Voltage-controlled dual slope operation square/triangular wave generator and its application as a dual mode operation pulse width modulator employing differential voltage current conveyors

This study presents a DVCC-based voltage-controlled dual slope operation square/triangular wave generator. The proposed configuration uses two differential voltage current conveyors (DVCCs) as active building blocks with four grounded passive components. The duty cycle of the proposed square/triangular wave generator can be adjusted by an input voltage source. The circuit also exhibits an independent control of its oscillation frequency free from the signal amplitude using a grounded resistor. This study also suggests a potentiometer-tuning scheme and a dual mode operation pulse width modulator (PWM) to extend the application of the proposed circuit. This study describes the circuit operations and discusses the non-ideal characteristics and design procedures of the proposed circuits. Prototype circuits were built using commercial ICs and discrete components. Is-Spice simulation and experimental results confirm the validity of the proposed circuits.

[1]  Kirat Pal.  Modified current conveyors and their applications , 1989 .

[2]  Sergio Franco,et al.  Design with Operational Amplifiers and Analog Integrated Circuits , 1988 .

[3]  Thomas A. Lipo,et al.  Pulse Width Modulation for Power Converters: Principles and Practice , 2003 .

[4]  Muhammet Koksal,et al.  A versatile signal flow graph realization of a general current transfer function , 2008 .

[5]  B Almashary,et al.  Current-mode triangular wave generator using CCIIs , 2000 .

[6]  Abhirup Lahiri,et al.  A Novel First-Order Current-Mode All-Pass Filter Using CDTA , 2009 .

[7]  Montree Siripruchyanun.  MO-CTTA-based Electronically Controlled Current- mode Square/Triangular Wave Generator , 2010 .

[8]  Montree Siripruchyanun,et al.  A Simple Current-mode PWM Signal Generator Employing Only Single Active Element , 2010 .

[9]  Sudhanshu Maheshwari.  A Canonical Voltage-Controlled VM-APS with a Grounded Capacitor , 2008 .

[10]  Ahmed M. Soliman,et al.  CMOS operational transresistance amplifier for analog signal processing , 1999 .

[11]  H.T. Russell,et al.  Design of Sinusoidal, Triangular, and Square wave Generator Using Current Feedback Operational Amplifier (CFOA) , 2008, 2008 IEEE Region 5 Conference.

[12]  M. Siripruchyanun,et al.  An electronically controlled current-mode triangular/square wave generator employing MO-CCCCTAs , 2011, The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011.

[13]  Wanlop Surakampontorn,et al.  Temperature compensation of translinear current conveyor and OTA , 1998 .

[14]  Brent Maundy,et al.  A novel current-mode instrumentation amplifier based on operational floating current conveyor , 2005, IEEE Transactions on Instrumentation and Measurement.

[15]  Yu-Kang Lo,et al.  Switch-Controllable OTRA-Based Square/Triangular Waveform Generator , 2007, IEEE Transactions on Circuits and Systems II: Express Briefs.

[16]  Jiun-Wei Horng,et al.  Quadrature Oscillators with Grounded Capacitors and Resistors Using FDCCIIs , 2006 .

[17]  Ali Ümit Keskin.  A Four Quadrant Analog Multiplier Employing Single CDBA , 2004 .

[18]  Hyeong-Woo Cha,et al.  Triangular/square-wave generator with independently controllable frequency and amplitude , 2005, IEEE Transactions on Instrumentation and Measurement.

[19]  Yu-Kang Lo,et al.  Design and implementation of monostable multivibrators employing differential voltage current conveyors , 2011, Microelectron. J..

[20]  Hakan Kuntman,et al.  Single resistance-controlled sinusoidal oscillators employing current differencing buffered amplifier , 2000 .

[21]  Hua-Pin Chen,et al.  A Versatile Universal Capacitor-Grounded Voltage-Mode Filter Using DVCCs , 2007 .

[22]  Firat Kaçar,et al.  New lossless inductance simulators realization using a minimum active and passive components , 2010, Microelectron. J..

[23]  Joseph Carr Joseph J. Carr.  Elements of Electronic Instrumentation and Measurement , 1986 .

[24]  Sudhanshu Maheshwari,et al.  High output impedance CMQOs using DVCCs and grounded components , 2011, Int. J. Circuit Theory Appl..

[25]  Hoon Kim,et al.  Pulsewidth Modulation Circuits Using CMOS OTAs , 2006, IEEE Transactions on Circuits and Systems I: Regular Papers.

[26]  Montree Siripruchyanun,et al.  A simple pulse width modulator using current conveyor , 2000, 2000 TENCON Proceedings. Intelligent Systems and Technologies for the New Millennium (Cat. No.00CH37119).

[27]  Avireni Srinivasulu,et al.  Current Conveyor-Based Square/Triangular Waveform Generators With Improved Linearity , 2009, IEEE Transactions on Instrumentation and Measurement.

[28]  Muhammad Taher Abuelma'atti,et al.  A low-cost dual-slope triangular/square wave generator , 2004 .

[29]  Montree Siripruchyanun,et al.  Fully and electronically controllable current-mode Schmitt triggers employing only single MO-CCCDTA and their applications , 2011 .

[30]  Hung-Chun Chien.  Switch-controllable dual-hysteresis mode bistable multivibrator employing single differential voltage current conveyor , 2011, Microelectron. J..