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JPS55132125A - Digital-to-analog converter - Google Patents

Digital-to-analog converter

Info

Publication number
JPS55132125A
JPS55132125A JP3944679A JP3944679A JPS55132125A JP S55132125 A JPS55132125 A JP S55132125A JP 3944679 A JP3944679 A JP 3944679A JP 3944679 A JP3944679 A JP 3944679A JP S55132125 A JPS55132125 A JP S55132125A
Authority
JP
Japan
Prior art keywords
digital
signal
input
photocoupler
digital signal
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.)
Pending
Application number
JP3944679A
Other languages
Japanese (ja)
Inventor
Mitsuo Asano
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3944679A priority Critical patent/JPS55132125A/en
Publication of JPS55132125A publication Critical patent/JPS55132125A/en
Pending 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
    • H03M1/82—Digital/analogue converters with intermediate conversion to time interval

Landscapes

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

Abstract

PURPOSE:To realize an insulation type miniature and inexpensive unit by equipping it with a digital/pulse converter (converting an input digital signal into a string of pulses with duty proportional to the input signal) and photocoupler. CONSTITUTION:Digital/pulse converter 6 and photocoupler 8 are provided. Digital signal input 1 is converted by converter 6 into a pluse signal with duty proportional to the digital value, and then insulated electrically from input digital signal 1 by photocoupler 8, and the insulated pulse signal is applied to the RC circuit of resistance 9 and capacitor 10, so that operational amplifier 11 will generate at output terminal 5 an analog output proportional to the digital value applied to digital signal input part 1.
JP3944679A 1979-03-30 1979-03-30 Digital-to-analog converter Pending JPS55132125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3944679A JPS55132125A (en) 1979-03-30 1979-03-30 Digital-to-analog converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3944679A JPS55132125A (en) 1979-03-30 1979-03-30 Digital-to-analog converter

Publications (1)

Publication Number Publication Date
JPS55132125A true JPS55132125A (en) 1980-10-14

Family

ID=12553239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3944679A Pending JPS55132125A (en) 1979-03-30 1979-03-30 Digital-to-analog converter

Country Status (1)

Country Link
JP (1) JPS55132125A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158539U (en) * 1982-04-19 1983-10-22 株式会社明電舎 Digital-analog signal converter
JPS58187021A (en) * 1982-04-27 1983-11-01 Ricoh Elemex Corp Digital-analog converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158539U (en) * 1982-04-19 1983-10-22 株式会社明電舎 Digital-analog signal converter
JPS58187021A (en) * 1982-04-27 1983-11-01 Ricoh Elemex Corp Digital-analog converter

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