JPS5779729A - D-a converter - Google Patents

D-a converter

Info

Publication number
JPS5779729A
JPS5779729A JP55156334A JP15633480A JPS5779729A JP S5779729 A JPS5779729 A JP S5779729A JP 55156334 A JP55156334 A JP 55156334A JP 15633480 A JP15633480 A JP 15633480A JP S5779729 A JPS5779729 A JP S5779729A
Authority
JP
Japan
Prior art keywords
output
diode
smoothing
pulse
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
JP55156334A
Other languages
Japanese (ja)
Inventor
Kazumi Kawashima
Masaaki Fujita
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55156334A priority Critical patent/JPS5779729A/en
Publication of JPS5779729A publication Critical patent/JPS5779729A/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 eliminate an insensible region, by connecting a resistor and a diode in series with a collector of a transistor (TR) switched with a signal changed in duty ratio and by smoothing an output from a connecting point. CONSTITUTION:An input digital signal is applied to a pulse generating circuit 1 and converted to a pulse having duty ratio on the digital value. This pulse is applied to a transistor (TR)2 and an output is given from a connecting point between a resistor 3a and a diode 3b. When a TR3 turns on, since the output is a forward voltage to the diode 3b, a voltage between base and emitter of a TR9 can be canceled, where a signal smoothing this output with a smoothing circuit 8 is applied. Thus, an insensible region can be avoided.
JP55156334A 1980-11-05 1980-11-05 D-a converter Pending JPS5779729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55156334A JPS5779729A (en) 1980-11-05 1980-11-05 D-a converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55156334A JPS5779729A (en) 1980-11-05 1980-11-05 D-a converter

Publications (1)

Publication Number Publication Date
JPS5779729A true JPS5779729A (en) 1982-05-19

Family

ID=15625501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55156334A Pending JPS5779729A (en) 1980-11-05 1980-11-05 D-a converter

Country Status (1)

Country Link
JP (1) JPS5779729A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5190552A (en) * 1975-02-06 1976-08-09 d*a henkankairo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5190552A (en) * 1975-02-06 1976-08-09 d*a henkankairo

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