Hi.
I'm planning to build a relay timer with a 555 in monostable mode. I'm aiming at a pulse of 3-15 seconds, even if the trigger switch is kept on for 5-10 minutes.
I have not been able to find descriptions of a way to keep the timer from going continuously, such as the circuit in the attached diagram does.
Maybe my google-searching abilities are as limited as my electronics skills?
Does anyone know a thread/site that i can look at?
Another thing is the power consumption of the circuit on stand-by. I'm going to run this off a battery, and i'd like for it to last as long as possible. Can it be made to trigger the timer when power is switched on, pulse for 3-15 seconds, and then power off the circuit when the switch turns off after 5-10 minutes?
Hope that made any sense!
Thanks, Lade
I'm planning to build a relay timer with a 555 in monostable mode. I'm aiming at a pulse of 3-15 seconds, even if the trigger switch is kept on for 5-10 minutes.
I have not been able to find descriptions of a way to keep the timer from going continuously, such as the circuit in the attached diagram does.
Maybe my google-searching abilities are as limited as my electronics skills?
Does anyone know a thread/site that i can look at?
Another thing is the power consumption of the circuit on stand-by. I'm going to run this off a battery, and i'd like for it to last as long as possible. Can it be made to trigger the timer when power is switched on, pulse for 3-15 seconds, and then power off the circuit when the switch turns off after 5-10 minutes?
Hope that made any sense!
Thanks, Lade