Physics 316a - 2008 Assignment 1 Due: Tuesday, Sept. 9 4 pm (turn in to the envelope on my windowsill)
Topic Primary source Alternate source Critical concepts
Input & Output Handout on input & output impedance LM 3-14 or H&H 1.01-1.06 input impedance,
impedance output impedance,
AC signals H&H 1.07-1.08
Combining “Capacitors in parallel and series”, p. 21 rules for parallel and
Capacitors series addition of caps
Basic description of LM 32-35 H&H 1.12-1.13 I = C dV/dt,
capacitors, RC decay (stop before “integrators & differentiators) meaning of RC time
filters, Handout on complex currents & voltages, H&H “Impedance and ZC = 1/jwC,
complex plus LM 37 (start at “RC filters”) Reactance” (p. 29), 1.18, 1.19 using voltage divider
voltages through LM 42 (stop before “phasor diagrams”) concept to analyze
reading capacitor LM 51-53
scope probes LM 62-63 Probe increases Zin,
but divides signal by
diodes & power supplies LM 65-70 H&H 1.25-1.27 diode “turn-on”
voltage, meaning of
transistors LM 84-89 H&H 2.00-2.08
Assigned exercises: H&H 1.27 (p. 46), Additional exercise 7 (p. 59): Sketch the output for the circuit shown to the left.
1A (individual problem): Show that, for frequencies well above its f3dB, a low pass filter attenuates signals by an additional factor of 10 for every additional factor of 10 increase in frequency.
1B: A high-pass filter is built using a 1 nF capacitor and a 10k resistor. A 200 Hz signal is applied to the input. What is the phase of the output signal relative to the input? You should specify both the magnitude of the phase shift, and whether the output lags or leads the input.