Dual-Mode Controlled Pulse Width Monostable Multivibrator Using DVCCs

2015 ◽  
Vol 24 (09) ◽  
pp. 1550143 ◽  
Author(s):  
Hung-Chun Chien
Keyword(s):  
Integrated Circuits ◽  
Pulse Width ◽  
Experimental Tests ◽  
Output Pulse ◽  
Voltage Source ◽  
Current Conveyors ◽  
Monostable Multivibrator ◽  
Dual Mode ◽  
Passive Components ◽  
Theoretical Analyses

This paper proposes a dual-mode controlled pulse width monostable multivibrator used for analogue signal processing applications that employs two differential voltage current conveyors (DVCCs), four passive components and an analogue switch. Unlike the traditional operational-amplifier-based monostable multivibrators, the proposed circuit contributes a dual-mode controlled scheme for adjusting the output pulse width through a voltage source and a grounded resistor. This paper discusses several previous designs and presents the circuit operations, related governing formulas, non-ideal effect problems, design considerations, and experimental examples of the proposed circuit. A prototype circuit was implemented, and commercially integrated circuits and discrete passive components were used to execute the experimental tests. The features of the proposed circuit are discussed, and the experimental results indicated that the circuit is feasibly used in dual-mode controlled pulse width for the output pulse and were consistent with those of the theoretical analyses.

Switch-Controllable Full-Phase Operation Precision Half-Wave Rectifier Using a Single OTRA

2016 ◽  
Vol 25 (07) ◽  
pp. 1650070 ◽  
Author(s):  
Hung-Chun Chien
Keyword(s):  
Integrated Circuits ◽  
Semiconductor Manufacturing ◽  
Experimental Tests ◽  
Cmos Process ◽  
Process Technology ◽  
Passive Components ◽  
Active Devices ◽  
Design Considerations ◽  
Half Wave ◽  
Theoretical Analyses

This paper proposes designing a precision rectification circuit by using a single operational transresistance amplifier (OTRA). The proposed circuit is a switch-controllable OTRA-based full-phase operation precision half-wave rectifier, which can rectify an input signal to yield four-phase half-wave rectified output signals. Compared with existing designs, the advantage of the proposed circuit is that all of the possible rectified outputs of a half-wave rectifier can be obtained in one configuration. This paper first reviews previously reported half-wave precision rectifiers consisting of various active devices and the proposed OTRA-based precision half-wave rectifier; subsequently, an analysis of non-ideal effects and design considerations are presented. Computer simulations of the proposed circuit were conducted for verifying the feasibility of the circuit by using the Taiwan Semiconductor Manufacturing Company (TSMC) 0.35-[Formula: see text]m CMOS process technology. For practical circuit measurements, a prototype circuit was implemented, and commercially integrated circuits (AD844ANs) and discrete passive components were used to conduct experimental tests. The simulation and experimental results exhibited satisfactory agreement with those of theoretical analyses.

A NOVEL CURRENT-TUNABLE MONOSTABLE MULTIVIBRATOR USING SINGLE DISO-OTA

2013 ◽  
Vol 22 (02) ◽  
pp. 1250089 ◽  
Author(s):  
HUNG-CHUN CHIEN
Keyword(s):  
Pulse Height ◽  
Experimental Tests ◽  
Output Pulse ◽  
Monostable Multivibrator ◽  
Passive Components ◽  
Single Output ◽  
Negative Edge ◽  
Transconductance Amplifier ◽  
Compact Topology ◽  
Tunable Property

This paper proposes a novel monostable multivibrator featuring compact topology and current-tunable property. The proposed circuit was composed of a single differential input single output operational transconductance amplifier (DISO-OTA) with a few passive components. It was operated by a negative-edge triggering signal to generate an output pulse. The pulse height and width were tunable by the bias current of DISO-OTA and the external resistors. The proposed scheme is more compact than the existing topologies. This paper presents the circuit operations and a discussion of the non-ideal issues and design considerations. To demonstrate the feasibility of the proposed circuit, a prototype circuit built with commercially available DISO-OTA IC was used to execute the experimental tests. Is-Spice simulation and experimental results were consistent with theoretical analysis.

TUNABLE WAVEFORM GENERATORS USING SINGLE DUAL-CURRENT OUTPUT OTAs

2008 ◽  
Vol 17 (06) ◽  
pp. 1193-1202 ◽  
Author(s):  
YU-KANG LO ◽  
HUNG-CHUN CHIEN ◽  
HUANG-JEN CHIU
Keyword(s):  
Pulse Width ◽  
Experimental Results ◽  
Pulse Waveform ◽  
Operational Transconductance Amplifier ◽  
Switching Element ◽  
Passive Components ◽  
Current Output ◽  
Transconductance Amplifier ◽  
Theoretical Analyses

Two novel electronic-tunable waveform generators using a single dual-current output operational transconductance amplifier (DO-OTA) with a few passive components are proposed in this paper. The first one can produce symmetrical square and triangular waveforms simultaneously. Based on the first topology, an additional N-MOS is adopted as a switching element to construct the second proposed circuit, which can generate a pulse waveform by a negative triggering signal. The repetitive frequency and pulse width of the presented circuits are adjustable by external passive components. Moreover, the output levels of the proposed circuits can be controlled by the DO-OTA's bias currents. These waveform generators feature more compact configurations compared to the existing designs. Experimental results are close to the theoretical analyses.

Mode-locked ring laser with output pulse width of 0.4 ps

1999 ◽  
Vol 48 (6) ◽  
pp. 1018-1022 ◽  
Author(s):  
K. Kuroda ◽  
H. Takakura
Keyword(s):  
Pulse Width ◽  
Ring Laser ◽  
Output Pulse

Adaptive Control of Pulse Width Modulation Voltage-Source Rectifier with Disturbance Signals

2013 ◽  
Vol 385-386 ◽  
pp. 977-980
Author(s):  
Bao Bin Liu
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Controller Design ◽  
Adaptive Controller ◽  
Voltage Source ◽  
Robust Controller ◽  
Reference Velocity ◽  
Velocity Tracking ◽  
Modulation Voltage ◽  
Robust Controller Design

A nonlinear adaptive controller is proposed for the design of pulse width modulation voltage-source rectifier with disturbance signals of harmonics to achieve reference velocity tracking. The procedure of the robust controller design is developed via improved backstepping method. With the proposed controller, PWM voltage-source rectifiers can guarantee accuracy of output voltage tracking. Global asymptotic stability of the closed-loop system has been proved. The simulation results demonstrate effectiveness of the presented method.

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