JPS55138659A - Analog input unit - Google Patents

Analog input unit

Info

Publication number
JPS55138659A
JPS55138659A JP4603979A JP4603979A JPS55138659A JP S55138659 A JPS55138659 A JP S55138659A JP 4603979 A JP4603979 A JP 4603979A JP 4603979 A JP4603979 A JP 4603979A JP S55138659 A JPS55138659 A JP S55138659A
Authority
JP
Japan
Prior art keywords
input unit
analog input
timing controller
amplifier
converter
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
JP4603979A
Other languages
Japanese (ja)
Inventor
Takeshi Araki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4603979A priority Critical patent/JPS55138659A/en
Publication of JPS55138659A publication Critical patent/JPS55138659A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the high-speed analog input unit of high packaging density and superior input accuracy by eliminating the effect of spike noise upon a AC-DC converter and using the same for the analog input unit.
CONSTITUTION: Modulating switches 9, 10 are alternately turned ON and OFF by the read command from a timing controller 22 to input the output of a bridge circuit into a pulse transformer 3 and amplifier 12. Demodulating switches 13, 14 are turned ON by the timing control generated by a timing controller 22 only during 25% before and after the center of the flat part of the output of an amplifier 12. This signal is differentially amplified 19 and is subjected to A-D conversion by the A-D converter 23 in the timing controller 22.
COPYRIGHT: (C)1980,JPO&Japio
JP4603979A 1979-04-17 1979-04-17 Analog input unit Pending JPS55138659A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4603979A JPS55138659A (en) 1979-04-17 1979-04-17 Analog input unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4603979A JPS55138659A (en) 1979-04-17 1979-04-17 Analog input unit

Publications (1)

Publication Number Publication Date
JPS55138659A true JPS55138659A (en) 1980-10-29

Family

ID=12735883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4603979A Pending JPS55138659A (en) 1979-04-17 1979-04-17 Analog input unit

Country Status (1)

Country Link
JP (1) JPS55138659A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010203912A (en) * 2009-03-03 2010-09-16 Yamatake Corp State detection device
JP2017106931A (en) * 2011-04-01 2017-06-15 ローム株式会社 Temperature detection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010203912A (en) * 2009-03-03 2010-09-16 Yamatake Corp State detection device
JP2017106931A (en) * 2011-04-01 2017-06-15 ローム株式会社 Temperature detection device

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