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William H. Morong

William H. Morong provides electronic design, design-impasse solutions, and technical-literature services and develops and presents technical seminars.


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  • Simple Super Ripple-Eater Also Cleans Battery-Based Supply

    By William H. Morong, December 27, 2011

    These two circuits provide ripple rejection for unregulated power supplies to audio amplifier applications and can follow a declining voltage source (such as a battery) to low values without dropout. A higher-power version that sacrifices some high-frequency performance is included. The basic circuit can be made to operate to reject ripple at frequencies well above 1 MHz.

  • Regulator Limits Dissipation While Capping Current At The Desired Level

    Regulator Limits Dissipation While Capping Current At The Desired Level

    By William H. Morong, February 11, 2010

    Current-limiting regulators protect the circuits they feed but don't necessarily protect themselves against excessive dissipation. Here is an Idea For Design with a regulator that does both.

  • Good One-Shot Is Based On An LVDS Receiver

    By William H. Morong, December 15, 2005

    In the days of large split supplies, it was relatively easy to make a good monostable multivibrator. Even 5-V single supplies posed only a moderate challenge. Making a good one-shot to run on 3.3 V is more difficult, though. The variation of CMOS thresho

  • Circuit Measures Microvolts In The Presence Of Volts

    By William H. Morong, August 23, 2004

    Sometimes, it's necessary to make microvolt measurements in the presence of volts. For example, the need arose to measure the thermoelectric potentials in an RTD circuit in which the 10 V applied to self-heat the RTD made measuring such tiny...

  • Spice: A Tool For All Seasons

    By William H. Morong, January 19, 2004

    Spice is an eminently useful tool for analog design. It has its eccentricities, so to speak, and they have led to some harsh criticism. But its capabilities far outweigh its foibles. The "ice" in Spice, developed by the University of California,...