Gene Andrews

Roland Eugene Andrews (b. 2 July 1931 – d. 22 December 2020) worked at Tektronix in Beaverton, Oregon from 1962 to 1998.

Gene Andrews, 1972

From Tekscope Vol.4 No.2, March 1972, p.5:

During his ten years at Tek, Gene has made many fine contributions to the product line. He began by working on the 10A2 amplifier, and was then responsible for the vertical amplifier design of the 453 Portable. He later was project engineer on the 647A/10A2A to bring this up to a 100-MHz instrument. When the 7000-Series was conceived he worked out the horizontal amplifier for the 7704 and designed the high-efficiency power supply for the unit; the first used in a TEKTRONIX laboratory oscilloscope.

Gene received his BSEE from Oregon State in 1954 and completed his M.S. at Stanford in 1956.

Documents Authored by Gene Andrews

Document Page Class Title Author(s) Year Refers to
Tekscope 1972 V4 N2 Mar 1972.pdf 2 Article A Nanosecond Portable Oscilloscope Gene Andrews 1972 485
Tekscope 1974 V6 N2.pdf 3 Article A 1000 cm/μs Storage Oscilloscope Gene Andrews 1974 7633

Products by Gene Andrews

Manufacturer Model Description Designers Introduced
Tektronix 10A2 50 MHz dual channel amplifier plugin Gene Andrews 1963
Tektronix 453 50 MHz portable dual-trace scope Oliver Dalton Gene Andrews 1965
Tektronix 7704 150 MHz non-storage mainframe Gene Andrews Bob Shand 1969
Tektronix 485 350 MHz portable scope John Addis Wink Gross Gene Andrews Glenn Bateman Ron Peltola Bob Firth Murlan Kaufman Bob White Keith Taylor Dick Troberg 1972
Tektronix 7633 100 MHz multi-mode storage mainframe Gene Andrews 1974
Tektronix 7104 1 GHz mainframe with MCP CRT Val Garuts Gene Andrews Hans Springer John Addis Wink Gross Art Metz Aris Silzars Conrad Odenthal Dave Morgan 1978
Tektronix R7103 1 GHz non-storage mainframe Val Garuts Gene Andrews Hans Springer John Addis Wink Gross Art Metz Aris Silzars Conrad Odenthal Dave Morgan 1985

Components by Gene Andrews

Model Class Description Designers Used in
155-0022-00 Monolithic integrated circuit analog multiplexer Gene Andrews 147 148 149 335 468 1430 1441 1461 1900 1910 2220 2221 2230 5223 5403 5440 5441 5443 5444 5A38 7313 7403N 7503 7504 7514 7603 AN/USM-281C 7613 7623 7623A 7633 7704 R7704 7704A 7834 7844 7854 R7912 7912AD 7912HB 7904 R7903 7904A 7934 7A12 7A18 7A18A 7A18N 7B52 7B53N 7D10 7D11 7D12 NT-7000 P7001
155-0067-02 Monolithic integrated circuit SMPS controller Joe Burger Gene Andrews 7704A 7834 7844 7854 7904 R7903 7904 7904A 7934 R7912 7912AD 7912HB 7934 7104 R7103 308 434 485 690 P7001

Patents by Gene Andrews

Page Office Number Title Inventors Company Filing date Grant date
Patent US 3281702A US 3281702A Wide band amplifier having variable gain Gene Andrews Tektronix Inc 1963-02-18 1966-10-25
Patent US 3421102A US 3421102A Direct coupled temperature compensated amplifier Gene Andrews Tektronix Inc 1965-06-10 1969-01-07
Patent US 3369173A US 3369173A Attenuator apparatus Gene Andrews Tektronix Inc 1965-11-19 1968-02-13
Patent US 3596165A US 3596165A Converter circuit having a controlled output Gene Andrews Tektronix Inc 1969-07-24 1971-07-27
Patent US 3795834A US 3795834A Oscilloscope having external trigger display mode Gene Andrews Robert Edward White Tektronix Inc 1972-07-05 1974-03-05
Patent US 3922585A US 3922585A Feedback amplifier circuit Gene Andrews Tektronix Inc 1974-01-17 1975-11-25
Patent US 4482861A US 4482861A Waveform measurement and display apparatus Lee J. Jalovec Gene Andrews Tektronix Inc 1982-06-14 1984-11-13
Patent US 4495586A US 4495586A Waveform acquisition apparatus and method Gene Andrews Tektronix Inc 1982-07-29 1985-01-22
Patent US 4527117A US 4527117A Signal processing system employing charge transfer devices Dave Morgan Gene Andrews Tektronix Inc 1982-10-18 1985-07-02
Patent US 4551636A US 4551636A Wide bandwidth signal coupling circuit having a variable voltage-level shift from input to output Gene Andrews John Addis Tektronix Inc 1983-05-25 1985-11-05
Patent US 5796308A US 5796308A Differential attenuator common mode rejection correction circuit Garry N. Link Gene Andrews Tektronix Inc 1996-06-28 1998-08-18
Patent US 6847199B2 US 6847199B2 Capturing both digital and analog forms of a signal through the same probing path Roy Kaufman Gene Andrews Colin L. Shepard William R. Mark Les Larson Donald F. Murray Tektronix Inc 2003-02-11 2005-01-25