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.