Electronics-Designer's-Cookbook.pdf

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PUBLICATION
tmcGRAw-HILL
El
C SOB
PREPARED BY
THE EDITORS OF
los-anan
Electronics
Price $5.50 U.S.A.
Price $12.00 outside U.S.A.
Printed in U.S.A.
All material copyrighted by
Electronics
McGraw-Hill, Inc.
1221 Avenue of the Americas
New York, New York 10020
CONTENTS
AMPLIFIERS
Automatic gain control quells amplifier thump
FET-controlled op amp permits wide dynamic range
Continuing biasing improves clamping amplifier
HP -45 calculator speeds rf amplifier design
Digital word sets gain of amplifier
D -a converter forms programable gain control
Unity -gain stage is 50 -ohm driver
Combination logic cuts parts in digitally controlled amplifier
Two ICs make low-cost video -distribution amp
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COMMUNICATIONS
Adjustable discriminator cleans up signal noise
Ordinary cassette recorder can be full-time phone monitor
Schottky diode pair makes an rf detector stable
Synchronous noise blanker cleans up audio signals
Interfacting a teletypewriter with an IC microprocessor
Broadband p-i-n attenuator has wide input dynamic range
Coherent phase modulation attains data rates of 100 MHz
Analog gate and zener diode give 70 -dB isolation at 80 MHz
Optically coupled ringer doesn't load phone line
ICs interface keyboard to microprocessor
Silent timer warns of tape run -out
Microphone preamp gets power through signal cable
Optocoupler converts ac tone to digital logic levels
Touch Tone receiver front end provides agc and filtering
Outputs of op -amp networks have fixed phase difference
Linear pot and op amp provide audio volume control
Single preamplifier/isolator drives If and vlf receivers
Opto-isolators couple CRT terminals to printer lines
Converter lets processor drive teletypewriter
Optical isolator circuit shows phone -line status
Feedback in PLL linearizes phase demodulator
Logic circuit selects most intense signal
Photocoupler provides agc for audio communications
Video detector stores peak for minutes
Mark/space modulator drives acoustic coupler
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SIGNAL SOURCES
Sure-fire ignition system safely limits engine rpm
Making music with IC timers
Norton quad amplifier can be a low-cost function generator
Generating tone bursts with only two IC timers
Generating nanosecond pulses with TTL monostables
Getting extra control over output periods of IC timer
Single switch regulates number of pulses
Generator's duty cycle stays constant under load
Timer pulse widths range from seconds to hours
Common silicon diodes stabilize oscillator
Frequency divider plus op amp approximates sine wave
Compensating the 555 timer for capacitance variations
Antilog function generator keeps VCO output linear
Waveform is synthesized from linear segments
ECL IC oscillates from 10 to 50 MHz
Monostable's pulse width is programable
Bootstrap circuit generates high -voltage pulse train
One-shot with feedback loop maintains constant duty cycle
ECL tuned oscillators are voltage -stable
Bilateral current source is digitally programable
Digital pulses synthesize audio sine waves
Modified function generator yields linear VCO
Complementary JFETs form bimode oscillator
Delay line in shift register speeds m -sequence generation
Triangular waves from 555 have adjustable symmetry
Low -distortion oscillator uses state -variable filter
Timer IC stabilizes sawtooth generator
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SIGNAL CONVERSION
Transistor array cuts cost of algebraic inversion
Two -amplifier integrator extends timing performance
Storing computer data with a cassette recorder
Switched frequency doubler provides multiple outputs
Full -wave rectifier needs only three matched resistors
Coding a -d converters for sign and magnitude
Rectifying wide -range signals with precision, variable gain
FET programs op amp for invertible gain
Comparator and D-MOS switch rectify small signals linearly
Digital command inverts signal
Comparator IC forms 10 -bit a -d converter
Pulse -frequency doubler requires no adjustment
Four -bit a -d converter needs no clock
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