scholarly journals Temperature independent current conveyor precision full-wave rectifier for low-level signal

2009 ◽  
Vol 22 (1) ◽  
pp. 117-123
Author(s):  
Slobodan Djukic
Keyword(s):  
Input Signal ◽  
Transfer Characteristic ◽  
Current Conveyor ◽  
Current Steering ◽  
Output Stage ◽  
Zero Crossing ◽  
Low Level ◽  
Class A ◽  
Full Wave ◽  
Current Mirrors

A circuit that provides precision rectification low-level input signal with low temperature sensitivity is presented in this paper. It utilizes an improved second type current conveyor based around current-steering output stage and voltage biased silicon diodes, rather than more usual current mirrors. Proposed design of the precision rectifier ensures good current transfer linearity in the range that satisfy class A of the amplifier and good voltage transfer characteristic for low level signals. Distortion during the zero crossing of the input signal is practically eliminated. Design of the proposed rectifier is realized with usual components that can be bought in the market. .

scholarly journals The analysis of full-wave wide-band precision rectifier with modified second type current conveyor

2007 ◽  
Vol 20 (2) ◽  
pp. 215-221 ◽  
Author(s):  
Slobodan Ðukic
Keyword(s):  
Operational Amplifier ◽  
Wide Band ◽  
Current Conveyor ◽  
Current Sensing ◽  
Full Wave ◽  
Current Mirrors ◽  
Wide Range ◽  
Supply Current

The full-wave wide-band precision rectifier with modified second type current conveyor (MCCII), realized with the operational amplifier and three current mirrors (CM), is presented in this paper. The model of operational amplifier is adapted in such a way that it is possible to use supply-current sensing in supply rails of operational amplifier with SPICE program. Wilson's realization for current mirrors is used for precise current reproduction in a wide range of the amplitude values as well as frequencies.

A full-wave rectifier using a current conveyor and current mirrors

2001 ◽  
Vol 88 (7) ◽  
pp. 751-758 ◽  
Author(s):  
Adisak Monpapassorn ◽  
Kobchai Dejhan ◽  
Fusak Cheevasuvit
Keyword(s):  
Current Conveyor ◽  
Full Wave ◽  
Current Mirrors ◽  
A Current

scholarly journals Voltage mode electronically tunable full-wave rectifier

2017 ◽  
Vol 68 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Predrag B. Petrović ◽  
Milan Vesković ◽  
Slobodan Đukić
Keyword(s):  
Signal Processing ◽  
Power Consumption ◽  
Harmonic Distortion ◽  
Input Voltage ◽  
Current Conveyor ◽  
Output Current ◽  
Zero Crossing ◽  
Full Wave ◽  
Voltage Signal ◽  
Electronically Tunable

Abstract The paper presents a new realization of bipolar full-wave rectifier of input sinusoidal signals, employing one MO-CCCII (multiple output current controlled current conveyor), a zero-crossing detector (ZCD), and one resistor connected to fixed potential. The circuit provides the operating frequency up to 10 MHz with increased linearity and precision in processing of input voltage signal, with a very low harmonic distortion. The errors related to the signal processing and errors bound were investigated and provided in the paper. The PSpice simulations are depicted and agree well with the theoretical anticipation. The maximum power consumption of the converter is approximately 2.83 mW, at ±1.2 V supply voltages.

High-precision current conveyor implementation employing a current-steering output stage

2006 ◽  
Vol 93 (10) ◽  
pp. 653-662 ◽  
Author(s):  
B. Wilson ◽  
M. Al-Gahtani ◽  
J. Vosper ◽  
R. Deloughry
Keyword(s):  
High Precision ◽  
Current Conveyor ◽  
Current Steering ◽  
Output Stage ◽  
A Current

scholarly journals Indonesia's Interference in Translating Texts into English Texts

2020 ◽  
Vol 7 (1) ◽  
pp. 26
Author(s):  
Etika Ariyani
Keyword(s):  
Mother Tongue ◽  
Sampling Technique ◽  
Target Language ◽  
Past Tense ◽  
Source Language ◽  
Low Level ◽  
Class A ◽  
High Level ◽  
Level 2 ◽  
Bahasa Indonesia

