Hello everybody!
excuse me if the title is not very intuitive.
I wish to trigger a circuit in order to feed the Vin of a 555 timer with the decreasing voltage coming from a capacitor discharging (in the picture attached is 4.7uF).
My main issue here is that I need the capacitor to continue discharging even after the trigger is finished. At the moment, it stops when the trig is over.
I would like to start discharging the cap even with a very short pulse.
This will allow to have a decreasing trigger signal that can be time-adjusted by changing the value of the 27k resistor on the 555 section.
the initial pulse should both give the first trigger at the output, and push the capacitor to discharge.
Unfortunately I can’t find a solution for this. It might exist a very simple solution.
In the picture attached, each division is 1V
this is the link for the falstad simulation https://tinyurl.com/yxk8exws
Any help appreciated.
MN
Mod;lightened image.E
excuse me if the title is not very intuitive.
I wish to trigger a circuit in order to feed the Vin of a 555 timer with the decreasing voltage coming from a capacitor discharging (in the picture attached is 4.7uF).
My main issue here is that I need the capacitor to continue discharging even after the trigger is finished. At the moment, it stops when the trig is over.
I would like to start discharging the cap even with a very short pulse.
This will allow to have a decreasing trigger signal that can be time-adjusted by changing the value of the 27k resistor on the 555 section.
the initial pulse should both give the first trigger at the output, and push the capacitor to discharge.
Unfortunately I can’t find a solution for this. It might exist a very simple solution.
In the picture attached, each division is 1V
this is the link for the falstad simulation https://tinyurl.com/yxk8exws
Any help appreciated.
MN
Mod;lightened image.E
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