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Issue
Table of Contents Elektor 7/1997
Magazine 7/1997
Downloading of this magazine is reserved for Elektor GREEN and GOLD members only.
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  • International Microprocessor Contest
  • Hexadecimal keyboard for PCs
  • Graphics cards for PCs
  • Mexpress
  • Capacitors
  • Bell and Edison - Application versus inspiration
  • Volume 1996 on CD-ROM
  • Musical touch-tones
  • LM2574 switch-mode power supply
  • Simple two-way loudspeaker
  • Voltage-independent 2 A battery charger
  • ADC for Centronics port
  • Blanking-level clamp
  • Auto shuttle for model trains
  • STAMP security system
  • New books
  • Selective door chime
  • 79xx replacement
  • Mains on delay circuit
  • Li-Ion battery capacity meter
  • Digital tester
  • Quasi-digital bandpass filter
  • PC controls two stepper motors
  • Scarecrow
  • XLR-to-audio-socket switch
  • Active Butterworth filter
  • AES/EBU-to-S/PDIF converter
  • AVM with auxiliary start
  • Car alarm
  • Hygrometer
  • 78xx replacement
  • S/PDIF-to-AES/EBU converter
  • AF input module
  • RGB video amplifier
  • 13.8-V power supply for mobile rigs
  • Four-state flip-flop
  • Mains-THD meter
  • Supply board for output amplifiers
  • Low-power crystal oscillator
  • Light-operated squeaker
  • Yamaha DB50XG stand alone soundcard
  • Active Bessel filter
  • Transistor matcher
  • Instrumentation amplifier
  • Fast zener diode
  • Battery saver
  • Single-range function generator
  • FET scope probe
  • Single-chip ac-dc inverter
  • AC-DC converter
  • AF input selection
  • Adaptive windscreen wiper control
  • Video-contrast expander
  • State-of-charge tester
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