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Start date: 1970End date: 1979

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    An Integrable Electronically Variable Phase Shifter
    (1979-01-01)
    Pookaiyaudom, S.
    ;
    Dejhan, K.
    ;
    Watanachaiprateep, C.
    An easily integrable electronically variable phase shifter is proposed and experimentally demonstrated. The circuit operation is in the current mode, and it can be directly employed as a subsystem of monolithic circuit A temperature compensated biasing circuit has also been suggested. Copyright © 1979 by The Institute Of Electrical And Electronics Engineers, Inc.
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    Accurate syntheses of non-linear resistances
    (1979-01-01)
    Pookaiyaudom, S.
    ;
    Surawatpanya, C.
    An easily integrable circuit principle is proposed and experimentally demonstrated for the syntheses of a large class of voltage-controlled non-linear resistances. The resulting non-linear resistances are floating, bipolar and require low bias currents. © Taylor and Francis Group, LLC.
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    A Linear Temperature-to-Differential-Current Converter
    (1979-01-01)
    Pookaiyaudom, S.
    ;
    Watanachaiprateep, C.
    A simple circuit is proposed as a linear temperature-to-differential current converter. Large and accurate conversion rate can be easily obtained. An immediate application has also been proposed. © 1979 IEEE
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    Transition between a flat magnitude and a sharp cut-off lowpass filter
    (1979-01-01)
    Thajchayapong, P.
    ;
    Lomtong, P.
    A Butterworth lowpass filter provides excellent flatness around ω = 0 but the cut-off rate is low. Recently improvements to the cut-off rate have been made by introducing one ripple near the band edge. This paper offers a generalized design technique such that any degree of trade-offs between flat magnitude around ω = 0 and sharp cut-off at the band edge can be obtained while keeping the ratio of the reflected power to the transmitted power at minimum. © 1979 Taylor and Francis Group, LLC.
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    Filter coefficients of high-pass and band-elimination recursive digital filters with a maximally flat group delay
    (1979-10-01)
    Thajchayapong, P.
    ;
    Cheevasuvit, F.
    The design technique for a recursive digital filter with a maximally flat group delay at an arbitrary specified frequency is known. It is shown here that, for certain cases, the filter coefficients for high-pass and band-elimination recursive digital filters with a maximally flat group delay can be expressed in closed forms.
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    Peak-amplitude detector for sinusoidal signals
    (1979-02-15)
    Pookaiyaudom, S.
    ;
    Watanachaiprateep, C.
    ;
    Dejhan, K.
    A circuit technique is proposed for detecting the peak amplitude of a sinusoidal signal using Pythagoras's law without requiring a simultaneous equal-amplitude quadrature signal. The number of four-quadrant multipliers required is only two.© 1979, The Institution of Electrical Engineers. All rights reserved.
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    Synthesis of CurrentControlled Nonlinear Impedances
    (1979-01-01)
    Pookaiyaudom, S.
    ;
    Dejhan, K.
    ;
    Watanachaiprateep, C.
    An integrable circuit technique is employed to obtain a class of currentControlled nonlinear impedances which is complementary to the recently proposed voltageControlled class of nonlinear impedances. © 1979 IEEE
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    Elimination of Redundancy
    (1979-01-01)
    Maitree, Kanchit
    Redundant bits always occur in handwritten character and make the classification [1] of recognition systems confusing. To eliminate these redundancies, connected numbers [2] will be employed in algorithm. Copyright © 1979 by The Institute of Electncal and Electronics Engmeers. Inc.
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    A Single-Transistor Full-Wave Rectifier
    (1979-01-01)
    Pookaiyaudom, S.
    ;
    Watanachaiprateep, C.
    ;
    Dejhan, K.
    A simple full-wave rectifier using only a single transistor with two matched resistors has been proposed and the bask performances have been experimentally demonstrated. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.
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    Perfectly Linear Ramp Generation with Lossy Capacitor
    (1979-01-01)
    Pookaiyaudom, S.
    ;
    Teweetiwarak, S.
    ;
    Palotaitageong, W.
    It is shown that a perfectly linear ramp voltage can be generated from a lossy capacitor using appropriate compensation current. Copyright © 1979 by The Institute Of Electrical And Electronics Engineers, Inc.