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Subject: search.filters.subject.CCCII

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    A novel current-mode temperature-insensitive APF using a single CCCII+2 with grounded capacitor
    (2016-01-01)
    Kaewdang, Khanittha
    ;
    Kumwachara, Kiattisak
    ;
    Surakampontorn, Wanlop
    A novel first-order all-pass filter (APF) using a single positive second-generation current conveyor of current gain equal to 2 (named as CCII+2), one grounded capacitor and one resistor is proposed. From the proposed CCII+2 based filter, by replacing the CCII+2 and the resistor with a positive second-generation current-controlled conveyor of current gain equal to 2 (named as CCCII+2), a new filter which requires only a single CCCII+2 and one grounded capacitor is achieved. In order to operate in current-mode with temperature insensitive, a temperature compensation technique for the CCCII is also proposed. The experimental and PSPICE simulation results found in a good agreement with theoretical analysis are included.
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    CCCIIs-based sinusoidal quadrature oscillators with non-interactive control of condition and frequency
    (2014-01-01)
    Summart, Saksit
    ;
    Thongsopa, Chanchai
    ;
    Jaikla, Winai
    The paper presents two current-mode quadrature oscillators with non-interactive two current controls for both of the condition of oscillation (CO) and the frequency of oscillation (FO) using current controlled current conveyors (CCCIIs). The proposed oscillators can provide two sinusoidal output currents with 90 degrees phase difference. It also provides high output impedances that make the circuit can directly drive load without additional current buffer. The condition of oscillation and frequency of oscillation can be controlled by adjusting the bias currents of the CCCIIs. The proposed circuits use only grounded capacitors without any external resistor which is very appropriate for further development into an integrated circuit. The results of PSPICE simulation program are corresponding to the theoretical analysis. Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi.
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    A sinusoidal oscillator using translinear current conveyors
    (2010-12-01)
    Kumngern, Montree
    ;
    Junnapiya, Somyot
    This paper presents a new single-element-controlled current-controlled sinusoidal oscillator. The proposed oscillator is composed of one translinear current conveyor (CCCII), one CCCII with controlled current gain and two grounded capacitors. The oscillator is beneficial to monolithic integrated circuit implementation by the use of grounded capacitors. The oscillation condition and the oscillation frequency can be controlled electronically and independently through the bias current of the CCCII. PSPICE simulation results are given to confirm the operation of the proposed oscillator. © 2010 IEEE.
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    Electronically tunable multiphase sinusoidal oscillator using translinear current conveyors
    (2010-11-01)
    Kumngern, Montree
    ;
    Chanwutitum, Jirasak
    ;
    Dejhan, Kobchai
    A new electronically tunable current-mode multiphase sinusoidal oscillator based on translinear current conveyors is presented. The proposed oscillator circuit, which employs only one translinear current conveyor and one grounded capacitor for each phase, can generate arbitrary N output current equal-amplitude signals that are equally spaced in phase (N being even or odd), all at high output impedance terminals. The frequency of oscillation and the condition of oscillation can be controlled electronically and independently through the bias current of the translinear current conveyor. The proposed structure also has simple circuitry, low-component count, and is highly suitable for integrated circuit implementation. The theoretical results were verified by PSPICE simulation. In addition, the modification of the N sinusoidal oscillators to construct a programmable multiphase oscillator is also discussed. © 2010 Springer Science+Business Media, LLC.
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    Electronically tunable current-mode all-pass filter-based high-Q bandpass filter using minimum elements
    (2009-12-01)
    Kumngern, Montree
    A new electronically tunable current-mode high-Q bandpass filter employing second-generation current controlled conveyor (CCCII)-based first-order all-pass filters is presented. The proposed filter uses only three CCCIIs, one current-controlled resistor and two grounded capacitors. The center frequency (ω<inf>c</inf>) and the quality factor (Q) can be independently adjusted through the bias current of the CCCII and current-controlled resistor. The Q-value is also temperature independent. The proposed configuration is very attractive for monolithic form. The performances of the proposed circuit are simulated with PSPICE to confirm the presented theory. ©2009 IEEE.
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    New simple square-rooting circuits based on translinear current conveyors
    (2007-07-01)
    Dejhan, K.
    ;
    Netbut, C.
    Two new square-rooting circuits, based on second-generation current-controlled current conveyors (CCCIIs), are presented. The first square-rooting circuit consists of two CCCIIs, one current-controlled resistor and two grounded resistors. The input signal of the first circuit is a voltage, and output is the voltage proportional to the square root of input voltage. The second one consists of two CCCIIs and a current-controlled resistor. In the second circuit, the input signal is a current, and output is the current proportional to the square root of input current. Each circuit realizes by using a current-mode technique; hence the proposed square-rooting circuits are simple circuitry, wide dynamic range and wide bandwidth. The proposed square-rooting circuits were confirmed by using PSPICE simulation.
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    Current-conveyor-based single-element-controlled and current-controlled sinusoidal oscillators
    (2006-07-01)
    Fongsamut, C.
    ;
    Anuntahirunrat, K.
    ;
    Kumwachara, K.
    ;
    Surakampontorn, W.
    A new single-element-controlled sinusoidal oscillator circuit that incorporates two second generation current conveyors (CCIIs), two grounded capacitors and two resistors is presented and analysed. The circuit is beneficial to monolithic integrated circuit implementation by the use of grounded capacitors. In addition, a new current-controlled sinusoidal oscillator using only two second generation current controlled conveyors (CCCIIs) and two grounded capacitors can be achieved by replacing CCIIs and resistors series at X terminals with CCCIIs. The oscillators provide extremely low passive 0 -sensitivities and good frequency stability. Moreover, the oscillation frequencies of the CCII-based and the CCCII-based oscillators can be controlled, respectively, by a grounded resistor and by an external bias current. Experimental and SPICE simulation results that confirm the theoretical predictions are given.