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1 – 10 of over 1000Busi Rambabu and Y. Srinivasa Rao
The purpose of this paper is to study high-voltage interactions in polymer thick-film resistors, namely, polyvinyl chloride (PVC)-graphite thick-film resistors, and their…
Abstract
Purpose
The purpose of this paper is to study high-voltage interactions in polymer thick-film resistors, namely, polyvinyl chloride (PVC)-graphite thick-film resistors, and their applications in universal trimming of these resistors.
Design/methodology/approach
The authors applied high voltages in the form of pulses and impulses of various pulse durations and with different amplitudes to polymer thick-film resistors and observed the variation of resistance of these resistors with high voltages.
Findings
The paper finds that high voltages can be used for trimming of polymer thick-film resistors in both directions, i.e. upwards and downwards.
Research limitations/implications
The research implication of this paper is that polymer thick-film resistors can be trimmed downwards or upwards practically using this method.
Practical implications
The practical implications of this paper is that one can trim the polymer thick-film resistors, namely, PVC–graphite thick-film resistors, in both directions, i.e. upwards and downwards, by using this method.
Originality/value
The value of the paper is in showing that high voltages can be used to trim downwards and also upwards in the case of polymer thick-film resistors. This type of trimming is called universal trimming, developed first time for polymer thick-film resistors.
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Kandagaddla Venkatasubrahmanayam, Busi Ram Babu, Billa Poornaiah and Yarravarapu Srinivasa Rao
The purpose of this paper is to study the microwave interactions in polymer thick film resistors, namely, polyvinyl chloride (PVC)-graphite thick film resistors, and its…
Abstract
Purpose
The purpose of this paper is to study the microwave interactions in polymer thick film resistors, namely, polyvinyl chloride (PVC)-graphite thick film resistors, and its applications in trimming of these resistors.
Design/methodology/approach
We applied microwave radiation in the form of pulses of various pulse durations and with different powers to polymer thick film resistors and observed the variation of resistance of these resistors with microwave radiation.
Findings
The paper finds that microwave radiation can be used for trimming of polymer thick film resistors.
Research limitations/implications
The research implication of this paper is that polymer thick film resistors can be trimmed practically using this method.
Practical implications
The practical implication of this paper is that we can trim the polymer thick film resistors, namely, PVC-graphite thick film resistor, by using this method.
Originality/value
The value of the paper is in showing that microwave radiation can be used to trim downwards in the case of high-value resistors and trim upwards in the case of low-value resistors.
Details
Keywords
IT has frequently been stated that mass production of airframes is impossible, but this is obviously far from correct when one considers that Germany is producing them in largo…
Abstract
IT has frequently been stated that mass production of airframes is impossible, but this is obviously far from correct when one considers that Germany is producing them in largo numbers. On the other hand, no one familiar with airframe production will suggest that the making of aircraft can yet be standardised to the same degree as the motor‐car body industry. The design of cars is relatively stabilised, in the main, although varying in detail. The evolution of airframes is likely to progress continuously at considerable speed for some years. It is also true that very little demand, in fact need, existed for special plant until 1936. Even at that time, Germany was already in full production, if not on mass production lines as understood in the car industry, at least semi‐mass production.
Abstract
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Fernando F. Padró, Karen Trimmer, Heejin Chang and Jonathan H. Green
The purpose of this study is to investigate the extent to which TQM has influenced the legal system in Australia, an area seldom investigated in the quality or legal literature.
Abstract
Purpose
The purpose of this study is to investigate the extent to which TQM has influenced the legal system in Australia, an area seldom investigated in the quality or legal literature.
Design/methodology/approach
Documentary and policy analysis of legislation, rules and rulemaking documentation based on a partial application of historical-policy analysis (HPA). Textual analysis was based on Dean and Bowen's (1994) definition of TQM and Vinni's (2007) review of new public management and Swiss (1992) “reformed TQM” concepts.
