A real noob here.
OK - I've had a bit of experience building kits and the like but not designing one.
I want a small simple circuit able to produce a single pulse output of varying duration, independant of trigger length. I've played with using a monostable 555 circuit but getting the trigger pulse short enough is catching me out, without resorting to a signal generator for the clock/trigger which kind of defeats the purpose
Requirements -
1: 12 ish V in, 12 ish V out.
2: Trigger = simple push button switch, non latching
3: Output = SIngle pulse, variable width. What do you reckon the range could be? ideally I want around 100 uS up to 1 Sec. for ease a variable resistor or something would be good but if I need to switch components in and out then so be it. I'm happy to play with different component values to alter the time.
It dosent have to be precise. All I want is a single pulse to go from 0V to 12V once when I press a switch, and not even exactly when I press the switch, a delay there is OK too. I guess a cap discharge could do it but not sure where to start with limiting it. I even thought of using a cap to trigger the 555 but I was concerned I was overly complicating what should be a fairly simple process.
Thanks heaps in advance for any ideas !!!
Lynx.
OK - I've had a bit of experience building kits and the like but not designing one.
I want a small simple circuit able to produce a single pulse output of varying duration, independant of trigger length. I've played with using a monostable 555 circuit but getting the trigger pulse short enough is catching me out, without resorting to a signal generator for the clock/trigger which kind of defeats the purpose
Requirements -
1: 12 ish V in, 12 ish V out.
2: Trigger = simple push button switch, non latching
3: Output = SIngle pulse, variable width. What do you reckon the range could be? ideally I want around 100 uS up to 1 Sec. for ease a variable resistor or something would be good but if I need to switch components in and out then so be it. I'm happy to play with different component values to alter the time.
It dosent have to be precise. All I want is a single pulse to go from 0V to 12V once when I press a switch, and not even exactly when I press the switch, a delay there is OK too. I guess a cap discharge could do it but not sure where to start with limiting it. I even thought of using a cap to trigger the 555 but I was concerned I was overly complicating what should be a fairly simple process.
Thanks heaps in advance for any ideas !!!
Lynx.