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GB1397411A - Evaluation of the duty ratio of a curved-flank pulse- width -moculated wave form - Google Patents

Evaluation of the duty ratio of a curved-flank pulse- width -moculated wave form

Info

Publication number
GB1397411A
GB1397411A GB1590571A GB1590571A GB1397411A GB 1397411 A GB1397411 A GB 1397411A GB 1590571 A GB1590571 A GB 1590571A GB 1590571 A GB1590571 A GB 1590571A GB 1397411 A GB1397411 A GB 1397411A
Authority
GB
United Kingdom
Prior art keywords
duty ratio
ratio
width
moculated
evaluation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1590571A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GE Healthcare UK Ltd
Original Assignee
GE Healthcare UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GE Healthcare UK Ltd filed Critical GE Healthcare UK Ltd
Priority to GB1590571A priority Critical patent/GB1397411A/en
Publication of GB1397411A publication Critical patent/GB1397411A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/08—Demodulating pulses which have been modulated with a continuously-variable signal of duration- or width-mudulated pulses or of duty-cycle modulated pulses

Landscapes

  • Measuring Volume Flow (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1397411 Measuring pressure ratio electrically PLESSEY CO Ltd 18 July 1972 [19 May 1971] 15905/71 Heading G1N [Also in Division H4] Fluid-pressure pulses have a duty ratio proportional to the ratio of two pressures P1, P2, Fig. 1, in a fluidic apparatus as disclosed in Specification 1343404. Complementary electric pulse trains Pa, Pb are derived, Fig. 2, by Piezoelectric transducers PDI, PD2 from these fluid pulses, the pulse trains being subtracted to give a double amplitude train F o for transmission to the demodulator EC, (see Division H4), where the duty ratio, i.e. pulse width to cycle ratio, is converted to a proportional D.C. voltage.
GB1590571A 1971-05-19 1971-05-19 Evaluation of the duty ratio of a curved-flank pulse- width -moculated wave form Expired GB1397411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1590571A GB1397411A (en) 1971-05-19 1971-05-19 Evaluation of the duty ratio of a curved-flank pulse- width -moculated wave form

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1590571A GB1397411A (en) 1971-05-19 1971-05-19 Evaluation of the duty ratio of a curved-flank pulse- width -moculated wave form

Publications (1)

Publication Number Publication Date
GB1397411A true GB1397411A (en) 1975-06-11

Family

ID=10067669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1590571A Expired GB1397411A (en) 1971-05-19 1971-05-19 Evaluation of the duty ratio of a curved-flank pulse- width -moculated wave form

Country Status (1)

Country Link
GB (1) GB1397411A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498514A1 (en) * 1991-02-08 1992-08-12 Deutsche Thomson-Brandt Gmbh Process and apparatus to convert time into voltage
GB2377029A (en) * 1998-08-27 2002-12-31 Lucas Ind Plc Sensors and signal encoding

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498514A1 (en) * 1991-02-08 1992-08-12 Deutsche Thomson-Brandt Gmbh Process and apparatus to convert time into voltage
WO1992014303A1 (en) * 1991-02-08 1992-08-20 Deutsche Thomson-Brandt Gmbh Process and device for time/voltage conversion
TR25959A (en) * 1991-02-08 1993-11-01 Thomson Brandt Gmbh PROCEDURE AND ASSEMBLY FOR TIME / VOLTAGE CONVERSION
US5440307A (en) * 1991-02-08 1995-08-08 Deutsche Thomson-Brandt Gmbh Method and facility for time/voltage conversion
GB2377029A (en) * 1998-08-27 2002-12-31 Lucas Ind Plc Sensors and signal encoding
GB2377029B (en) * 1998-08-27 2003-03-19 Lucas Ind Plc Improvements relating to sensors

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee