scholarly journals Synthesis of a Novel Low-Component Programmable Sinusoidal Oscillator

2003 ◽  
Vol 26 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Sa'ad Muhammad Al-Shahrani
Keyword(s):  
Excellent Agreement ◽  
Operational Amplifier ◽  
Operational Transconductance Amplifier ◽  
Current Feedback ◽  
Transconductance Amplifier ◽  
Sinusoidal Oscillator ◽  
Current Feedback Operational Amplifier ◽  
Synthesis Approach

A novel circuit is presented for realizing a sinusoidal oscillator. The proposed circuit, developed through a true synthesis approach, uses one current-feedback operational amplifier (CFOA), one operational transconductance amplifier (OTA), three grounded capacitors and one floating resistor. The proposed circuit enjoys several attractive features. Practical results, in excellent agreement with the presented theory, are included.

A Novel Floating/Grounded Meminductor Emulator

2020 ◽  
Vol 29 (15) ◽  
pp. 2050247 ◽  
Author(s):  
Hasan Sozen ◽  
Ugur Cam
Keyword(s):  
Hysteresis Loop ◽  
Operational Amplifier ◽  
Current Conveyors ◽  
Current Feedback ◽  
Transconductance Amplifier ◽  
Additional Control ◽  
Pinched Hysteresis Loop ◽  
Terminal Element ◽  
Current Feedback Operational Amplifier ◽  
Pinched Hysteresis

Meminductor is a nonlinear two-terminal element with storage energy and memory ability. To date, meminductor element is not available commercially as memristor and memcapacitor are. Therefore, it is of great significance to implement a meminductor emulator for breadboard experiment. In this paper, a flux-controlled floating/grounded meminductor emulator without a memristor is presented. It is built with commercially available off-the-shelf electronic devices. It consists of single operational transconductance amplifier (OTA), single multiplier, two second-generation current conveyors (CCIIs), single current-feedback operational amplifier (CFOA) and single operational amplifier. Using OTA device introduces an additional control parameter besides frequency and amplitude values of applied voltage to control the area of pinched hysteresis loop of meminductor. Mathematical model of proposed emulator circuit is given to describe the behavior of meminductor circuit. The breadboard experiment is performed using CA3080, AD844, AD633J and LM741 for OTA, CCII–CFOA, multiplier and operational amplifier, respectively. Simulation and experimental test results are given to verify the theoretical analyses. Frequency-dependent pinched hysteresis loop is maintained up to 5 kHz. The presented meminductor emulator tends to work as ordinary inductor for higher frequencies.

scholarly journals A Minimum Component Grounded-Capacitor CFOA-Based RC Oscillator

1997 ◽  
Vol 19 (4) ◽  
pp. 247-251 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Sa'ad Muhammad Al-Shahrani
Keyword(s):  
Operational Amplifier ◽  
Single Frequency ◽  
Current Feedback ◽  
Oscillator Circuit ◽  
Sinusoidal Oscillator ◽  
Passive Sensitivity ◽  
Current Feedback Operational Amplifier

A minimum-component grounded-capacitor single-frequency RC-sinusoidal oscillator circuit using the current feedback operational amplifier (CFOA) is presented. The circuit uses a single CFOA, two resistors, and two grounded capacitors. The circuit enjoys low active and passive sensitivity characteristics.

scholarly journals New Grounded-Capacitor Sinusoidal Oscillators Using the Current-Feedback-Amplifier Pole

1998 ◽  
Vol 21 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Muhammad Taher Abuelma’atti ◽  
Husain Abdullah Al-Zaher
Keyword(s):  
Operational Amplifier ◽  
Experimental Results ◽  
Current Feedback ◽  
Sinusoidal Oscillators ◽  
Feedback Amplifier ◽  
Current Feedback Amplifier ◽  
Sinusoidal Oscillator ◽  
Current Feedback Operational Amplifier ◽  
Oscillator Circuits

New current-feedback-operational amplifier (CFOA)-pole-based sinusoidal oscillator circuits are presented. Each circuit uses two CFOAs, two (or three) grounded capacitors and/or resistors. Experimental results are included.

scholarly journals Dual Output Sinusoidal Oscillator Using Second Generation Current Controlled Conveyor

2019 ◽  
Vol 23 (2) ◽  
Author(s):  
Avireni Srinivasulu ◽  
Syed Zahiruddin ◽  
Musala Sarada
Keyword(s):  
Integrated Circuits ◽  
Second Generation ◽  
Supply Voltage ◽  
Harmonic Distortion ◽  
Current Feedback ◽  
Transconductance Amplifier ◽  
Sinusoidal Oscillator ◽  
Montecarlo Method ◽  
Current Feedback Operational Amplifier ◽  
Low Supply Voltage

Second Generation Current Controlled Conveyor (CCCII) based tunable Dual Output Sinusoidal Oscillator (MSO) is proposed. It consists of three CCCIIs, a resistor and two grounded capacitors. By tuning external DC bias current, the oscillator frequency and commencement of its oscillations are controlled electronically. The proposed circuit is verified using PSPICE simulator and also on laboratory breadboard using commercially available integrated circuits Current Feedback Operational Amplifier (AD844AN) and Operational Transconductance Amplifier (LM13600) at a supply rail voltage of ±6 V. Further its nonlinearities, sensitivities, performance characteristics are also verified. Comparison of the proposed topology with the ongoing methods are also undertaken. PSPICE simulation results are verified with a low supply voltage of ±1 V, temperature analysis, analysis by using Montecarlo method and finally Total Harmonic Distortion (THD) is also demonstrated.

scholarly journals Active-Only Sinusoidal Oscillator Circuits

2001 ◽  
Vol 24 (4) ◽  
pp. 223-232 ◽  
Author(s):  
Muhammad Taher Abuelmaatti ◽  
Muhammad Ali Al-Qahtani
Keyword(s):  
Operational Amplifier ◽  
Current Control ◽  
Current Feedback ◽  
Operational Transconductance Amplifiers ◽  
Sinusoidal Oscillator ◽  
Condition Of Oscillation ◽  
Transconductance Amplifiers ◽  
Current Feedback Operational Amplifier ◽  
Oscillator Circuits

Two new active-only sinusoidal oscillator circuits are proposed. The first circuit uses one current feedback operational amplifier (CFOA) and four operational transconductance amplifiers (OTAs). The second circuit uses only four OTAs. Without using any external passive elements, voltage (or current) control of the frequency and condition of oscillation, of the two circuits, can be achieved by adjusting the bias currents of the OTAs. The proposed circuits enjoy low sensitivities.

scholarly journals Low-Voltage CMOS Current Feedback Operational Amplifier and Its Application

ETRI Journal ◽  
2007 ◽  
Vol 29 (2) ◽  
pp. 212-218 ◽  
Author(s):  
Soliman A. Mahmoud ◽  
Ahmed H. Madian ◽  
Ahmed M. Soliman
Keyword(s):  
Operational Amplifier ◽  
Low Voltage ◽  
Current Feedback ◽  
Current Feedback Operational Amplifier
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