transistor-af-and-rf-circuits-lytel.pdf

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A4444.
PHOTOFACT PUBLICATION
TAL-1
by Allan Lytel
Schematics and descriptions
4/
of over 100 transistorized
circuits for
r -f and audio
applications.
$2.95
Cat. No. TAL-1
TRANSISTOR AF AND RF
CIRCUITS
by
Allan Lytel
HOWARD W. SAMS & CO., INC.
THE BOBBS - MERRILL COMPANY, INC.
Indianapolis
New York
PREFACE
FIRST EDITION
FIRST PRINTING - FEBRUARY, 1965
TRANSISTOR AF AND RF CIRCUITS
Copyright e 1965 by Howard W. Sams & Co., Inc.,
Indian-
of America.
apolis,
Indiana. Printed
in
the United
States
Reproduction or use, without express permission, of editorial
or pictorial content, in any manner, is prohibited.
No patent
liability is assumed with respect to the use of
the information
contained herein.
Library of Congress Catalog Card Number: 65-17354
The use of semiconductors in electronic circuits has, and still
is,
growing at a rapid rate. Experimenters and hobbyists are continu-
ously looking for transistor circuits to construct.
This book is a compilation of
many r -f and audio circuits using
transistors. In each of the five sections of the book,
you will find
schematics, parts lists, and discussions of operation of many of the
circuits. In addition, an introductory section provides general infor-
mation on the construction of the circuits. and includes a table of
parts manufacturers.
Acknowledgment must be given to the following manufacturers
who supplied much of the data from which this book was prepared:
Amperex Electronic Corp.; CBS Electronic Division, CBS, Inc.;
Delco Radio Div.; Fairchild Semiconductor Corp.; General Electric
Co.; General Motors Corp.; Motorola Semiconductor Products;
Nucleonic Products Co., Inc.; Pacific Semiconductor, Inc.; Radio
Corporation of America; and Texas Instruments, Inc.
ALLAN LYTEL
January, 1965
CONTENTS
INTRODUCTION
7
SECTION 1
AUDIO -FREQUENCY AMPLIFIERS
13
1/2 -Watt Audio Amplifier -1/2 -Watt Audio -Frequency Amplifier -
3/4 -Watt Amplifier-I-Watt Phonograph Amplifier-I-Watt Audio
Amplifier -1.3 -Watt Amplifier -2 -Watt Audio Amplifier -1.7 -Watt
Amplifier -2 -Watt Audio Amplifier -2.5 -Watt Audio Amplifier -
2.5 -Watt Audio Amplifier -2.5 -Watt Audio Amplifier -2.5 -Watt
Audio Amplifier -6 -Watt High -Fidelity Audio Amplifier -50 -Watt
Audio Amplifier-Audio-Output Stage-Audio Power Amplifier-
Low-Distortion Power Amplifier-Phonograph Amplifier -15 -Watt
Phono Amplifier -10 -Watt Class -B Amplifier
Stereo Amplifier-Multi-input Preamplifier-Preamplifier-5-Watt
SECTION 2
OSCILLATORS, CONVERTERS, MIXERS
38
Code -Practice Oscillator -70 -MC Power Oscillator -70 -MC Col-
pitts Oscillator -70 -MC Hartley Oscillator -27 -MC Crystal Oscil-
lator -100 -KC Crystal -Controlled Oscillator -2 -Meter Converter -
250 -MC Oscillator -450 MC -to -105 MC Converter -50 -MC Con-
verter -30 -to -5.5 -MC Mixer -76 -MC Crystal Oscillator -500 -MC
Oscillator Circuit -250 MC -to -60 MC Converter -80-6 Meter Con-
verter -450 MC -to -105 MC Converter-Code-Practice Oscillators
SECTION 3
TRANSMITTERS AND RECEIVERS
58
240 -MC 8 -Watt Transmitter -160 -MC C -W Transmitter -170 -MC
Transmitter -120 -MC Aircraft Transmitter -27 -MC CB Transmit-
ter-C-W Transmitter -20 -Watt Marine Transmitter-Superregen-
erative 27 -MC Receiver -30 -MC Single-Sideband Transmitter-
40 -Watt Marine Transmitter-A-M Tuner -150 -MC F -M Trans-
mitter-F-M Wireless Transmitter -27 -MC Citizens Band Trans-
mitter-F-M Tuner-l-Watt 27 -MC Transmitter-Ultralow-Pow-
ered Transmitters -76 -MC 2 -Watt Transmitter -240 -MC 0.5 -Watt
Transmitter -5 -Watt Citizens Band Transmitter -20 -Watt Marine
Superregenerative
130 -MC
Receiver -27 -MC
Transmitter-Superregenerative 27 -MC Receiver
Remote -Control
Transmitter-I-Watt Citizens Band Transmitter-Citizens Band
Transceiver -76 -MC 10 -Watt Transmitter -27 -MC Transmitter-
INTRODUCTION
This book is designed primarily for the electronics experimenter;
it covers radio receivers and audio amplifiers. In general, the power
supplies are not included, since various types can be used and these
are covered in another book.
All of the circuits discussed have been built and tested; some use
noncommercial or nonstandard parts. Where this is the case, the part
has been described as completely as possible so that it can be made
or obtained by the builder. Because the field of transistors is growing
rapidly and because new devices as well as new and different desig-
nations for old devices are appearing constantly, it is possible for
you
to substitute parts and still have a working unit.
Usually, the resistors, capacitors, and inductors that are used as a
part of the circuit should be as close as possible to the given values.
For example, wattage ratings given for resistors, are for conditions
of normal ventilation. There are some deviations, of course, that can
be made, such as using larger or smaller capacitors than specified in
a filter circuit. But, if an electrolytic capacitor has a higher voltage
than specified,
it may not properly "form" at the circuit working
voltage. In most cases it is good practice to at least build the circuit
as it was originally built and tested before an experimentation or parts
substitution is made.
These circuits have been contributed to the book by semiconductor
manufacturers, and in some cases the semiconductors carry a "house
number," which is an unregistered number used for a developmental
transistor. In every case these transistors are available, either under
the number as given in the book, or perhaps under a registered num-
ber where the manufacturer has
gone into large-scale commercial
production.
SECTION 4
MODULATORS AND I -F AMPLIFIERS
.
Mobile Modulator -25 -Watt Modulator -60 -MC I -F Amplifier -
25 -Watt Modulator -100 -Watt Modulator -12.5 -MC I -F Amplifier
-5.5 -MC I -F Amplifier -30 -MC I -F Amplifier
......
.
96
SECTION 5
MISCELLANEOUS CIRCUITS
106
Signaling System-Mobile Public -Address System -5 -Watt 150 -MC
Amplifier-Squelch Amplifier -160 -MC Power Amplifier-Auto-
mobile Turn -Signal Minder-C-W Monitor -160 -MC Amplifier-
Metronome Circuits -100 -MC Amplifier-Low-Level D -C Ampli-
fier-Varactor Tripler Circuit-Wide-Band Amplifier -50 -MC Am-
plifier -50 -KC Amplifier -10 -MC Video Amplifier-Speech Clipper
-450 -MC R -F Amplifier -160 -MC Driver -Final -100 -KC Crystal
Standards -30 -MC Amplifier
Lead dress and care in construction is critical, particularly in the
high frequency, or front, end of these receivers. The construction of
many of these circuits requires a considerable amount of experience
on the part of the experimenter. This is necessarily true for both
receivers and transmitters, but it is not quite as
necessary for audio
amplifiers, since the lead dress and placing of parts is not usually as
critical as it is in radio -frequency circuits.
7

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