This research is aimed: (1) to reveal that interference of bahasa Indonesia interrupt when the students at the sixth semester of FKIP in Muhammadiyah University of Mataram translate the English narrative past tense text; (2) to know the kinds of factors interupted the students’ in translating English narrative the text. The population of study were students in FKIP Muhammadiyah University of Mataram. They consist of three classes from class A to C. The number of population were 64 students so, the writer took only the 17 students to be sample, by using purposive sampling technique. The results of research showed that: (1) among 17 students in class A do some intereferences, they have less ability to construct the translation target text into the accuracy, acceptable and understandable/readable sentences by the reader. Moreover, there are two main Indonesian interference found by the researcher, they were morphological interference by misunderstand of using past tense sentences and sintactical interference by unstructural sentence in the target text, (2) The students’ only could get the range from 4 score to 8 score, where 5 students get very poor, 4 students get poor, 2 students get fair, 3 students get fairly good, 3 students get good. The students’ translation percentage for each standard such as accuracy is 16,5%, acceptable is 10,11%, readability is 5,47% and for total all of students’ mean score is 51,9%, where it took on poor score of translation (3) There are 4 factors made the students difficult to translate the target text, they were 1. Disloyalty of the speakers and receiver 2 Insufficient of vocabulary in translating the source language into target language, 3. The prestige of the source language and style, 4. Daily habits in the mother tongue influence target text, (4) The students’ translations result are 6 students got score of 0-3 namely very low level, 6 students got score of 5,5-6,5, who categorized as the low level, 2 students got the range score of 6,6-7,5, who categorized “sufficient level”, there are 3 students got this “high level” with the range score of 7,6-9,5, and no one getting the “highest level” score in the range of 9,6-10. 

scholarly journals PROMOTIING LEARNER AUTONOMY: TEACHERS, APPLICATION IN MANAGING CLASS (A STUDY AT SMA ADABIAH, PADANG)

2017 ◽  
Vol 3 (1) ◽  
pp. 36-44
Author(s):  
Putri Mulyani ◽  
Riny D. Sani
Keyword(s):  
Video Recording ◽  
Learner Autonomy ◽  
Classroom Observations ◽  
English Teacher ◽  
Low Level ◽  
Class A ◽  
Data Process ◽  
Video Recorder ◽  
Field Note ◽  
Field Notes

This study aims to look how the teachers applied the strategies used to promote learner autonomy in the classroom. The research design was descriptive using qualitative approach. Source of the data from this study is an English teacher in high school Adabiah Padang totaling three teachers. In collecting the data, the researcher used observation checklist, field note and video recorder. When observed by using a checklist and field notes, researchers looked at all the activities of teachers and checklist based on indicators of the strategies to promote leaner autonomy in the classroom. Observations were also supported with video recording in order to help the researcher in the data process. There are six indicators used in this study, namely leaner goals, focusing on student's independence from the teacher, providing opportunities for the students to learn from each other, leaner strategy, providing opportunities for self-peer correction and reflection on learning. After analyzing or data process obtained from the use of such instruments, the researcher found that only two of the six indicators are often used by two the teachers from the three teachers that observed were providing opportunities from the student's to learn from each other and providing self-peer opportunities for correction. The percentage of promoting leaner autonomy: teachers' application in managing class at SMA Adabiah Padang, for teacher A is low level (33,3%), for teacher B is low level (33 ,3%) and for teacher C is very low (1 6,6%).

CMOS full-wave operational transconductance rectifier with improved DC transfer characteristic

1992 ◽  
Vol 28 (3) ◽  
pp. 333 ◽  
Author(s):  
P. Heim ◽  
F. Krummenacher ◽  
E. Vittoz
Keyword(s):  
Transfer Characteristic ◽  
Full Wave

A SIMPLE 1.5 V RAIL-TO-RAIL CMOS CURRENT CONVEYOR

2007 ◽  
Vol 16 (04) ◽  
pp. 627-639 ◽  
Author(s):  
VARAKORN KASEMSUWAN ◽  
WEERACHAI NAKHLO
Keyword(s):  
Power Dissipation ◽  
Harmonic Distortion ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Common Source ◽  
Output Stage ◽  
Circuit Performance ◽  
Rail To Rail ◽  
Source Follower ◽  
Transfer Error

A simple 1.5 V rail-to-rail CMOS current conveyor is presented. The circuit is developed based on a complementary source follower with a common-source output stage. The circuit is designed using a 0.13 μm CMOS technology and HSPICE is used to verify the circuit performance. The current conveyor exhibits low impedance at terminal X (7.2 Ω) and can drive ± 0.6 V to the 300 Ω with the total harmonic distortion of 0.55% at the operating frequency of 3 MHz. The voltage transfer error (between the Y and X terminals) and current transfer error (between the X and Y terminals) are small (-0.2 dB). The power dissipation and bandwidth are 532 μW and over 300 MHz, respectively.

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