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Aim

Theory

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Procedure

Simulation

Posttest

References

Contributors

Feedback

Monostable Multivibrator using IC 555

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1. What does the discharge transistor do in the 555 timer circuit?

a: Charge the external capacitor to start the timing over again Explanation

Explanation

b: Charge the external capacitor to stop the timing Explanation

Explanation

c: Discharge the external capacitor to stop the timing Explanation

Explanation

d: Discharge the external capacitor to start the timing over again Explanation

Explanation

2. The monostable multivibrator circuit is not an oscillator because ________.

a: Its output switches between two states Explanation

Explanation

b: It requires a sine wave input signal Explanation

Explanation

c: It requires a trigger to obtain an output signal Explanation

Explanation

d: The circuit does not require a dc power supply Explanation

Explanation

3. The monostable multivibrator circuit is also know as ________.

a: One shot Explanation

Explanation

b: Two shot Explanation

Explanation

c: Three shot Explanation

Explanation

d: Four shot Explanation

Explanation

4. A monostable 555 timer has one stable states:

a: True Explanation

Explanation

b: False Explanation

Explanation

5. 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

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