GB1435124A - Electric circuits - Google Patents

Electric circuits

Info

Publication number
GB1435124A
GB1435124A GB1167473A GB1167473A GB1435124A GB 1435124 A GB1435124 A GB 1435124A GB 1167473 A GB1167473 A GB 1167473A GB 1167473 A GB1167473 A GB 1167473A GB 1435124 A GB1435124 A GB 1435124A
Authority
GB
United Kingdom
Prior art keywords
amplifier
voltage
input
output
single conductor
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
GB1167473A
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB1167473A priority Critical patent/GB1435124A/en
Publication of GB1435124A publication Critical patent/GB1435124A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G08C15/06—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
    • G08C15/08—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division the signals being represented by amplitude of current or voltage in transmission link

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

1435124 Signal transmission circuit FERRANTI Ltd 21 Feb 1974 [10 March 1973] 11674/73 Heading G1N An electric circuit for transmitting information representative of the values of two physical quantities over a single conductor X includes a potentiometer RV 1 of which the wiper is positioned in accordance with the value of the first physical quantity to provide a D.C. voltage representing it, a high-input impedance unity gain amplifier A1 to the input of which the D.C. voltage is applied; a variable resistance RV2 representing the magnitude of the other quantity and connected between the amplifier output and the single conductor X, and a decoder including a further amplifier A2 to the input of which the single conductor is connected, a constant current source CS connected through a first switch S1 to the input of the further amplifier, a second amplifier A3 connected through capacitor C to the output of the further amplifier A2 and a second switch S2 operable to ground the input of the second amplifier. When S 1 is open and S2 is closed, the voltage from RV1 is transferred via Al and A2 to output terminal T 1 while the voltage at T2 is zero. With S1 closed and S2 open i 1 flows from CS through X and RV2 producing volt drop i 1 RV2 across it. The output of A2 drops correspondingly as does the voltage across C which drop is provided at terminal T2. A second embodiment Fig. 2 (not shown) provides for three physical quantities.
GB1167473A 1973-03-10 1973-03-10 Electric circuits Expired GB1435124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1167473A GB1435124A (en) 1973-03-10 1973-03-10 Electric circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1167473A GB1435124A (en) 1973-03-10 1973-03-10 Electric circuits

Publications (1)

Publication Number Publication Date
GB1435124A true GB1435124A (en) 1976-05-12

Family

ID=9990606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1167473A Expired GB1435124A (en) 1973-03-10 1973-03-10 Electric circuits

Country Status (1)

Country Link
GB (1) GB1435124A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165272A (en) * 1990-06-23 1992-11-24 Robert Bosch Gmbh Device for reducing noise during potentiometer evaluation
US5684407A (en) * 1991-01-29 1997-11-04 Cts Corporation Electronic circuit packaged with a position sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165272A (en) * 1990-06-23 1992-11-24 Robert Bosch Gmbh Device for reducing noise during potentiometer evaluation
US5684407A (en) * 1991-01-29 1997-11-04 Cts Corporation Electronic circuit packaged with a position sensor

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Legal Events

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