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ECE3020 Homework 3

Reading:  Hmwrk 3 and beyond:

- MIT OCW Lectures:  6, 7, 8, 9

- Chp. 2 diodes in Circuits by UMF textbook

- Chp. 3 BJT inverter in Circuits by UMF textbook.

- Chp. 4 MOS inverter in Circuits by UMF textbook

- MIT textbook:  Nonlinear, diodes, transistors.

- Spice – voltage controlled switch (relay)

Writing:

1.Describe 4 types of transistors.

2. Describe the spice model of a voltage controlled switch.

3.  Describe several types of transistor divider circuits.

4.  Describe and abstract a Morse telegraph repeater circuit.

5.  Describe the operation of an electret microphone circuit.

6.   Spice cmos gate example.

6a.  Add a DC sweep and show your result.

6b.  Replace the pmos with a resistor and show and comment on the new DC sweep with regards to noise margins and gain.

6c.   Replace the nmos with a resistor and show and comment on the new DC sweep with regards to noise margins and gain.

7.  Exercise the switch with 2 resistor divider circuits to show the different DC sweep behaviors for the resistor pull up and pull down cases. In the resistor pull down case, demonstrate both the 4 terminal and 3 terminal switch cases and discuss how these are related to transistor divider circuit insights.