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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Monostable Multivibrator using IC 555

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Intermediate

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1. What is the formula to calculate the time period of the monostable multivibrator.

a: T = 0.69 * (R_A + R_B) * C Explanation

Explanation

b: T = 0.69 * (R_A + 2R_B) * C Explanation

Explanation

c: T = 0.69 * R_B * C Explanation

Explanation

d: T = 1.1 * R * C Explanation

Explanation

2. When a capacitor charges:

a: the voltage across the plates rises exponentially Explanation

Explanation

b: the circuit current falls exponentially Explanation

Explanation

c: the capacitor charges to the source voltage in 5×RC seconds Explanation

Explanation

d: all of the above Explanation

Explanation

3. The ________ is defined as the time the output is active divided by the total period of the output signal.

a: active ratio Explanation

Explanation

b: duty cycle Explanation

Explanation

c: on time Explanation

Explanation

d: off time Explanation

Explanation

4. A monostable 555 timer has the following number of stable states:

a: 0 Explanation

Explanation

b: 1 Explanation

Explanation

c: 2 Explanation

Explanation

d: 3 Explanation

Explanation

5. What is the output pulse width of the waveform at the output of the circuit in the given figure?

a: 1.65 ms Explanation

Explanation

b: 18.2 ms Explanation

Explanation

c: 4.98 ms Explanation

Explanation

d: 54.6 ms Explanation

Explanation

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