Q1.Group
I gives two possible choices for the impedance Z in the diagram. The circuit
elements in Z satisfy the conditions R2C2 > R1C1. The transfer functions V0/V1represents a kind of
controller.
Match the impedances in Group I with the type of controllers in Group II
Q2.Consider the Schmidt trigger circuit shown below
A triangular wave which goes from -12 to 12 V is applied to the inverting input
of OPMAP. Assume that the output of the OPAMP swings from +15 V to -15 V.
The voltage at the non-inverting input switches between
Answer : Option CExplaination / Solution:
Let the voltage at non inverting terminal be V1, then after applying KCL at non
inverting terminal side we have
If V0 swings from -15 to +15 V then V1 swings between -5 V to +5 V.
The logic function implemented by the following circuit at the terminal OUT is
Answer : Option DExplaination / Solution:
From the figure shown below it may be easily seen upper MOSFET are shorted
and connected to Vdd thus OUT is 1 only when the node S is 0,
Since the lower MOSFETs are shorted to ground, node S is 0 only when input P
and Q are 1. This is the function of AND gate.
For the operational amplifier circuit shown, the output saturation voltages are ± 15V. The upper and lower threshold voltages for the circuit are, respectively.