now i want to use the mosfet 640 for switching

plz give me the driving circuit diagram for mosfet 640.

 

What is your application?

Explain what you want to do with the IRF640. Just saying that you want to use it for switching doesn't tell us very much, as that is what they are designed for.

Note that MOSFETs are generally not the best kind of switch to use for circuits >200V, or for AC control.

 

What is your application?

Explain what you want to do with the IRF640. Just saying that you want to use it for switching doesn't tell us very much, as that is what they are designed for.

Note that MOSFETs are generally not the best kind of switch to use for circuits >200V, or for AC control.

now i am controling the to main line (220 AC)which is parallel and one line is active at a time and for this purpose we use the IRF640.

 

Not without a lot of loud noises, bright flashes and smoke.

The IRF640 is not suitable for your requirements. It will die within moments.

 

Not without a lot of loud noises, bright flashes and smoke.

The IRF640 is not suitable for your requirements. It will die within moments.

than what we can do this?
and plz tell me any mosfet or IGBT for 220v Ac and 5 A load.

i thing must be remeber we are using two 220 line and 1 is ON at a time

 

generally IGBTs can handle more current then mosfets, but are slower,
the IRFP460A if I remember correctly is rated 500V at 20A

I personally use IGBTs.. there are many available, both in TO-247 and SOT-227 package, that can handle your requirements with ease.

however, since this is an AC circuit if I understood, id opt for a TRIAC

 

now i am controling the to main line (220 AC)which is parallel and one line is active at a time and for this purpose we use the IRF640.

Is this the same design as you presented here: http://forum.allaboutcircuits.com/showthread.php?t=40203

1) Please keep your threads together.
2) Please consider the considerable risk of potentially connecting two live, 220 lines together.

John

 

The OP was given the part number of an SSR that might be adequate for his needs in that thread. This thread is not productive, as the devices mentioned are not made to switch AC.