folks,
allow me to post here.
how to make a circuit that have one lamp with two switch? let say: from SW1 i can ON/OFF and so with SW2 also.i can switch on the lights from sw1 and off it from sw2..inreverse, i cam switch on from sw2 and off in sw1.
hope youd got my point.
thanks

It takes a special switch to do this but it is possible. You can buy switches like this for regualr house lighting. usually they are used when you have a long hallway and want to be able to switch the lights on and off from both ends of the hallway. You should be able to get them at any decent hardware store.

what kind of the switch did you mean?can you elaborate the wiring diagram?thanks

For lighting purposes it is called a 3-way switch. It is commonly known as a spdt switch. You need two of them one at each end. It is commonly wired using a 3-conductor cable. If you need 3 or more switches then you need a 4-way switch. For a schematic go to the hardware store and look at the package or google.

Actually if this is for a dc circuit, you would only need a spst switch (single pole single throw).

If you can't fix it, blow it up and deny that you saw anything.

never mind, I re-read the post and you can not use a spst switch

If you can't fix it, blow it up and deny that you saw anything.