An automated circuit design and test system for use by university students

1990 ◽  
Vol 7 (1) ◽  
pp. 19
Author(s):  
R.A. Cobley
Keyword(s):  
University Students ◽  
Circuit Design ◽  
Test System ◽  
Automated Circuit Design

scholarly journals GateRL: Automated Circuit Design Framework of CMOS Logic Gates Using Reinforcement Learning

Electronics ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1032
Author(s):  
Hyoungsik Nam ◽  
Young In Kim ◽  
Jina Bae ◽  
Junhee Lee
Keyword(s):  
Reinforcement Learning ◽  
Circuit Design ◽  
Logic Gates ◽  
Connection Matrix ◽  
Design Framework ◽  
Network Layers ◽  
Learning Speed ◽  
Fully Connected ◽  
Automated Circuit Design ◽  
Circuit Configuration

This paper proposes a GateRL that is an automated circuit design framework of CMOS logic gates based on reinforcement learning. Because there are constraints in the connection of circuit elements, the action masking scheme is employed. It also reduces the size of the action space leading to the improvement on the learning speed. The GateRL consists of an agent for the action and an environment for state, mask, and reward. State and reward are generated from a connection matrix that describes the current circuit configuration, and the mask is obtained from a masking matrix based on constraints and current connection matrix. The action is given rise to by the deep Q-network of 4 fully connected network layers in the agent. In particular, separate replay buffers are devised for success transitions and failure transitions to expedite the training process. The proposed network is trained with 2 inputs, 1 output, 2 NMOS transistors, and 2 PMOS transistors to design all the target logic gates, such as buffer, inverter, AND, OR, NAND, and NOR. Consequently, the GateRL outputs one-transistor buffer, two-transistor inverter, two-transistor AND, two-transistor OR, three-transistor NAND, and three-transistor NOR. The operations of these resultant logics are verified by the SPICE simulation.

scholarly journals A COMBINED SIMPLEX–TRUST-REGION METHOD FOR ANALOG CIRCUIT OPTIMIZATION

2008 ◽  
Vol 17 (01) ◽  
pp. 123-140
Author(s):  
ÁRPÁD BŰRMEN ◽  
TADEJ TUMA ◽  
IZTOK FAJFAR
Keyword(s):  
Integrated Circuits ◽  
Circuit Design ◽  
Analog Circuit ◽  
Trust Region Method ◽  
Trust Region ◽  
Optimization Methods ◽  
Circuit Optimization ◽  
Convergence Results ◽  
Common Ailment ◽  
Automated Circuit Design

The analog-integrated circuits industry is exerting increasing pressure to shorten the analog circuit design time. This pressure is put primarily on the analog circuit designers that in turn demand automated circuit design tools evermore vigorously. Such tools already exist in the form of circuit optimization software packages but they all suffer a common ailment — slow convergence. Even taking into account the increasing computational power of modern computers the convergence times of such optimization tools can range from a few days to even weeks. Different authors have tried diverse approaches for speeding up the convergence with varying success. In this paper authors propose a combined optimization algorithm that attempts to improve the speed of convergence by exploiting the positive properties of the underlying optimization methods. The proposed algorithm is tested on a number of test cases and the convergence results are discussed.

Study on Fault Testing System of Photovoltaic Cells

2014 ◽  
Vol 1022 ◽  
pp. 151-154
Author(s):  
Yu Chuan Jiang ◽  
Fang Quan Yang ◽  
Bao Gang Sun
Keyword(s):  
Circuit Design ◽  
Data Aggregation ◽  
Serial Communication ◽  
Photovoltaic Cells ◽  
Photovoltaic Cell ◽  
Test System ◽  
Wireless Sensor ◽  
Testing System ◽  
Fault Testing ◽  
Power Circuit

This paper designed a photovoltaic cell fault test system to study the design of wireless sensor networks and related technologies in this article, including the two main parts of the data collection and data aggregation node node design, through the design of the circuit to collect voltammetry data by DHT22 digital temperature and humidity sensors and related peripheral circuits to collect temperature, humidity and light intensity data presented content power circuit design serial communication circuit, and anti-jamming measures.

The Design of Automatic Test System for Units of Police Communications Equipments

2014 ◽  
Vol 644-650 ◽  
pp. 1003-1006
Author(s):  
Qing Liu ◽  
Yong Wang
Keyword(s):  
Circuit Design ◽  
Test System ◽  
Test Results ◽  
Application Development ◽  
Automatic Test ◽  
Specific Test ◽  
Automatic Test System ◽  
Test Efficiency ◽  
Test Requirements ◽  
Hardware Circuit

Through the analysis of specific test requirements, this topic design the overall architecture of the automatic test system. In the hardware design, this topic mainly discusses the hardware circuit design of the interface adapter. In the software design, this topic mainly discusses the secondary package of instrument module driver, the application development of interface adapter driver and test software. Finally, this system have been applied in the field more than once. It turns out that this system is able to test the performance indicators of units of radio, and the test results are accurate, the test efficiency is also high.

