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    A translinear-based true RMS-to-DC converter using only npn BJTs
    (2009-06-01)
    Kaewdang, Khanittha
    ;
    Kumwachara, Kiattisak
    ;
    Surakampontorn, Wanlop
    A true rms-to-dc converter based on the explicit computation technique is proposed in this paper. Since the scheme utilizes translinear principle circuits to realize current-mode squarer, averaging and square root circuits, only npn bipolar junction transistors are required. The conversion circuit has wide-band frequency response and can be operated with single supply voltage at 2 V. PSPICE simulation and experimental results show good agreement with the theoretical predictions. © 2008 Elsevier GmbH. All rights reserved.