dc-ac inverter using astable to drive some 2N3055

[axelbondelo]

hi guys, i want to start my new dc-ac inverter project. please give me some suggestion about the schematic diagram that i uploaded. dont wanna go further without some suggestions.

 

[godfreyl]

schematic diagram that i uploaded.

What schematic diagram? Try again.

 

[thudpucker]

Are you thinking of using 3055's in a Switching Power supply?

 

[axelbondelo]

sorry for that here is the schematic diagram

 

[andre_luis]

...please give me some suggestion about the schematic diagram that i uploaded

Inverters based on BJT transistors nowadays is somewhat obsolete.
The MOSFET transistors brings better efficiency in terms of energy usage.

Another problem on applying 2N3055 is its Beta parameter which may start from 20, requiring 1,5A to drive each base.
It means that is expected significant losses even on diver circuit.



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[axelbondelo]

thank you for these informations. but it is possible to to replace those 2N3055 by some mosfet. thank you

 

[andre_luis]

Instead perform adaptions at above circuit, you must specify precisely power requirements for required inverter.



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[axelbondelo]

300W will be enough for me. i just want to charge some computer when im going camping.

 

[andre_luis]

So, you want an inverter with following specifications: Po=300W, Vi=12VDC, Vo=220VAC.
There are many resources available employing many topologies:

**broken link removed**


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[axelbondelo]

thank you so much. it helped a lot