42.1. Analog Electronic Circuits

Try these first

1. 1.

   What is the Miller Effect in amplifiers?

   Hint

   Think about how feedback influences input characteristics.

2. 2.

   Define the cutoff frequency.

   Hint

   Consider the frequency limits of amplifier performance.

3. 3.

   What does the Miller effect enhance in amplifier circuits?

   • Input Capacitance
   • Output Resistance
   • Input Resistance

   Hint

   Think about feedback and how it affects capacitance.

4. 4.

   True or False: The lower cutoff frequency can be calculated using the product of resistance and capacitance.

   • True
   • False

   Hint

   Recall the cutoff frequency formulas.

5. 5.

   A common emitter amp shows a mid-gain of -10, can we find the lower cutoff frequency if the input resistance is 10k and capacitance is 10nF?

   Hint

   Remember to substitute values correctly into the formula.

6. 6.

   Given a common source amplifier, if Vth is 0.5 V and Vgs is 2V, what’s the effective transconductance if the Id is estimates at 1.5 mA?

   Hint

   Keep in mind the effect of threshold voltage on IMS calculations.