GB1180224A - Improvements in and relating to Transducing Systems - Google Patents

Improvements in and relating to Transducing Systems

Info

Publication number
GB1180224A
GB1180224A GB1481966A GB1481966A GB1180224A GB 1180224 A GB1180224 A GB 1180224A GB 1481966 A GB1481966 A GB 1481966A GB 1481966 A GB1481966 A GB 1481966A GB 1180224 A GB1180224 A GB 1180224A
Authority
GB
United Kingdom
Prior art keywords
collector
signal
representing
compensation
transistor
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
GB1481966A
Inventor
Raymond William Penny
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.)
Rosemount Measurement Ltd
Original Assignee
KDG Instruments 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 KDG Instruments Ltd filed Critical KDG Instruments Ltd
Priority to GB1481966A priority Critical patent/GB1180224A/en
Publication of GB1180224A publication Critical patent/GB1180224A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0082—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means
    • G01L9/0085—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means using variations in inductance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/10—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in inductance, i.e. electric circuits therefor
    • G01L9/105—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in inductance, i.e. electric circuits therefor with temperature compensating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)

Abstract

1,180,224. Transistor circuit. K.D.G. INSTRUMENTS Ltd. 4 April, 1967 [4 April, 1966], No. 14819/66. Heading H3T. [Also in Division G1] A.C. signals from the split secondary 84, 85, Fig. 5, of a differential transformer 82, 89, 85 are applied to the bases of complementary transistors 95, 96, the signal at the junction of emitter resistors 105, 106, representing the sum of the signals, and that on the collector of 95 representing the difference. The sum signal is amplified in a compound pair of transistors 108, 109, and the output taken from the collector of 108. The collector load of transistor 108 includes a thermistor 114 for compensation of the sum signal for temperature variations of the transformer. Temperature compensation of the difference signal is obtained by feeding back a voltage from the junction of resistors 118, 119, representing that part of the collector 108 variation arising from the thermistor 114 compensation, amplifying the feedback voltage in a long-tailed pair 122, 124, and adding the output thereof to the difference signal on the collector of transistor 95.
GB1481966A 1966-04-04 1966-04-04 Improvements in and relating to Transducing Systems Expired GB1180224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1481966A GB1180224A (en) 1966-04-04 1966-04-04 Improvements in and relating to Transducing Systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1481966A GB1180224A (en) 1966-04-04 1966-04-04 Improvements in and relating to Transducing Systems

Publications (1)

Publication Number Publication Date
GB1180224A true GB1180224A (en) 1970-02-04

Family

ID=10048045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1481966A Expired GB1180224A (en) 1966-04-04 1966-04-04 Improvements in and relating to Transducing Systems

Country Status (1)

Country Link
GB (1) GB1180224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535049A1 (en) * 1982-10-25 1984-04-27 Peerless Nuclear Corp PRESSURE DETECTOR AND DIFFERENTIAL PRESSURE AND ASSOCIATED TRANSMITTER USED IN A HOSTILE ENVIRONMENT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535049A1 (en) * 1982-10-25 1984-04-27 Peerless Nuclear Corp PRESSURE DETECTOR AND DIFFERENTIAL PRESSURE AND ASSOCIATED TRANSMITTER USED IN A HOSTILE ENVIRONMENT

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