skmdmasud
Member
I made a timer circuit using the following
**broken link removed**
and added a digital wrist watch which has its alarm output using a transistor connected to the reset to reset the circuit at a defined time. In this way i can start my timer and the timer itself stops using its own timer.
My circuit **broken link removed**
when the timer expires it DE-energises the relay and stays off. Everything is working fine so far but i have notices when the relay is in DE-energized mode any sparks formed by inserting/removing plugs in multiplug(220V ac) causes the timer to reset by itself. I know that spark is a noise in the line so how do i filter it or do something so that my circuit stops this behavior.
**broken link removed**
and added a digital wrist watch which has its alarm output using a transistor connected to the reset to reset the circuit at a defined time. In this way i can start my timer and the timer itself stops using its own timer.
My circuit **broken link removed**
when the timer expires it DE-energises the relay and stays off. Everything is working fine so far but i have notices when the relay is in DE-energized mode any sparks formed by inserting/removing plugs in multiplug(220V ac) causes the timer to reset by itself. I know that spark is a noise in the line so how do i filter it or do something so that my circuit stops this behavior.