Jim Knapton

James H Knapton (? – ?)

From Tekscope V.3 No.4 July 1971:

James H. Knapton started his career with Tektronix in November, 1967 with design of the horizontal amplifier and calibrator in the 647, Tek's first solid state lab scope.

After a period of working with pulse generators and time mark generators, he tackled the chore of developing a replacement for the 575 Curve Tracer.

Jim contributed many of the fine features found in the 576, and recently added the 176 Pulsed High-Current Fixture.

Jim received his BSEE in June of '48 from the University of California at Berkeley.

Documents Authored by Jim Knapton

Document	Page	Class	Title	Author(s)	Year	Refers to
Tekscope 1969 V1 N1 Feb 1969.pdf	3	Article	A New Dimension in Curve Tracing	Jim Knapton • Jerrold Rogers	1969	576
Tekscope 1971 V3 N4 Jul 1971.pdf	7	Article	Pulsed-Collector High-Current Testing with the 176	Jim Knapton	1971	176

Products by Jim Knapton

Manufacturer	Model	Description	Designers	Introduced
Tektronix	647	50 MHz scope	Oz Svehaug • Oliver Dalton • Jim Knapton	1963
Tektronix	576	Curve tracer	Jim Knapton	1969
Tektronix	176	High-current test fixture	Jim Knapton	1970
Tektronix	577	Curve tracer	Jack Millay • Jim Knapton • Bob Herb • Bob Verrinder • Om Agrawal • Dave Rule • Gary Davis • Tom Saucy	1972

Patents by Jim Knapton

Page	Office	Number	Title	Inventors	Company	Filing date	Grant date
Patent US 3255419A	US	3255419A	Wide band amplifier circuit having current amplifier input stage and operational amplifier output stage	Jim Knapton • Oliver Dalton	Tektronix Inc	1963-06-18	1966-06-07
Patent US 3558930A	US	3558930A	Jitter-free triggering method and apparatus	Jim Knapton • Henry A Zimmerman	Tektronix Inc	1968-03-15	1971-01-26
Patent US 3534185A	US	3534185A	Control device	Jim Knapton • Sid Broughton • Joseph L Loeffler	Tektronix Inc	1968-10-25	1970-10-13
Patent US 3654489A	US	3654489A	Pulse generator for a variable load	Jim Knapton	Tektronix Inc	1970-07-28	1972-04-04