What are the applications of 555 timers in monostable mode?Īns: Missing pulse detector, Frequency divider, Pulse width modulation etc.Ĥ. Outcome: After conducting this experiment, students are able to design the monostable multivibrator and Astable multivibrator using IC 555 Timer.Īns: The ratio of the time of the high output to the time of the total output is the duty cycleģ. Result: Designed and verified the waveforms of monostable multivibrator and Astable multivibrator using 555 Timer. Waveforms at Capacitor and monostable output Theoretically calculate the Time period as T = 0.69 R BC + 0.69 (R A + R B)C.Connect the circuit as shown in the circuit diagram Fig 2.Plot the graph for the input and output waveforms.Theoretically calculate the pulse duration as T = 1.1R 1C 1.Observe the output waveform at pin 3 and measure capacitor voltage across it at pin 6.Apply Negative triggering pulses of frequency 1 KHz at pin 2.Connect the circuit as shown in the circuit diagram Fig 1.To design astable multivibrator for a given frequency using 555 timer.

To design a monostable multivibrator for a required pulse width using 555 timer.Prerequisite: Study the operation of Monostable and Astable Multivibrator.

Astable multivibrator 555 timer