vincentspm
New Member
Hi All,
I connected 1 555 timer and 2 IC 4017 counter.
when i supply voltage by 9v DC battery, all the timing no problem,
but once i supply using 9v AC-DC adapter, the timing are not in sequence, and on randomly.
Example:
i connect 1st IC 4017 9th output to a LED, and 555 timer output to 4017 clock input.
By right it should 10 pulse from 555 timer, and 1 output pulse from 4017,
for my case, it keep random blinking on 4017 output.
Can i know why it can happpen?
I connected 1 555 timer and 2 IC 4017 counter.
when i supply voltage by 9v DC battery, all the timing no problem,
but once i supply using 9v AC-DC adapter, the timing are not in sequence, and on randomly.
Example:
i connect 1st IC 4017 9th output to a LED, and 555 timer output to 4017 clock input.
By right it should 10 pulse from 555 timer, and 1 output pulse from 4017,
for my case, it keep random blinking on 4017 output.
Can i know why it can happpen?