Findings
Australia's Tertiary Education Quality and Standards Agency Act of 2011 and supporting legal documents such as Guidance Notes include language reflective of TQM principles, providing evidence that present-day administrative law schemes include TQM practices and tools to undergird procedures of regulatory expectations (sometimes in the form of standards), monitoring and general operations. Oftentimes, it is the supporting legal documentation where TQM practices are found and operationalized.
Research limitations/implications
This is a proof-of-concept research study to determine the feasibility to identify TQM concepts within the existing language of legal statutes and supporting regulatory documentation. As such this study worked out the preliminary research challenges in performing this type of analysis.
Practical implications
Understanding TQM's impact on legal systems expands the system's perspective of organizations that do not always factor in the influence government policy has on organizational behaviours and outlooks. More specifically, understanding TQM's influence sheds insight on regulatory requirements imposed on a sector and the normative aspects of regulatory compliance that impact the operations and strategic planning of organizations.
Social implications
The article provides an example of how legal administrative rulemaking influences organizational operational and strategic activities to remain viable in the organization's business or industrial sector.
Originality/value
There are few research papers or literature reviews pertaining to the subject of TQM concepts embedded in laws and regulations, most of which date from the 1980s through early 2000s.
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Solder preforms from the Indium Corporation are now available in tape and reel for automatic pick and place equipment. Over 200 different alloys can be selected.
This paper provides a technical background and overview of the rôle played by the computer controlled laser trimming system in the thick film industry.
Bath Scientific Ltd of Melksham, Wiltshire, has launched a high speed version of its PrecisionProbe bare/loaded substrate tester. The new version is aimed at higher throughput…
Abstract
Bath Scientific Ltd of Melksham, Wiltshire, has launched a high speed version of its PrecisionProbe bare/loaded substrate tester. The new version is aimed at higher throughput manufacturers in Europe. To overcome the limitations of jigs and fixtures, the system uses moving probe technology under software control and is available as a single‐sided or concurrent double‐sided test system with up to four probes per surface (maximum eight in total).
Describes the MetaTorch sensor system which uses standard componentssuch as CCD cameras, laser diodes and electronic pre‐processinghardware to determine the location of objects…
Abstract
Describes the MetaTorch sensor system which uses standard components such as CCD cameras, laser diodes and electronic pre‐processing hardware to determine the location of objects and features with the help of the structured light principle. Examines the sensor system’s four main parts: the sensor head, the data acquisition board, the software and the interface to the robot or handling machine controller. The initial application was as an arc welding tracking system but has expanded to a variety of feature detection or feature following tasks including gluing, seam sealing and car seat trimming.
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A control member for aeroplanes comprises a universally mounted hand lever 1 carried by an arch or bridge‐shaped member 5, one extremity of which moves in a slot 4 in a stationary…
Abstract
A control member for aeroplanes comprises a universally mounted hand lever 1 carried by an arch or bridge‐shaped member 5, one extremity of which moves in a slot 4 in a stationary member 3, the other extremity being connected to a control rod 8, and a lateral extension 11 carrying a further control rod 12, the lever being capable of rotation on its axis and being connected by a second universal joint 13 to a flexible cable 14. Fig. 4 shows a dual control arrangement, fore‐and‐aft movement of the levers 1 operating bell cranks 8a connected to a link 8b. The latter is connected to a lever 8c operating the micro‐switches 8e of an electric motor 20, which moves the elevators through worm gearing 21, 22 and cables 32. Lateral movement of either lever 1 operates, through bell cranks 12a a link 12b, a second lever 12c controlling the micro‐switches of an electric motor 28 which controls the joint movement of the ailerons and rudder through cables 25, 29a. Trimming may be effected by rotating the hand lever 1 in a bearing 6 to effect relative movement of the levers 26, 29 to which the aileron and rubber cables 25, 29a are respectively connected. Hydraulic or pneumatic actuation may be employed instead of electric actuation.