23
Figure 3B.—Multivibrator.
IN ANSWERING QUESTIONS 3-15 AND
3-16, REFER TO FIGURE 3B.
3-15. The time necessary for Q2 in the circuit
to become saturated is controlled by what
RC network?
1. R1, C1
2. R2, C1
3. R3, C2
4. R4, C2
3-16. Which of the following conditions exist
in the outputs of the figure from T0 to
T1?
1. Q1 saturated, Q2 saturated
2. Q1 saturated, Q2 cutoff
3. Q1 cutoff, Q2 cutoff
4. Q1 cutoff, Q2 saturated
3-17. What multivibrator is a square or
rectangular-wave generator with only
one stable condition?
1. Astable
2. Bistable
3. Monostable
4. Eccles-Jordan
3-18. What is the primary use for the
monostable multivibrator circuit?
1. Filter
2. Amplifier
3. Oscillator
4. Pulse stretcher
Figure 3C.—Monostable multivibrator circuit.
IN ANSWERING QUESTIONS 3-19 AND
3-20, REFER TO FIGURE 3C.
3-19. In the stable state of the circuit, what will
be the condition of (a) Q1 and (b) Q2?
1. (a) Cutoff
(b) cutoff
2. (a) Cutoff
(b) saturated
3. (a) Saturated
(b) saturated
4. (a) Saturated
(b) cutoff
3-20. What is the discharge path for C1?
1. C1, Q2, ground, -VCC, Q1, and C1
2. C1, Q2, ground, +VBB, R5, Q1, and
C1
3. C1, Q2, R4, R2, +VBB, -VCC, R2, and
C1
4. C1, Q1, ground, -VCC, R2, and C1
