L4}
  • Enviroment Fair 2009 - National Enviroment Fair 2009 held at Osmani Auditorium, Dhaka.
  • Bangladesh Regional Science Fair 2009 -
    {denvideo http://www.youtube.com/watch?v=vQlf6LrQhNM}
    		 {denvideo http://www.youtube.com/watch?v=Zr1f4zvo0Ow}
      

500 Watt Inverter


linux

Inverter 12V to 220V 500W by 2N3055

This is circuit Inverter 12VDC to 220V 50Hz 500W.
It easy to make and Low cost.


Source: leksound project

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linux

Four Small Transistor Alarm Circuits


linux A Photo Of Ron J's Transistor Based ''Door Alarm {A}''

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linux

An SCR Based Burglar Alarm


linux

 

 A Photograph Of Ron J's SCR Based Burglar Alarm - Circuit Board

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linux

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