JPS5263626A - Photoelectric reader - Google Patents

Photoelectric reader

Info

Publication number
JPS5263626A
JPS5263626A JP50139582A JP13958275A JPS5263626A JP S5263626 A JPS5263626 A JP S5263626A JP 50139582 A JP50139582 A JP 50139582A JP 13958275 A JP13958275 A JP 13958275A JP S5263626 A JPS5263626 A JP S5263626A
Authority
JP
Japan
Prior art keywords
photoelectric reader
voltage
output
photoelectric
reader
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.)
Granted
Application number
JP50139582A
Other languages
Japanese (ja)
Other versions
JPS5412371B2 (en
Inventor
Takatomo Izume
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 JP50139582A priority Critical patent/JPS5263626A/en
Publication of JPS5263626A publication Critical patent/JPS5263626A/en
Publication of JPS5412371B2 publication Critical patent/JPS5412371B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: A voltage V0 proportionate to photoreception current of photodiode is compared with standard voltage V and in the case where V0> V, a portion of output is returned by positive feedback so as to obtain stable output which is independent from external conditions.
COPYRIGHT: (C)1977,JPO&Japio
JP50139582A 1975-11-20 1975-11-20 Photoelectric reader Granted JPS5263626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50139582A JPS5263626A (en) 1975-11-20 1975-11-20 Photoelectric reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50139582A JPS5263626A (en) 1975-11-20 1975-11-20 Photoelectric reader

Publications (2)

Publication Number Publication Date
JPS5263626A true JPS5263626A (en) 1977-05-26
JPS5412371B2 JPS5412371B2 (en) 1979-05-22

Family

ID=15248606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50139582A Granted JPS5263626A (en) 1975-11-20 1975-11-20 Photoelectric reader

Country Status (1)

Country Link
JP (1) JPS5263626A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934009A (en) * 1972-07-26 1974-03-29
JPS4949383A (en) * 1972-06-15 1974-05-13

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4949383A (en) * 1972-06-15 1974-05-13
JPS4934009A (en) * 1972-07-26 1974-03-29

Also Published As

Publication number Publication date
JPS5412371B2 (en) 1979-05-22

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