It turned
out to be quite popular and about a year later the Power Transistor
Handbook project was initiated. At this time I was a Section Manager and I
wisely enlisted help from other engineers such as Bill Roehr. I formed a
small group who came up with the contents. I did some of the writing but
mostly I was the Technical Editor, and of course, Alan and crew got to do
some final editing to make sure our sentence structures were correct and
made sure we didn’t stray from the subject matter.
Please provide
highlights of the other semiconductor groups at Motorola and the different
types of devices you worked with over the years.
After the
move to 52nd Street improvements continued in small signal and
power transistors and soon to follow was a complete line of rectifiers and
Zener diodes. When GE developed thyristors we were soon to follow. The
final major germanium device was the high frequency Mesa that initially
sold for $150 per device,
The first
silicon transistors were developed in the early 60’s by Jack Haenichen and
others. These were all small signal. We were considerably behind the market
in introducing Silicon power and when we did these were mainly high
frequency triple diffused ones. These did not work well in audio circuits
or regulators as they tended to break into oscillation and had poor “Safe
Area”.
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To Greenburg Oral History, Page 9
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