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Author Articles

  • Transistors Undergo Mass Testing

    By Steve Scrupski, December 17, 2001

    Reliability in transistors is being greatly enhanced by the combined use of automatic testing systems, and data-processing and computer techniques. In the evolution of automated testing, two systems have been introduced—one specifically...

  • New Connectors Withstand Adverse Environments

    By Steve Scrupski, December 17, 2001

    A new rack-and-panel connector design almost eliminates physical damage caused by environmental conditions, shock, and vibration. The connector provides multiple points of contact at all times, protecting the contacts against damage and improving...

  • Extending High-Frequency Response

    By Steve Scrupski, December 03, 2001

    High-frequency transistor limits can be extended and circuit gain increased through a new technique that neutralizes the detrimental effect of emitter inductance. This parameter has a serious effect on the high-frequency performance of transistor...

  • Infrared Camera Spots Malfunctions

    By Steve Scrupski, December 03, 2001

    By photographing a circuit board with an infrared scanning camera, engineers can, within 10 to 60 sec, detect overheated components. This infrared technique is presently being used by engineers at International Business Machines Corp. to measure...

  • Illiac II Computer Shaping Up For Tests

    By Steve Scrupski, November 19, 2001

    Iliac II, the University of Illinois' scientific computer, is expected to be ready for its first system tests next spring. At that time, the arithmetic units, some of the control units, core storage, and some of the tape units should be...

  • Micromin Digital Computer Uses Semiconductor Net

    By Steve Scrupski, November 19, 2001

    A microminiature digital computer, using semiconductor logic networks, rather than individual components, has been built by Texas Instruments Inc., Dallas, for the Air Force. The experimental model, having a total volume of 6.3...

  • Switching, Frequency Barriers Fall

    By Steve Scrupski, November 05, 2001

    Solid-state devices for faster switching or higher frequency operation were prominent among developments unveiled at the Electron Devices Meeting in Washington, Oct. 26-28. New advances in microwave, data-handling, and energy-source devices also...

  • Photoconductive Cells For Industrial Use

    By Steve Scrupski, November 05, 2001

    About 1000 times more light-sensitive than photovoltaic cells, these photoconductive cells are designed for light-dependent control applications. They are available in four basic sizes: a "Compactron" type, a 9-pin type in a conventional tube...

  • Packaging Is A Problem In R&D, Too

    By Steve Scrupski, October 29, 2001

    The packaging approaches of advanced-systems development laboratories are worth examining. During the coming turmoil and transition, these laboratories must solve the following problems if they are to justify the large sums invested in...

  • Fluid-Sphere Gyro Has High Sensitivity

    By Steve Scrupski, October 29, 2001

    A radical departure from conventional gyro design has resulted in a device that can detect motion too minute to be measured. The miniature gyro's unique sensing ability makes it especially suitable for stabilizing space platforms carrying...

  • Flying-Spot Scanners Speed Inputs

    By Steve Scrupski, October 15, 2001

    Character-recognition machines, based on high-resolution flying-spot scanners and sophisticated logic circuitry, promise variable-type-face, high-speed data input directly from machine-printed documents. Techniques used in the Apple...

  • Magnetic Computer Uses Multiaperture Cores

    By Steve Scrupski, October 15, 2001

    An airborne, guidance-type computer that would use magnetic circuitry for logic as well as for memory is being built by Sperry Gyroscope Co., Great Neck, N.Y. Basic clock rate of the system is to be 600 kc sine wave, which is said to make possible...

  • Four New HP Solid State Counters

    By Steve Scrupski, October 01, 2001

    All the advantages of solid-state design are now yours in these new hp solid state counters—offered at prices comparable to those of today's vacuum tube counters. And you get the advantages of greater readability, faster measurements, easier...

  • High-Temperature Glass Used To Seal Diodes

    By Steve Scrupski, October 01, 2001

    High-temperature sealing of silicon-diode sheets has been achieved with a technique that may provide hermetically sealed semiconductor devices without the use of cans. The method is adaptable to volume production, and tests indicate that excellent...

  • Design Of Arecibo Radar On Schedule

    By Steve Scrupski, September 17, 2001

    By early next spring, the huge 430-mc radar being built near Arecibo, Puerto Rico, for the Advanced Research Projects Agency of the Defense Department should be collecting data on electron density in the iono-sphere. This is an estimate made in...

  • IBM Stretch Computer Utilization In Business Explained

    By Steve Scrupski, September 17, 2001

    Expected usefulness of the IBM 7030 Stretch computer for business data processing was described at the 16th National Meeting of the Association for Computing Machinery in Los Angeles, Sept. 5-8. William V. Crowley of the Corp. for Economic &...

  • Thin-Film Memory Gives Fast Output

    By Steve Scrupski, August 20, 2001

    A magnetic thin-film cylinder that contains features of the thin-film dot, the ferrite core, and the magnetic rod is bidding for an important role in future computer memories. Under development by CBS Laboratories of Stamford, Conn., the device,...

  • San Francisco: Golden Gate To Electronic Research

    By Steve Scrupski, August 20, 2001

    Engineers attending the forthcoming Western Electronics Show and Convention will find the San Francisco area a thriving center of electronic research. Intensive studies are under way today in solid state, microwaves, information handling, and other...

  • Tiros III Carries New Solid-State Timer

    By Steve Scrupski, August 06, 2001

    An all-solid-state timer on the newly orbited Tiros III weather satellite represents a significant electronic advance, according to its designers at RCA. Tiros III is making possible studies of the formation of tropical storms over the Caribbean,...

  • Fiber Optics Pointed Toward Bright Future

    By Steve Scrupski, August 06, 2001

    Fiber optics held an important place in the Aug. 7-11 symposium of the Society of Photographic Instrumentation Engineers in Los Angeles. Four companies showed fused-fiber image conduits: Mosaic Fabrications Inc. and American Optical Co., both of...