Experimental Realization of Square/Triangular Wave Generator using Commercially Available ICs

Abstract

This paper deals with the experimental realization of square/triangular wave generator using commercially available ICs. A prototype of extra-X second generation current conveyor and five passive components are used in the experimental setup. The proposed generator provides both square and triangular waveforms simultaneously in voltage-mode. The circuit enjoys the feature of independent controllability of oscillation frequency via grounded resistor/grounded capacitor. A range of oscillation frequency from 3[Formula: see text]Hz to 250[Formula: see text]Hz is easily achieved via variation in one of the grounded resistors for a fixed value of capacitor. Moreover, a range of oscillation frequency from 19.8[Formula: see text]Hz to 19.2[Formula: see text]kHz can be achieved through the variation in grounded capacitor. The experimental results show that the performance of the proposed generator is good at operating frequency as low as at 19.8 Hz and as high as 19.2[Formula: see text]kHz. Therefore, the proposed circuit can operate well from extra-low-frequency range to very-low-frequency range. Furthermore, the maximum nonlinearity of oscillation frequency is found to be 4% only.

A Novel Dual-Mode Dual Type Hysteresis Schmitt Trigger and its Applications using Single Differential Voltage Current Conveyor Transconductance Amplifier

“…Square wave generators based on (second generation differential current conveyor) DCII, two resistors and a sole capacitor in [39] and [40] have the advantage of reducing noise caused by parasitics through the use of a grounded capacitor. A recent proposal introduces a Waveform generator utilizing commercially available ICs along with (extra X second generation current conveyor) EXCCII prototype [42] and five passive components. The circuit benefits from the capability of independently controlling oscillation frequency via passive elements.…”

A novel triangular wave quadrature oscillator without passive components for sinusoidal pulse width modulation DC-AC power conversion

“…Another square/triangular wave generator circuit was proposed lately using IC AD844 and five passive components. The oscillation frequency of the generator can achieve as low as 19.8 Hz and as high as 19.2 kHz [2]. In addition, an analog triangular wave quadrature oscillator using four Op-Amps with six resistors and two capacitors was suggested a few years ago.…”