Pub Date : 1994-10-11DOI: 10.1109/NORTHC.1994.643361
R. Schmid
Designing a DC coupled wide bandwidth amplifier with a low noise figure for a known source impedance creates problems when using op-amps or discrete transistor designs. This paper explores using today's wide bandwidth op-amps in a composite design to provide the best performance characteristics with the lowest noise figure for a 50 ohm source impedance.
{"title":"Composite low noise figure design [amplifier]","authors":"R. Schmid","doi":"10.1109/NORTHC.1994.643361","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.643361","url":null,"abstract":"Designing a DC coupled wide bandwidth amplifier with a low noise figure for a known source impedance creates problems when using op-amps or discrete transistor designs. This paper explores using today's wide bandwidth op-amps in a composite design to provide the best performance characteristics with the lowest noise figure for a 50 ohm source impedance.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115887347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-10-11DOI: 10.1109/NORTHC.1994.643321
C. Melear
The MPC505 microcontroller is the first implementation of a new family of microcontrollers that features a reduced instruction set (RISC) architecture based on the PowerPC architecture. The internal architecture of the MPC505 implements a 32-bit structure. This architecture provides 32-bit effective addresses, integer data types of 8-, 16-, and 32-bits and floating point data types of 32 and 64 bits. A simplified block diagram of the MPC505 is shown. The MPC505 is designed to operate at 3.3 volts. Along with power conservation features, such as clock speed reduction, the MPC505 can operate on a relatively modest power budget.
{"title":"The MPC505 RISC microcontroller","authors":"C. Melear","doi":"10.1109/NORTHC.1994.643321","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.643321","url":null,"abstract":"The MPC505 microcontroller is the first implementation of a new family of microcontrollers that features a reduced instruction set (RISC) architecture based on the PowerPC architecture. The internal architecture of the MPC505 implements a 32-bit structure. This architecture provides 32-bit effective addresses, integer data types of 8-, 16-, and 32-bits and floating point data types of 32 and 64 bits. A simplified block diagram of the MPC505 is shown. The MPC505 is designed to operate at 3.3 volts. Along with power conservation features, such as clock speed reduction, the MPC505 can operate on a relatively modest power budget.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115934686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-10-11DOI: 10.1109/NORTHC.1994.638964
J. Graham
This paper explores the difficulties experienced by small and medium sized companies when they attempt to implement an ISO Quality System. Most companies with 200 or fewer employees find it a significant challenge to make changes to their organization while continuing to operate their business. The key to a successful implementation program is to focus on simplicity and effectiveness. Without this focus, the company is destined to develop a marginally effective and excessively bureaucratic system.
{"title":"ISO implementation trials and tribulations in small companies","authors":"J. Graham","doi":"10.1109/NORTHC.1994.638964","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.638964","url":null,"abstract":"This paper explores the difficulties experienced by small and medium sized companies when they attempt to implement an ISO Quality System. Most companies with 200 or fewer employees find it a significant challenge to make changes to their organization while continuing to operate their business. The key to a successful implementation program is to focus on simplicity and effectiveness. Without this focus, the company is destined to develop a marginally effective and excessively bureaucratic system.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127806578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-10-11DOI: 10.1109/NORTHC.1994.638974
R. Dahlgren
This paper presents a review of current research in voltage stability and a new model encompassing three mechanisms of dynamic voltage collapse. These three mechanisms are on-load tap changer effects, load dynamics, and generator dynamics. A small power system model simulates the combination of these three effects, showing how a long-term voltage collapse occurs. Insight into the effects of adding generator dynamics to current models are discussed. Finally, the popular idea of ignoring the small changes in frequency while studying voltage stability is analyzed.
{"title":"Dynamic mechanisms of power system instability","authors":"R. Dahlgren","doi":"10.1109/NORTHC.1994.638974","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.638974","url":null,"abstract":"This paper presents a review of current research in voltage stability and a new model encompassing three mechanisms of dynamic voltage collapse. These three mechanisms are on-load tap changer effects, load dynamics, and generator dynamics. A small power system model simulates the combination of these three effects, showing how a long-term voltage collapse occurs. Insight into the effects of adding generator dynamics to current models are discussed. Finally, the popular idea of ignoring the small changes in frequency while studying voltage stability is analyzed.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129716009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-10-11DOI: 10.1109/NORTHC.1994.643330
R. Dinger
This paper presents software development techniques that enhance reuse. The techniques are discussed within an object oriented context, although some are applicable to any development approach. Object oriented technology often claims to solve productivity problems through the well-known principle of not reinventing the wheel. But technology alone is not enough to serve the problem. The solution is not so simple, there are no "silver bullets". The solutions lie primarily in improved approaches to software development.
{"title":"An object oriented approach to reuse","authors":"R. Dinger","doi":"10.1109/NORTHC.1994.643330","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.643330","url":null,"abstract":"This paper presents software development techniques that enhance reuse. The techniques are discussed within an object oriented context, although some are applicable to any development approach. Object oriented technology often claims to solve productivity problems through the well-known principle of not reinventing the wheel. But technology alone is not enough to serve the problem. The solution is not so simple, there are no \"silver bullets\". The solutions lie primarily in improved approaches to software development.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127734683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1994-09-27DOI: 10.1109/NORTHC.1994.643393
W. Schillhammer
A new technology has been developed which allows design engineers to quickly and affordably make flex circuit prototypes. Designed to operate in an engineering lab environment. this flex circuit manufacturing technology is completely self contained, requires no special ventilation or plumbing, and sits on top of a lab bench. This system requires no phototools and is capable of imaging 6 mil lines on copper clad polyimide, mylar, polyester, duroid, and FR4. This paper explores this new flex circuit technology. >
{"title":"Advances In Flex/rigid Flex Circuit Prototyping Technology","authors":"W. Schillhammer","doi":"10.1109/NORTHC.1994.643393","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.643393","url":null,"abstract":"A new technology has been developed which allows design engineers to quickly and affordably make flex circuit prototypes. Designed to operate in an engineering lab environment. this flex circuit manufacturing technology is completely self contained, requires no special ventilation or plumbing, and sits on top of a lab bench. This system requires no phototools and is capable of imaging 6 mil lines on copper clad polyimide, mylar, polyester, duroid, and FR4. This paper explores this new flex circuit technology. >","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125995243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-28DOI: 10.1109/NORTHC.1994.638953
D. Irvine, M. Narayanan
This report provides information on the latest robotics and vision system technologies affecting the manufacturing sector today. Machine vision, sensors, artificial intelligence, and expert systems are all explored. Applications and examples of actual implementations of these technologies are also given.
{"title":"Robotics and vision systems-an overview","authors":"D. Irvine, M. Narayanan","doi":"10.1109/NORTHC.1994.638953","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.638953","url":null,"abstract":"This report provides information on the latest robotics and vision system technologies affecting the manufacturing sector today. Machine vision, sensors, artificial intelligence, and expert systems are all explored. Applications and examples of actual implementations of these technologies are also given.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1993-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123466923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/NORTHC.1994.643341
L. Green
SPICE is the most commonly used analog circuit simulator in the world. Today, many commercial extended versions of SPICE support new device models and extended functions. However, a failure to understand the inherent limitations of the simulation algorithms and model parameters can lead to design problems. This paper presents case histories showing the impact of simulation limitations and practical ways to work around them.
