Upload
dotuyen
View
228
Download
0
Embed Size (px)
Citation preview
Lecture (03)Building simple Monostableusing 555 IC
By:Dr. Ahmed ElShafee
Dr. Ahmed ElShafee, ACU : Fall 2017, Practical App. EE 01١
• In this mode, the timer generates a fixed pulse whenever the trigger voltage falls below Vcc/3. When the trigger pulse voltage applied to the #2 pin falls below Vcc/3 while the timer output is low, the timer's internal flip‐flop turns the discharging Transistor off and causes the timer output to become high by charging the external capacitor C1and setting the flip‐flop output at the same time.
Dr. Ahmed ElShafee, ACU : Fall 2017, Practical App. EE 01٢
•
Dr. Ahmed ElShafee, ACU : Fall 2017, Practical App. EE 01٣
Dr. Ahmed ElShafee, ACU : Fall 2017, Practical App. EE 01٤
The periodT = 1.1 x Rt x Ct
Dr. Ahmed ElShafee, ACU : Fall 2017, Practical App. EE 01٥
Thanks,..See you next week (ISA),…
Dr. Ahmed ElShafee, ACU : Fall 2017, Practical App. EE 01٦