mozikluv
New Member
i have wired up a 555 to activate and deactivate a device. instead of directly installing the RC network to get the desired time, i expermented by using a 30 second interval. i have put a 1k connected to pin 3 to pull up the voltage of the output to supply voltage. the unit functioned except the time difference of the on/off period. below is the result of my exp.
time measurement at initial turn on t measure after 5 minutes
on - off 45s on - off 27s
off - on 20s off - on 24s
on - off 35s on - off 24s
off - on 15s off - on 15s
on - off 35s on - off 28s
off - on 15s off - on 18s
Average on time 38s Average on time 26s
Ave. off time 16s Ave. off time 19s
t measrue after 10 mins.
on - off 24s
off - on 19s
on - off 26s
off - on 19s
on - off 25s
off - on 19s
Ave on time 25s - Ave. off time 19s
as can be gleaned from the 5 min. time and the 10 min. time there is a time difference of about 6 seconds.
my question is, is there a way to narrow the time gap of the on/ off time?
any suggestion would be highly appreciated.