akg said:
do u want to switch the relay at 10Khz , impossible, as already pointed out.
u didn't said ur requirement.
okay.. i state clearer...
the NC is connected to the GND, NO to the +5V, COM to a pin of input port of micro controller. when the relay is switched, the microcontroller will response to it. i have only square wave to switch it.
any other suggestion instead of using relay?
i mean.. when the switch is off, it is around 0.6V, and when the switch is on, it is the square wave around 3V. get what i mean??