Digital Electronics - Multivibrators and 555 Timer

Exercise : Multivibrators and 555 Timer - General Questions
16.
Design a circuit using a 74121 to convert a 33-kHz, 30% duty cycle waveform to a 33-kHz, 60% duty cycle waveform.
Rint = 2 k, Cext = 0.012 nF
Rint = 2 k, Cext = 0.012 F
Rint = 4 k, Cext = 0.012 nF
Rint = 4 k, Cext = 0.012 F
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
What controls the output pulse width of a one shot?
the clock frequency
the width of the clock pulse
an RL time constant
an RC time constant
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
Does the 74123 one shot have an internal timing resistor?
yes
no
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
In a typical IC monostable multivibrator circuit, at the falling edge of the trigger input, the output switches HIGH for a period of time determined by the ________.
value of the RC timing components
amplitude of the input trigger
frequency of the input trigger
magnitude of the dc supply voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
A monostable 555 timer has the following number of stable states:
0
1
2
3
Answer: Option
Explanation:
No answer description is available. Let's discuss.