Current-voltage conveyor

2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)

Vrba

et al. 2012

In this paper a current-and voltage-mode thirdorder quadrature oscillator circuit using current and voltage conveyors is presented. The features of the new circuit are the oscillation frequency control non-interactive to the condition of oscillation, the use of only grounded passive elements, and the possibility of both quadrature current and voltage outputs. Using the CMOS implementation of the active elements, Spice simulation results are given to verify and demonstrate the performance of the new oscillator.

Section: Current and Voltage Conveyormentioning

confidence: 99%

Current- and voltage-mode third-order quadrature oscillator

2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)

Vrba

et al. 2012

“…Another flexible building block for active circuit synthesis is the voltage conveyor (VC) that has been presented in [23]. Based on the duality principle to current conveyors, also first-, second-, and third-generation voltage conveyors can be described [24].…”

Section: Fig 2 Proposed Fast Full-wave Rectifiermentioning

confidence: 99%

Universal Voltage Conveyor and Current Conveyor in Fast Full-Wave Rectifier

Burian

International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems

2012

Abstract-This paper deals with the design of a fast voltagemode full-wave rectifier, where universal voltage conveyor and second-generation current conveyor are used as active elements. Thanks to the active elements, in theory the input and output impedance of the non-linear circuit is infinitely high respectively zero. For the rectification only two diodes and three resistors are required as passive elements. The performance of the circuit is shown on experimental measurement results showing the dynamic range, time response, frequency dependent DC transient value and RMS error for different values of input voltage amplitudes.

“…The recent research also focuses on voltage conveyors (VCs) that have been defined as dual active elements to the current conveyors [18]. As in the theory of current conveyors, also here first-, second-and third-generation VC can be described [19].…”

Section: Current and Voltave Conveyormentioning

confidence: 99%

Minimal configuration precision full-wave rectifier using current and voltage conveyors

IEICE Electron. Express

Vrba

2010

Abstract:In this paper, new minimal configuration precision fullwave rectifier is presented. The structure employs one current and one voltage conveyor and only two diodes. It enables to process both low-voltage and low-current signals. Compared to the op amp based circuit, the proposed circuit is able to rectify signals up to 500 kHz and beyond with no or small distortion. Experimental measurements are performed that show the feasibility of the new precision full-wave rectifier. Keywords: analog processing circuits, current conveyor, instrumentation and measurements, precision full-wave rectifier, voltage conveyor Classification: Electronic instrumentation and control References[1] U. Tietze, C. Schenk, and E. Gramm, "Electronic Circuits-Handbook for Design and Application," Springer, 2008. [2] C. Toumazou and F. J. Lidgey, "Fast current-mode precision rectifier,"Electron. Wireless Wolrd, vol. 93, no. 1621Wolrd, vol. 93, no. , pp. 1115Wolrd, vol. 93, no. -1118Wolrd, vol. 93, no. , 1987 S. J. G. Gift and B. Maundy, "Versatile Precision Full-Wave Rectifiers for Intrumentation and Measurements," IEEE Trans. Instrum. Meas., vol. 56, no. 5, pp. 1703-1710, 2007 C. Toumazou, F. J. Lidgey, and S. Chattong, "High frequency current conveyor precision full-wave rectifier," Electron. Lett., vol. 30, no. 10, pp. 745-746, 1994. [5] A. A. Khan, M. A. El-Ela, and M. A. Al-Turaigi, "Current-mode precision rectification," Int. J. Electron., vol. 79, no. 6, pp. 853-859, 1995. [6] B. Wilson and V. Mannama, "Current-mode rectifier with improved precision," Electron. Lett., vol. 31, no. 4, pp. 247-248, 1995. [7] D. Stiurca, "Truly temperature independent current conveyor precision rectifier," Electron. Lett., vol. 31, no. 16, pp. 1302Lett., vol. 31, no. 16, pp. -1303Lett., vol. 31, no. 16, pp. , 1995 S. Minaei and E. Yuce, "A new full-wave rectifier employing single dual-X current conveyor," Int. J. Electron., vol. 95, no. 8, pp. 777-784, 2008. [9] S. J. G. Gift, "A High-performance full-wave rectifier circuit," Int. J. Electron., vol. 87, no. 8, pp. 925-930, 2000 Electron. Lett., vol. 17, no. 3, pp. 129-130, 1981. [19] T. Dostal and J. Pospisil, "Hybrid models of 3-port immittance convertors and current and voltage conveyors," Electron. Lett., vol. 18, no. 20, pp. 887-888, 1982. Microelectronics Journal, vol. 30, no. 2, pp. 157-160, 1999. [22] J. Koton, K. Vrba, and N. Herencsar, "Tuneable filter using voltage conveyors and current active elements," Int. J. Electron., vol. 96, no. 8, pp. 787-794, 2009. [23] N. Herencsar, J. Koton, and K. Vrba, "A new electronically tunable voltage-mode active-C phase shifter using UVC and OTA," IEICE Electron. Express, vol. 6, no. 17, pp. 1212Express, vol. 6, no. 17, pp. -1218Express, vol. 6, no. 17, pp. , 2009 IJCSNS, vol. 6, no. 3A, pp. 57-65, 2006. [27] J. Jerabek and K. Vrba, "SIMO type low-input and high-output impedance current-mode universal filter employing three universal current conveyors," AEU -Int.