Physics team developed a radio transmitter (FM) as shown in the circuit below. They needed to know what inductance value should the component marked L1 have in order to transmit the electromagnetic signal at frequency 90MHz. The transmitter signal is produced from combination of capacitor C2 and inductor L1. Find the value of the inductor in microhenry using the FM transmitter resonance frequency formula.
Physics team developed a radio transmitter (FM) as shown in the circuit below. They needed to know what inductance value should the component marked L1 have in order to transmit the electromagnetic signal at frequency 90MHz. The transmitter signal is produced from combination of capacitor C2 and inductor L1. Find the value of the inductor in microhenry using the FM transmitter resonance frequency formula.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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QUESTION 4
(b) Physics team developed a radio transmitter (FM) as shown in the circuit below. They needed to know what inductance value should the component marked L1 have in order to transmit the electromagnetic signal at frequency 90MHz. The transmitter signal is produced from combination of capacitor C2 and inductor L1. Find the value of the inductor in microhenry using the FM transmitter resonance frequency formula.
Transcribed Image Text:M1
Electret
microphone
+3V DC
Miniature FM transmitter
R1
4.7K
B
2N2222
C1
T0.01uF
C2
33pF
L1
C3
6.8pF
R2
220 Ohms
Antenna
www.circuitstoday.com
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