Electronic Devices - Linear-Digital ICs

Exercise : Linear-Digital ICs - Filling the Blanks
6.
When the input to the 311 voltage comparator is ________ value, the output is ________ if the inverting input is connected to ground.
any negative, low
any positive, low
any positive, high
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
In a comparator, the level of the reference voltage must be ________.
negative
positive
zero
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
When the loop is in lock in a PLL, the input frequency is ________ the output frequency from the VCO.
the same as
greater than
smaller than
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
In a 555 timer, a series connection of three resistors sets the reference voltage levels to the two comparators at ________ and ________.
2VCC / 3, VCC / 3
VCC / 2, VCC / 4
VCC, VCC / 2
VCC, VCC
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
In the operation of two 311 voltage comparators as the voltage window detector, a low output indicates that the input is ________.
above the higher reference voltage
below the lower reference voltage
either above the higher reference voltage or below the lower reference voltage
within the high and the low reference voltages
Answer: Option
Explanation:
No answer description is available. Let's discuss.