EARLY TRANSISTOR HISTORY

AT GENERAL ELECTRIC

Dwight V. Jones

 

Oral History – Dwight Jones

(Continued)

 

We used this test equipment to evaluate the first alloy junction transistors, which were just in development.  The PNP types were the most reliable, while the NPNs were hard to manufacture.   

 

  

 

This is a section of Dwight Jones’ first patent, filed in 1954 and based on his work in the GE test engineering group as an assignment to evaluate the first alloy junction transistors.  According to Dwight, this equipment was rack mounted and used extensively to evaluate the new transistors being developed at the GE labs – these would have been the developmental type transistors which led to the commercial types such as 2N43, 2N44, 2N45, 2N78, 2N107 and 2N170.  According to the text of the patent: “  …it is an object of the present invention to provide new and improved means for determining the alpha cutoff frequency and the like for semiconductor devices.”

 

 

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Oral History – Dwight Jones

(Continued)

 

Can you provide a brief description of your articles, papers and publications?

 

When I retired in 1987, I was presented with a thick bound volume by the GE Corporate Research Lab, where I worked at the time, that was entitled “The Collected Publications of Dwight V. Jones”.  This is a fairly complete volume of my work.  There are dozens of articles, with the first in 1955 and the last in 1972.  Let me mention a few of them for you:

 

The first was in March, 1955.  It was entitled “Transistor Test Set” and appeared in Radio Electronics Engineering magazine.  This was based on my patent and work in the Test Engineering group. 

 

In the late 1950s, I became interested in how to use transistors in high fidelity audio circuits.  This became a specialty of mine for many years and I wrote quite a few articles on my designs and circuits.  Transistors were just starting to be used in HiFi and I did a lot of work in this field.   My job at GE during this time was that of Applications Engineer at SPD (Semiconductor Products Department) in Syracuse.   Much of the transistor audio work I did appeared in the series of GE Transistor Manuals, which were published in the 1950s and 1960s.  Each of us in the Applications Group were responsible for circuits in different sections of the Transistor Manuals, and I was the “HiFi guy”.

 

Go To Jones Oral History, Page 3

 

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