W. Stephen Woodward

Stephen Woodward

Steve Woodward has authored over 50 analog-centric circuit designs. A self-proclaimed "certified, card-carrying analog dinosaur", he is a freelance consultant on instrumentation, sensors, and metrology freelance to organizations such as Agilent Technologies, the Jet Propulsion Laboratory, the Woods Hole Oceanographic Institute, Catalyst Semiconductor, Oak Crest Science Institute, and several international universities. With seven patents to his credit, he has written more than 200 professional articles, and has also served as a member of technical staff at the University of North Carolina. He holds a BS (with honors) in engineering from Caltech, Pasadena, Calif., and an MS in computer science from the University of North Carolina, Chapel Hill.

Areas of interest of the author: Analogue Design Measurement Amplifiers Oscillators Supply Automation Digital

Publications on RadioLocman by the author W. Stephen Woodward:

  1. Linearized portable anemometer with thermostated Darlington pair
    This self-heated constant-temperature-delta transistor anemometer is cheap, rugged, and sensitive....
  2. FemtoAmp offers extreme gain range & isolation
    Amplification of sub-picoamp signal currents is always a design challenge, especially when gain...
  3. Self-heated Darlington transistor pair comprises new air flow sensor
    Among the many methods available for air flow detection, self-heated thermal flow sensors are...
  4. New VFC uses flip-flops as high speed, precision analog switches
    Voltage to frequency converters (VFCs) are a popular method of noise-tolerant analog to digital...
  5. Multiplexed, programmable-gain, track-and-hold amplifier has instrumentation inputs
    ADCs need adequate signal-acquisition analog interfaces to perform at their best. The classic...
  6. Flying capacitor and negative time constant make digitally programmable-gain instrumentation amplifier
    Numerous and evil are the forces of darkness that conspire to frustrate accurate analog-to-digital...
  7. Inverted MOSFET helps 555 oscillator ignore power supply and temp variations
    Since its invention over a half-century ago by Hanz Camenzind at Signetics, the familiar 555 analog...
  8. Add One Resistor to Give Bipolar LM555 Oscillator a 50:50 Duty Cycle
    More than a half-century old, the ubiquitous and mind-bogglingly useful 555 analog timer has become...
  9. Input buffer and attenuator for sound card oscilloscopes extends low-end frequency response
    The advent of inexpensive standardized 16- and 24-bit audio I/O hardware for personal computers...
  10. Circuit cancels interconnection resistance to enhance load regulation
    Linear regulator ICs offer simple, efficient, and effective solutions in a multitude of low- to...
  11. Series vs shunt linear voltage regulation for small solar-photovoltaic power supplies
    Solar-photovoltaic arrays seem to get cheaper and more efficient every day, making them...
  12. Series-Connected Transistors Use Differential Heating To Sense Airflow
    Among the methods available for airflow measurement, thermal flow meters enjoy the virtues of...