I am a "newbie" to this forum and would like to briefly discuss the pulses from the decoded outputs of a decade counter such as a CD4017B type. The attached timing diagram shows, marked in red at the bottom of the diagram, the width of what I assume is a typical pulse from on of the decoded outputs.
I am driving the clock input of the 4017 with an adjustable astable configured 555 chip. Th r/c components for the 555 oscillator is selected for a slow clock rate up toabout 500 Hz maximum.
If the pulse from the astable cicuit is say 25 milliseconds in duration, does it necessarily follow that the duration of the pulse from any of the decoded outputs of the 4017 will also be of the same duration, ie 25 milliseconds?
If not, is there a methodology to design a circuit adaption to allow the decoded pulses to followeaxctly the pulse duration of the 555 clock signal?
Thank you.
Mosfetti
"Insanity is doing everything the same way you always have...and expecting different results."
I am driving the clock input of the 4017 with an adjustable astable configured 555 chip. Th r/c components for the 555 oscillator is selected for a slow clock rate up toabout 500 Hz maximum.
If the pulse from the astable cicuit is say 25 milliseconds in duration, does it necessarily follow that the duration of the pulse from any of the decoded outputs of the 4017 will also be of the same duration, ie 25 milliseconds?
If not, is there a methodology to design a circuit adaption to allow the decoded pulses to followeaxctly the pulse duration of the 555 clock signal?
Thank you.
Mosfetti
"Insanity is doing everything the same way you always have...and expecting different results."
Attachments
-
78.3 KB Views: 83