NDLI: Transistor equivalent circuits

Content Provider	IEEE Xplore Digital Library
Author	Pritchard, R.L.
Copyright Year	1963
Abstract	This paper surveys the history of the electric-circuit representation of the transistor over the past fifty years. During the first two decades after the transistor was announced in 1948, primary emphasis was on small-signal equivalent circuits, which could be used for linear-circuit analysis and design. In addition, parameters of many of these equivalent circuits for the bipolar junction transistor, which are described, were related to the physical construction of the device. Approximately two-thirds of the paper is devoted to this period, when the writer personally contributed to this effort. By the beginning of the third decade, transistor circuits had became more complex, and circuit analysis was carried out with the help of digital computers. Interest then shifted away from small-signal equivalent circuits to "models" for computer-aided circuit design (CACD). This transition, including the models used in the widely used CACD program SPICE, is described. MOS transistors are treated only briefly; by the time MOS transistors became commercially viable devices, emphasis then also had shifted to "models" for CACD. In conclusion, the writer notes that there is still hope for us aficionados of small-signal equivalent circuits; new types of transistors are still being characterized in this manner.
Sponsorship	IEEE Publication
Starting Page	150
Ending Page	162
Page Count	13
File Size	210964
File Format	PDF
ISSN	00189219
Volume Number	86
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Equivalent circuits Electron tubes Voltage Circuit analysis computing Circuit synthesis MOSFETs Integrated circuit modeling History Bipolar transistor circuits SPICE
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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