This is probly very simple, but can any1 tell me how to trigger a monostable electronicly without using a push button.i need a circuit that gives a single pulse 2 trigger the monostable.any help?thanx
What's the trigger for the event? You can trigger a monostable using a switch, other logic... any number of things. Being more specific and descriptive will greatly improve the responses to your question.
Basically i wana trigger it 2 turn on a motor for 10
sec..the problem tht i have is jst 2 give the trigger input a pulse without using a push button.so i just need a circuit that can give 1 pulse when activated 2 trigger the timer.i tried a inverter logic gate to trigger the 555? but the timer stayed on and didnt go off.is it more clearer nw?thanx
Basically i wana trigger it 2 turn on a motor for 10
sec..the problem tht i have is jst 2 give the trigger input a pulse without using a push button.so i just need a circuit that can give 1 pulse when activated 2 trigger the timer.i tried a inverter logic gate to trigger the 555? but the timer stayed on and didnt go off.is it more clearer nw?thanx
I dnt have the resources of scanning rite now as im using my mobile 2 place threads but basically pin 2 on the 555 is connected 2 ground and the not gate is joint 2 it,hope u understand what im sayin.thanx
I dnt have the resources of scanning rite now as im using my mobile 2 place threads but basically pin 2 on the 555 is connected 2 ground and the not gate is joint 2 it,hope u understand what im sayin.thanx
hi,
Again, the OP is using a Push button, which is most likely a n/o or n/c set of contacts, not a change over switch.
So your circuit is not suitable for a simple n/o or n/c push button, I think you should make this clear on you circuit.
For a change over contact set its fine.
the circuit here(u2a,u2b,u2c,u2d)is a switch debounce circuit also which can be used to trigger your 555,as long as you add the capacitor,diode and additional resistor so you can edge trigger your 555........