Digital Electronics - Multivibrators and 555 Timer
Exercise :: Multivibrators and 555 Timer - General Questions
17.
What controls the output pulse width of a one shot?
A. the clock frequency B. the width of the clock pulse C. an RL time constant D. an RC time constant
Answer: Option D
Explanation:
18.
Does the 74123 one shot have an internal timing resistor?
Answer: Option B
Explanation:
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 ________.
A. value of the RC timing components B. amplitude of the input trigger C. frequency of the input trigger D. magnitude of the dc supply voltage
Answer: Option A
Explanation:
20.
A monostable 555 timer has the following number of stable states:
Answer: Option B
Explanation:
, Cext = 0.012 nF
F