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George Frye: Difference between revisions
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Their group was in a building on Barnes road. Later, they moved to the second floor of [[Building 50]] on the Tektronix Campus. | Their group was in a building on Barnes road. Later, they moved to the second floor of [[Building 50]] on the Tektronix Campus. | ||
George's first assignment at Tek was to build a | George's first assignment at Tek was to build a high speed | ||
(around 100 MHz) square wave waveform generator for internal purposes. | |||
It didn't go into production. | |||
After Norm Winningstad left Tektronix in the mid-1960s, George Frye's manager was [[Al Zimmerman]]. | After Norm Winningstad left Tektronix in the mid-1960s, | ||
George Frye's manager was [[Al Zimmerman]]. | |||
Frye is listed as "Project Engineer, Electrical" on the [[4S2A]] sampling plug-in for the [[661]]. | Frye is listed as "Project Engineer, Electrical" on the [[4S2A]] sampling plug-in for the [[661]]. | ||
In the late 1960s, he was involved with the development of the [[S-1]] and [[S-2]] sampling heads. | In the late 1960s, he was involved ("head man") with the development of the [[S-1]] and [[S-2]] sampling heads. | ||
The sampling technology used in those was similar to previous instruments, just | The sampling technology used in those sampling heads was similar to previous instruments, just modularized. | ||
In terms of making high speed sampling heads, | In terms of making high speed sampling heads, | ||
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He decided to leverage the very short turn-off time of Tek's Schottky diodes. | He decided to leverage the very short turn-off time of Tek's Schottky diodes. | ||
This led to the invention of the traveling wave sampling gate, [[Patent US 3629731A|US patent number 3629731]]. | This led to the invention of the traveling wave sampling gate, [[Patent US 3629731A|US patent number 3629731]]. | ||
In this new sampling gate design, the aperture time is not a function of the length of the sampling strobe pulse. | In this new sampling gate design, | ||
the aperture time is not a function of the length of the sampling strobe pulse. | |||
Only the falling edge matters. Another way of viewing this is that conventional sampling heads depended on the | Only the falling edge matters. Another way of viewing this is that conventional sampling heads depended on the | ||
sampling pulse having a high second derivative, whereas the new design only required a high first derivative. | sampling pulse having a high second derivative, whereas the new design only required a high first derivative. | ||
This led to a significantly faster sampling head. | This led to a significantly faster sampling head. | ||
The first product using this new sampling gate design was the [[S-4]], which has a rise time of 25 picoseconds. | The first product using this new sampling gate design was the [[S-4]], | ||
which has a rise time of 25 picoseconds. | |||
George Frye left Tektronix in 1972. He formed Frye Electronics in 1973. | George Frye left Tektronix in 1972. He formed Frye Electronics in 1973. | ||
Frye Electronics produces instruments for measuring the performance of hearing aids. | Frye Electronics produces instruments for measuring the performance of hearing aids. | ||
As of | As of May 2023, George is still actively involved with Frye Electronics. | ||
===Selected publications=== | ===Selected publications=== | ||