{"title":"SPICE: avoiding the pitfalls","authors":"L. Green","doi":"10.1109/NORTHC.1994.643341","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.643341","url":null,"abstract":"SPICE is the most commonly used analog circuit simulator in the world. Today, many commercial extended versions of SPICE support new device models and extended functions. However, a failure to understand the inherent limitations of the simulation algorithms and model parameters can lead to design problems. This paper presents case histories showing the impact of simulation limitations and practical ways to work around them.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115347032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/NORTHC.1994.643383
C. Melear
All microcontroller (MCU) devices have a Central Processing Unit (CPU), a Clock, Program Memory, Modifiable Memory and Input/Output Lines. Many microcontrollers operate in a “single chip” mode where there is no reliance on external memory elements. Others require only random access memory (RAM) or read only memory (ROM) to operate. It is possible to have a microcontroller with only RAM provided there is some means to download a program into the RAM and then direct the CPU to start program execution at some entry point in the program. It is also possible to have a microcontroller with only ROM. Of course, there would be no ability to use a “stack” oriented program which uses subroutine calls or interrupt routines because ROM cannot be written to by the program.Also, data manipulation would be limited to the MCU’s internal registers. For the purposes of this paper, it will be assumed that there is sufficient ROM and RAM available to the microcontroller device so that meaningful programs can be stored on t h e chip as well has allowing appropriate data manipulation. The purpose of this paper is to discuss novel uses of memory as well as new memory types, such as Electrically Erasable Programmable Read Only Memory (EEPROM), that have successfully been integrated into microcontroller chips. The first section of this paper will deal with new memory types and the latter sections will discuss novel uses of memory. Conventional static RAM and ROM will only be mentioned here for the sake of completeness.
{"title":"Integrated Memory Elements On Microcontroller Devices","authors":"C. Melear","doi":"10.1109/NORTHC.1994.643383","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.643383","url":null,"abstract":"All microcontroller (MCU) devices have a Central Processing Unit (CPU), a Clock, Program Memory, Modifiable Memory and Input/Output Lines. Many microcontrollers operate in a “single chip” mode where there is no reliance on external memory elements. Others require only random access memory (RAM) or read only memory (ROM) to operate. It is possible to have a microcontroller with only RAM provided there is some means to download a program into the RAM and then direct the CPU to start program execution at some entry point in the program. It is also possible to have a microcontroller with only ROM. Of course, there would be no ability to use a “stack” oriented program which uses subroutine calls or interrupt routines because ROM cannot be written to by the program.Also, data manipulation would be limited to the MCU’s internal registers. For the purposes of this paper, it will be assumed that there is sufficient ROM and RAM available to the microcontroller device so that meaningful programs can be stored on t h e chip as well has allowing appropriate data manipulation. The purpose of this paper is to discuss novel uses of memory as well as new memory types, such as Electrically Erasable Programmable Read Only Memory (EEPROM), that have successfully been integrated into microcontroller chips. The first section of this paper will deal with new memory types and the latter sections will discuss novel uses of memory. Conventional static RAM and ROM will only be mentioned here for the sake of completeness.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128396879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/NORTHC.1994.643373
A. Gringmuth
The author points out that there is now an apparent acceptance by the auto industries in the world of the electric car event and large financial commitments to its developments. What is still prominently missing is the availability and mass production of high performance batteries. The other major components which also require a considerable development effort include: 1) the propulsion system consisting of motor and transmission; 2) speed or power controller of battery power to motor; 3) power storage devices including fly wheels; 4) on board charging system, including the 12 V car system; and 5) instrumentation, power brakes and protection.
{"title":"Electric Vehicle Components","authors":"A. Gringmuth","doi":"10.1109/NORTHC.1994.643373","DOIUrl":"https://doi.org/10.1109/NORTHC.1994.643373","url":null,"abstract":"The author points out that there is now an apparent acceptance by the auto industries in the world of the electric car event and large financial commitments to its developments. What is still prominently missing is the availability and mass production of high performance batteries. The other major components which also require a considerable development effort include: 1) the propulsion system consisting of motor and transmission; 2) speed or power controller of battery power to motor; 3) power storage devices including fly wheels; 4) on board charging system, including the 12 V car system; and 5) instrumentation, power brakes and protection.","PeriodicalId":218454,"journal":{"name":"Proceedings of NORTHCON '94","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126798626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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