GB776281A - Improvements in or relating to electronic equipment - Google Patents

Improvements in or relating to electronic equipment

Info

Publication number
GB776281A
GB776281A GB1556554A GB1556554A GB776281A GB 776281 A GB776281 A GB 776281A GB 1556554 A GB1556554 A GB 1556554A GB 1556554 A GB1556554 A GB 1556554A GB 776281 A GB776281 A GB 776281A
Authority
GB
United Kingdom
Prior art keywords
lever
current
output current
condensers
coil
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
GB1556554A
Inventor
James Richard Halsall
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1556554A priority Critical patent/GB776281A/en
Publication of GB776281A publication Critical patent/GB776281A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/02—Arrangements in which the value to be measured is automatically compared with a reference value
    • G01R17/06—Automatic balancing arrangements
    • G01R17/08—Automatic balancing arrangements in which a force or torque representing the measured value is balanced by a force or torque representing the reference value

Abstract

776,281. Electric measuring systems. IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 26, 1955 [May 26, 1954], No. 15565/54. Class 40 (1). [Also in Groups XXXV and XL (c)] A remote indication of the position of a lever 15 is obtained by coupling the lever 15 by a spring 14 to a lever 11 which differentially adjusts a pair of condensers C<SP>2</SP>A, C<SP>2</SP>B. The values of these condensers determine which one of two oscillators V<SP>1</SP>A, V<SP>1</SP>B is oscillating and which is not, so as to control (see Group XXXV) the current passed by either rectifier RECT (1) or RECT (2). This current is measured by a milli-ammeter 16 to provide the output indication. The output current is also passed through a coil 12 secured to the lever 11 so that in cooperation with a magnet 13 it tends to cancel the initial movement of the lever. The oscillator may be replaced by any one of those shown in Figs. 3 to 7 (not shown). In another embodiment, Fig. 9 (not shown), movement of the input lever adjusts the position of the core of a differential transformer thus varying the magnitude and phase-sense of the input signal to a phase-sensitive rectifier (see Group XXV) the output current of which is measured to give the required remote indication. The output current is fed back to a coil on the input lever as before.
GB1556554A 1954-05-26 1954-05-26 Improvements in or relating to electronic equipment Expired GB776281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1556554A GB776281A (en) 1954-05-26 1954-05-26 Improvements in or relating to electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1556554A GB776281A (en) 1954-05-26 1954-05-26 Improvements in or relating to electronic equipment

Publications (1)

Publication Number Publication Date
GB776281A true GB776281A (en) 1957-06-05

Family

ID=10061391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1556554A Expired GB776281A (en) 1954-05-26 1954-05-26 Improvements in or relating to electronic equipment

Country Status (1)

Country Link
GB (1) GB776281A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407480A1 (en) * 1977-10-31 1979-05-25 Siemens Ag COMPENSATION AMPLIFIER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407480A1 (en) * 1977-10-31 1979-05-25 Siemens Ag COMPENSATION AMPLIFIER

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