A Study of Spinning Metering Pump Flow Rate Testing System

2013 ◽  
Vol 680 ◽  
pp. 501-504
Author(s):  
Chun Jin Lu ◽  
Qiang Gao
Keyword(s):  
Circuit Design ◽  
Flow Rate ◽  
Control Method ◽  
Test System ◽  
System Structure ◽  
Testing System ◽  
Pump Flow ◽  
Pump Flow Rate ◽  
Rate Testing ◽  
Pump Test

This paper describes spinning metering pump test system structure, electrical control method, slave control circuit design and its software solution. This system has been proved it can test the metering pump flow rate correctly and stably, the efficiency and precision has been improved as well via hardware and software integration debugging.

Immunogold labeling of CMP-KDO synthetase produced by recombinant E. Coli cells

1987 ◽  
Vol 45 ◽  
pp. 924-925
Author(s):  
F. A. Durum ◽  
R. G. Goldman ◽  
T. J. Bolling ◽  
M. F. Miller
Keyword(s):  
Inclusion Bodies ◽  
Large Scale ◽  
Recombinant Dna ◽  
Test System ◽  
Cell Protein ◽  
Gram Negative Bacteria ◽  
Cytoplasmic Inclusions ◽  
Isolation And Purification ◽  
E Coli ◽  
Low Concentrations

CMP-KDO synthetase (CKS) is an enzyme which plays a key role in the synthesis of LPS, an outer membrane component unique to gram negative bacteria. CKS activates KDO to CMP-KDO for incorporation into LPS. The enzyme is normally present in low concentrations (0.02% of total cell protein) which makes it difficult to perform large scale isolation and purification. Recently, the gene for CKS from E. coli was cloned and various recombinant DNA constructs overproducing CKS several thousandfold (unpublished data) were derived. Interestingly, no cytoplasmic inclusions of overproduced CKS were observed by EM (Fig. 1) which is in contrast to other reports of large proteinaceous inclusion bodies in various overproducing recombinant strains. The present immunocytochemical study was undertaken to localize CKS in these cells.Immune labeling conditions were first optimized using a previously described cell-free test system. Briefly, this involves soaking small blocks of polymerized bovine serum albumin in purified CKS antigen and subjecting them to various fixation, embedding and immunochemical conditions.

Real Ear Sound Pressure Levels Developed by Three Portable Stereo System Earphones

1992 ◽  
Vol 1 (4) ◽  
pp. 52-55 ◽  
Author(s):  
Gail L. MacLean ◽  
Andrew Stuart ◽  
Robert Stenstrom
Keyword(s):  
High Frequency ◽  
Sound Pressure ◽  
Low Frequency ◽  
Test System ◽  
Output Frequency ◽  
Frequency Effects ◽  
Adult Men ◽  
Frequency Responses ◽  
Significant Difference ◽  
Sound Pressure Levels

Differences in real ear sound pressure levels (SPLs) with three portable stereo system (PSS) earphones (supraaural [Sony Model MDR-44], semiaural [Sony Model MDR-A15L], and insert [Sony Model MDR-E225]) were investigated. Twelve adult men served as subjects. Frequency response, high frequency average (HFA) output, peak output, peak output frequency, and overall RMS output for each PSS earphone were obtained with a probe tube microphone system (Fonix 6500 Hearing Aid Test System). Results indicated a significant difference in mean RMS outputs with nonsignificant differences in mean HFA outputs, peak outputs, and peak output frequencies among PSS earphones. Differences in mean overall RMS outputs were attributed to differences in low-frequency effects that were observed among the frequency responses of the three PSS earphones. It is suggested that one cannot assume equivalent real ear SPLs, with equivalent inputs, among different styles of PSS earphones.

Viewing music videos: Emotion and viewer interpretation

2002 ◽  
Vol 14 (2) ◽  
pp. 69-79 ◽  
Author(s):  
Joan M. Preston ◽  
Michael Eden
Keyword(s):  
University Students ◽  
Emotional Content ◽  
Music Videos ◽  
Music Video ◽  
Mediating Factors ◽  
Comparative Media

Abstract. Music video (MV) content is frequently measured using researcher descriptions. This study examines subjective or viewers’ notions of sex and violence. 168 university students watched 9 mainstream MVs. Incidence counts of sex and violence involve more mediating factors than ratings. High incidents are associated with older viewers, higher scores for Expressivity, lower scores for Instrumentality, and with video orders beginning with high sex and violence. Ratings of sex and violence are associated with older viewers and lower scores for Instrumentality. For sex MVs, inexperienced viewers reported higher incidents and ratings. Because MVs tend to be sexier but less violent than TV and film, viewers may also use comparative media standards to evaluate emotional content MVs.

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