Электронный журнал "Радиоежегодник" - Выпуск 6. EDN Design Ideas. Обзор за 2011 год (на англ. языке)

Тема номера: EDN Design Ideas
Выпуск: декабрь, 2011

В сборник включены материалы рубрики "Design Ideas" англоязычного журнала разработчиков электроники "EDN" за 2011 год. В обзоре 102 схемотехнические идеи.
Распространяется бесплатно на сайте РадиоЛоцман.

Скачать бесплатно полную версию журнала "Радиоежегодник" - Выпуск 6. EDN Design Ideas. Обзор за 2011 год (8,7 Мб)

• Желаете получать уведомления о выходе новых номеров журнала? Подпишитесь на рассылку!
• Архив номеров журнала Радиоежегодник

Содержание:

• January 2011
  • Reliable 555 timer doesn’t falsely trigger      
  • Test continuity with an LED
  • Flash an LED from ac-mains power
  • Transistors drive LEDs to light the path
  • Use an optocoupler to make a simple low-dropout regulator
  • Power an LED driver using off-the-shelf components     
  • Oscillator has voltage-controlled duty cycle
  • Generate noisy sine waves with a sound card
  • Decode a quadrature encoder in software
• February 2011
  • Compute a histogram in an FPGA with one clock     
  • Control an LM317T with a PWM signal
  • High-speed buffer comprises discrete transistors
  • Limit inrush current in high-power applications
  • Protect MOSFETs in heavy-duty inductive switched-mode circuits
  • Reduce acoustic noise from capacitors      
  • Function generator has varibale frequency
  • Power supply accepts wide input-voltage range
  • Circuit lets you test capacitors
• March 2011
  • Design provides single-port-to-dual-port SDRAM converter    
  • Zener diode protects FPGA inputs
  • Bicolor LED indicates 10 states
  • Relay driver switches two relays with one pin
  • Anticipator circuit speeds signal settling to a final value    
  • Schmitt trigger provides toggle function
  • Active multiplexing saves inputs
  • Finely tune the hue of blue-light sources
• April 2011
  • Low-component-count logic probe works with TTL and CMOS logic   
  • Circuit implements photovoltaic-module simulator
  • Switch circuit controls lights
  • Isolated PWM suits low frequencies
  • Increase efficiency in embedded digital-I/O lines     
  • Modulating a reference allows maximum-value search for phase detection
  • Offline supply drives LEDs
  • Light an LED without wasting energy
• May 2011
  • Circuit secures bootstrap operation under light load     
  • Build an accurate bipolar voltage reference
  • Send MIDI signals over long distances
  • MOSFET provides high power at low loss
  • Waveform generator minimizes amplitude dependency    
  • Produce current from positive or negative high-voltage supplies
  • Arrange LEDs as seven-segment displays
  • Logic gates form high-impedance voltmeter
  • Measure resistance and temperature with a sound card
• June 2011
  • Potentiometer calibrates photodiode amplifier     
  • Drive 16 LEDs with one I/O line
  • Circuit measures battery capacity
  • Programmable driver targets piezoelectric actuators
  • Circuit boosts voltage to piezoelectric transducers
  • Protect power-LED strings from overcurrent      
  • Simple flasher operates off ac mains
  • Use resistor noise to characterize a low-noise amplifier
  • Build a UWB pulse generator on an FPGA
  • Generate swept sine/cosine waveforms with two filters
• July 2011
  • Compensate for four-wire sensor errors      
  • LED-current limiter accepts ac or dc
  • Voltage inverter employs PWM
  • Form positive pulses from negative pulses
  • Positive edges trigger parabolic timebase generator 07/28/2011
  • Measure small currents without adding resistive insertion loss
  • Power resistor varies in value
  • Minimize noise in power-supply measurements
• August 2011
  • Driver circuit lights architectural and interior LEDs     
  • Use op amps to make automatic-ORing power selector
  • Charging time indicates capacitor value
  • Circuit provides universal ac-input-voltage adapter     
  • Logic probe uses two comparators
  • DAC fine-tunes reference output
  • LEDs indicate sound level
• September 2011
  • Polynomial rotation accelerates CRC calculations     
  • Simple circuit measures optocoupler's response time
  • Circuit provides visual verification of IR pulses
  • An LED's intrinsic capacitance works in a 650-mV LRC circuit
  • Eight LEDs make a 100-division voltmeter      
  • Simple circuit controls the rate of voltage change across a capacitor or another load
  • LED bar-graph display represents two digits
• October 2011
  • Circuit controls inrush current in ac-operated power supplies   
  • Save 3 dB of output power using feedback to set the output impedance
  • Optically isolated overcurrent detector works from ac mains
  • Simple circuit helps to protect a vehicle-reverse camera
  • Use a self-powered op amp to create a low-leakage rectifier    
  • Simple reverse-polarity-protection circuit has no voltage drop
  • Series-LC-tank VCO breaks tuning-range records
• November 2011
  • Circuit detects rapidly falling signals and rejects noise    
  • Hack into a stopwatch to make a phototimer
  • Comparator directly controls power-MOSFET gate
  • AGC circuit uses an analog multiplier
  • Add extra output to a boost converter      
  • Fabricate a high-resolution sensor-to-USB interface
  • Converters yield droop-free S/H circuit
• December 2011
  • Inexpensive VFC features good linearity and dynamic range    
  • Mains-driven zero-crossing detector uses only a few high-voltage parts
  • Build an op amp with three discrete transistors
  • A diode ladder multiplies voltage under software control
  • Charger extends lead-acid-battery life
  • Circuit provides more accurate multiplication     
  • A few added components make a self-contained controller for 100A load
  • Simple night-light uses a photoresistor to detect dusk
  • Simple tester checks Christmas-tree lights