Artifact Details

Description

Describes a circuit to provide controlled current shutdown of sound systems for television and audio equipment under thermal overload and an active filter amplifier patent proposal. Also includes a loose set of hand drawn schematics of VCO and tint controls dated 1975-01-01.

Date

1974-03-06-1974-08-21

Author

Bray, Derek

Biographical Notes

Derek Bray earned a B.Sc. in physics from Manchester University in England (1955) and an M.S.E.E. from Santa Clara University (1968). He worked at Motorola and National before joining Fairchild where he served as manager of the consumer applications department in the late 1960s. He joined semi-custom array manufacturer Interdesign Inc. in Sunnyvale, California, in 1976 where he worked for founder and analog pioneer Hans Camenzind as vice president for engineering. He founded Advanced Analog Arrays, Inc. in Los Altos, California, in 1987.

Publisher

Fairchild Semiconductor

Identifying Numbers

Document number

74-1527

Extent

3 dated entries over 5 pages.

Dimensions

12 x 10 inches

Patents

The author is named as inventor on 16 U.S patents, including 2 patents assigned to Fairchild:

U.S. patent 4068139, “IC compatible variable shunt impedance for Dolby B system.” Filed 1967-08-09. Issued 1978-01-10.

U.S. patent 3378790, “Readily integrable color oscillator circuit.” Filed 1966-11-07. Issued 1968-04-16.

Category

Notebooks

Collection Title

Fairchild Semiconductor notebooks and technical papers

Publications

In addition to application notes and magazine articles on analog ICs, the author contributed to the following professional publication during his service at Fairchild:

Bray, D. and Froess, P. A black and white and color TV video I-F output transistor. IEEE Transactions on Broadcast and Television Receivers, vol. 11, iss. 3 (1965): 59–65.

Credit

Gift of Texas Instruments Incorporated

Lot Number

X6464.2012