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## Physics 48 - Basic Electronics for Physicists

Department of Physics and Astronomy, Dartmouth CollegeSummer 2001 and 2002

Physics 48 is an introduction to electronics for students who have had Physics 14 (or 16); in particular, second-year physics majors who are enrolled in Physics 41 are encouraged to take this course. The course is designed for students who wish to learn about analog and digital electronics.

The course begins with the fundamentals of linear lumped circuits using passive components, including node and loop analysis, Thevenin's theorem, and impulse and frequency response of AC circuits. Diodes, transistors, and operational amplifiers are introduced, and active circuits involving feedback are discussed. The basic components of digital electronics are introduced. Other topics to be addressed include: tranmission lines, noise, stability, and analog-to-digital conversion. A laboratory accompanies the course which allows the student to gain practical experience in building and testing the circuits discussed in lecture. An independent project is required in which the student will become acquainted with computer-aided layout of a printed circuit board and soldering.

Prerequisites: Physics 14 or 16, and Mathematics 23.

Course Information(2002: info.pdf, 2001: info.pdf)Course Syllabus(2002: syllabus.pdf, 2001: syllabus.pdf)Course Schedule(2002: sched.pdf, 2001: sched.pdf)Laboratories

Lab 1 lab1.pdf DC Circuits Introduction to analysis equipment and linear DC circuits. Lab 2 lab2.pdf Time Constants Introduction to AC signals and RC/RL time constants. Lab 3 lab3.pdf Tranfer Functions of RC, RL, and RLC Circuits Introduction to transfer functions (phase and amplitude) and resonance. Lab 4 lab4.pdf,

trans.pdfTransformers and Transmission Lines Introduction to transformers and input/output impedance. Investigation of the effects encountered when the signal wavelength is comparable to the transmission line length. Lab 5 lab5.pdf Diodes Introduction to various diodes and measurement of their current-voltage characteristics. Lab 6 lab6.pdf Transistors I Introduction to various BJTs and measurement of their characteristics and their dependence on temperature. Lab 7 lab7.pdf Transistors II Constructing and amplifier and filter using BJTs and investigation of JFETs. Lab 8 lab8.pdf Op Amps I Introduction to operational amplifiers, ideal and real, and feedback. Lab 9 lab9.pdf Op Amps II Constructing differentiators and integrators, and building a multi-pole active filter. Lab 10 lab10.pdf Digital I Introduction to digital circuits; binary adders and flip-flops; and measurement of gate delays. Lab 11 lab11.pdf Digital II Constructing a shift register using flip-flops, a divide-by-N counter, use of the 555 timer. Homework Sets

HW 1 hw1.pdf Simple resistance networks, DC voltage and current sources, equivalent resistances, Thevenin equivalent circuits, Impulse responses in LR and RC circuits. HW 2 hw2.pdf Current-voltage relationships in Ls and Cs, LCR circuits, complex impedance, AC sources, transfer functions, hi-fi speaker. HW 3 hw3.pdf Transformers, diodes, Zener diodes, voltage regulators, charge pumps, Bode plot of Lab #3 LRC circuit. HW 4 hw4.pdf Transistors: DC biasing, AC operation, temperature dependance, AC equivalent circuits, corner frequencies. HW 5 hw5.pdf JFET transistors, OP Amps: ideal, real, adders, active filters, differential amplifiers. HW 6 hw6.pdf Digital: Logic gates, Boolean algebra, RS flip-flops, D flip-flops, Divide-by-N counter.

## Contact Information

- Office: 215b Cummings Hall
- Telephone: (603) 646-0096
- E-mail: simon at thayer.dartmouth.edu