Title:
【発明の名称】安定正弦波発生器
Document Type and Number:
Japanese Patent JPH071849
Kind Code:
B2
Abstract:
A sine wave generator which utilizes a PROM for storing a predetermined bit pattern which is converted to a corresponding pulse waveform generated in response to a very accurate and stable clock pulse. The pulse waveform is shifted to a very exacting voltage level and is filtered by a band-pass filter to derive the desired fundamental frequency sine wave. The amplitude and frequency stable sine wave may be utilized in linear variable differential transformer (LVDT) apparatus for measuring the position of a controlled object such as a turbine valve. The arrangement may also be utilized for generating additional sine waves bearing some predetermined phase relationship with respect to one another for other control or signal processing applications.
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Inventors:
Luis Genaro Ottobull
Andras Imre Zabo
Uyu Si Young
Andras Imre Zabo
Uyu Si Young
Application Number:
JP12290284A
Publication Date:
January 11, 1995
Filing Date:
June 13, 1984
Export Citation:
Assignee:
Westinghouse Electric Collection
International Classes:
G01D5/22; H03B28/00; G06F1/03; G06J1/00; (IPC1-7): H03B28/00
Domestic Patent References:
| JP55159625A | ||||
| JP5637709A | ||||
| JP56160108A |
Attorney, Agent or Firm:
Koichiro Kato
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