Laboratory Application Assignment

In this lab application assignment vou wit examine the resonant effect in beth series and paralel LC circuits. You will construct a series $6C$ circuit and see how the current, $1,$ rises to its maximum value at resonarse. You will also construct a parallel $tC$ circuit and sec how the impedance, $Z$ rises to its maximum value at resonance.

Equlpment: Obtain the following items from your instructor.

Function generator

Oxilitoxoge

$4\mathrm{.}7-$mlt inducter

$0\mathrm{.}001-$ f capacitor

$47-0$ and $100kcarten-$film revistors

Determining the Resonant Frequency, $f_{,}$ of a Series LC Circuit

Examine the series LC ciecuit in Fin $3$cm$3$n Calsulate and reoond the cesorant frequency, $t-$

Condruct the weries $($C tireuit in Fig. $25-22$a$.$ Connect channel $1$ of the oscilloscope to the input voltage, V$,$ and channel $2$ across the resistor, $R,$ as shown. Set the input wothage

to $1V_{R,r}$ and the frequency, $f,$ to the value calculated for $t_r$ While viewing the resostor voltage, $V_s$ move the frequency dial back and forth. Measure and record the frequency that produces the maximum resistor voltage. $V_s.$ This frequency is the resonant frequency $t_r,f=$

Hecord the measured value of $V_n$ at $G.$ Make sure that $V_n$ is still set to $1V_{r+\text{d}\text{o}\text{t}\text{s}}J{V}_n=95$ Does the fact that $V_s$ is maximum at prove that the series curnent, $($is also masimum it $f?q,$ If your answer was yes, then explain why. $q,$

$q,$

Using the meaverd value of $V_b$ calculate and record the series fact that the cursent, $($decreases to $70\mathrm{.}70\%$ of its maximum vatur at the edge frequencies $f,$ and $f_{,\text{e}\text{x}\text{p}\text{e}\text{r}\text{i}\text{m}\text{e}\text{n}\text{t}\text{a}\text{l}\text{l}\text{y}\text{d}\text{e}\text{t}\text{e}\text{r}\text{m}\text{i}\text{n}\text{e}\text{t}\text{h}\text{e}}$ bardwidit. $$ f$,$ of the resonant orcuit. $($The may be defreult to do$)r=$ Cakulate the $0$ of the circuit using the measured values or $f,$ and $f$:$G=-$

Using the axilbseppe, measure and necord the phase relationship between $V_e$ and $V_k$ at $f_5,=$