GB1212920A - Digital-to-analogue converter - Google Patents

Digital-to-analogue converter

Info

Publication number
GB1212920A
GB1212920A GB6085968A GB6085968A GB1212920A GB 1212920 A GB1212920 A GB 1212920A GB 6085968 A GB6085968 A GB 6085968A GB 6085968 A GB6085968 A GB 6085968A GB 1212920 A GB1212920 A GB 1212920A
Authority
GB
United Kingdom
Prior art keywords
digital
input
decoder
dec
digit
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
GB6085968A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1212920A publication Critical patent/GB1212920A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/664—Non-linear conversion not otherwise provided for in subgroups of H03M1/66
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion
    • H03M1/80—Simultaneous conversion using weighted impedances
    • H03M1/808—Simultaneous conversion using weighted impedances using resistors

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

1,212,920. Digital/analogue converters. SIEMENS A.G. 20 Dec., 1968 [23 Dec.. 1967], No. 60859/68. Heading G4H. In a non-linear digital/analogue converter the output signal represents the product of two quantities derived from the input digits. In the embodiment of Fig. 3 the lower of two decimal digits is converted into a signal on one of 10 leads controlling transistor switches 5 in a decoder 8 so that a resistor is connected between a potential source and the input of an operational amplifier 1 in the feedback loop of which is a converter responsive to the second digit to transmit the feedback signal through an associated resistance. In a modification (Fig. 4, not shown) the decoder in the amplifier input comprises switches responsive to a code representing the decimal digit.
GB6085968A 1967-12-23 1968-12-20 Digital-to-analogue converter Expired GB1212920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1537436 1967-12-23

Publications (1)

Publication Number Publication Date
GB1212920A true GB1212920A (en) 1970-11-18

Family

ID=5675910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6085968A Expired GB1212920A (en) 1967-12-23 1968-12-20 Digital-to-analogue converter

Country Status (2)

Country Link
FR (1) FR1595154A (en)
GB (1) GB1212920A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020485A (en) * 1972-04-03 1977-04-26 Ampex Corporation Non-linear digital-to-analog converter for servo circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020485A (en) * 1972-04-03 1977-04-26 Ampex Corporation Non-linear digital-to-analog converter for servo circuit

Also Published As

Publication number Publication date
FR1595154A (en) 1970-06-08

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Legal Events

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