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US Patent: 3,546,570
Method for Driving Controlled Currents Through the Stator Windings of a Position Measuring Transformer
Patentee:
Thomas B. Bullock (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI

USPTO Classifications:
318/660, 318/661

Tool Categories:
electrical devices : transformers

Assignees:
Giddings & Lewis Machine Tool Co. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 19, 1968
Granted: Dec. 08, 1970

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
Description:
Abstract:

A pair of high gain amplifiers, each with negative current feedback, are used individually to drive a pair of stator windings of a position measuring transformer, sold under the trademark "Inductosyn," in response to a pair of voltages respectively representing the sine and cosine functions of a physical variable.

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