The Op-Amp circuit shown above represents a

Consider the Schmitt trigger circuit shown below.

A triangular wave which goes from -12V to 12V is applied to the inverting input of the OP-AMP. Assume that the output of the OP-AMP swings from +15V to -15V. The voltage at the non-inverting input switches between.

In the Op-Amp circuit shown, assume that the diode current follows the equation I = I_s exp (V/V_T) . For V_i = 2V, V_o = V₀₁, and for V_i = 4 V, V_o = V₀₂. The relationship between V₀₁ and V₀₂ is

Consider the OP-Amp circuit shown in the figure.

If $${V_i} = {V_1}\,\,\sin \left( {\omega \tau + \phi } \right),$$ then the minimum and maximum values of $$\phi $$ (in radians) are respectively