GB953360A - Improvements relating to electrical circuit arrangements - Google Patents

Improvements relating to electrical circuit arrangements

Info

Publication number
GB953360A
GB953360A GB779460A GB779460A GB953360A GB 953360 A GB953360 A GB 953360A GB 779460 A GB779460 A GB 779460A GB 779460 A GB779460 A GB 779460A GB 953360 A GB953360 A GB 953360A
Authority
GB
United Kingdom
Prior art keywords
voltage
gap
current
transistor
polarity
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
GB779460A
Inventor
David Wilden Birnstingl
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB779460A priority Critical patent/GB953360A/en
Priority to FR854508A priority patent/FR1282482A/en
Publication of GB953360A publication Critical patent/GB953360A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

953,360. Determining physical dimensions. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 24, 1961 [March 4, 1960], No. 7794/60. Heading G1N. [Also in Division G4] An input voltage V 1 corresponding to 1/k-x is converted to an output mean current I m through a meter M corresponding to x by the transistor circuit shown. The arrangement is such that with the polarity of the A.C. from a transformer TR as shown transistor T 5 is cut off, current will flow from transistor T 4 and through rectifier x 2 to the collector of T 1 so that C charges up to a reference voltage V 2 . T 5 now conducts and a constant current Ic flows through resistor R 2 , T 2 and meter M. The current ceases at the end of each half cycle due to reversal of the polarity of the A.C. and capacitor C is short circuited by T 3 and discharged. A mathematical proof is included in the Specification. One application of the invention is in conjunction with the electric gauging apparatus of Specification 904, 689, which relates to measuring the gap between two magnetic elements. The output voltage of such apparatus is in the form of a voltage proportional to the reciprocal of the gap and the present circuit can be used to convert such voltage to one proportional to the gap.
GB779460A 1960-03-04 1960-03-04 Improvements relating to electrical circuit arrangements Expired GB953360A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB779460A GB953360A (en) 1960-03-04 1960-03-04 Improvements relating to electrical circuit arrangements
FR854508A FR1282482A (en) 1960-03-04 1961-03-03 Improvements to transistor voltage converters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB779460A GB953360A (en) 1960-03-04 1960-03-04 Improvements relating to electrical circuit arrangements

Publications (1)

Publication Number Publication Date
GB953360A true GB953360A (en) 1964-03-25

Family

ID=9839867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB779460A Expired GB953360A (en) 1960-03-04 1960-03-04 Improvements relating to electrical circuit arrangements

Country Status (1)

Country Link
GB (1) GB953360A (en)

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