Q4. Determine the current

Two different NMOS transistors with exactly the same threshold voltage form a current mirror like circuit connections as shown below. Determine the current I_D.

Q3. Determine the current

For the current mirror below, determine the current  I_{REF}.

Q9. Determine the current and output impedance

The non-ideal op-amp with gain A=50000, but with infinite input resistance and zero output resistance below is used to increase the overall output resistance of NPN current source below. Find the current I_C and the output resistance, R_{out}.

Q10. Determine the current and the emitter resistance

For the current source below, determine the Zener current I_Z, and the BJT's emitter resistance R_E if I_0 = 2\text{mA}.

Q2. Determine the current

For the current mirror below, determine the current  I_{REF}.

Q1. Determine the current

For the current mirror below, determine the current I_0.

Q10. Find component values to make the transfer function frequency independent

The filter given below has the transfer function T(s)= v_{out}(s)/v_{in}(s) where s is the Laplace variable. If C_1 \neq C_2, and R_1 \neq R_2, given C_1, R_1, find C_2, and  R_2, if gain is frequency independent and equal to -G where G is a real positive number. 

Q6. Find the resistance

The filter given below is known as an all pass filter. If T(s) is the transfer function v_{out}(s)/v_{in}(s) of the filter where s is the Laplace variable, first find |T(\omega)| and angle T(\omega), where \omega is the Fourier variable. If the desired phase shift is -30^o (-30 degrees) at operating frequency of 5\times10^3\text{rad}/\text{s}, what is the value of R if C=10\text{nF}?

For the filter below, determine the condition which gives real poles to the transfer function v_{out}(s)/v_{in}(s) where s is the Laplace variable. 

Q2. Determine the type and poles and zeros of the filter

For the circuit below, determine poles and zeros of the transfer function v_{out}(s)/v_{in}(s) where s is the Laplace variable. What type of filter is this?