JPS5245981A - Effective value detecting circuit - Google Patents

Effective value detecting circuit

Info

Publication number
JPS5245981A
JPS5245981A JP12079275A JP12079275A JPS5245981A JP S5245981 A JPS5245981 A JP S5245981A JP 12079275 A JP12079275 A JP 12079275A JP 12079275 A JP12079275 A JP 12079275A JP S5245981 A JPS5245981 A JP S5245981A
Authority
JP
Japan
Prior art keywords
effective value
detecting circuit
value detecting
logarithmic
amplifer
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
JP12079275A
Other languages
Japanese (ja)
Other versions
JPS5632589B2 (en
Inventor
Masayuki Katakura
Hisashi Yamada
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 JP12079275A priority Critical patent/JPS5245981A/en
Publication of JPS5245981A publication Critical patent/JPS5245981A/en
Publication of JPS5632589B2 publication Critical patent/JPS5632589B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE: To provide an effective value detecting circuit, in which two NPN transistors are used as logarithmic elements of a logarithmic amplifer of dipolar type and are connected in series so as to make it possible to reduce increase in the offset voltage and deterioration of the frequency characteristics and to detect a stable effective value with high performance.
COPYRIGHT: (C)1977,JPO&Japio
JP12079275A 1975-10-08 1975-10-08 Effective value detecting circuit Granted JPS5245981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12079275A JPS5245981A (en) 1975-10-08 1975-10-08 Effective value detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12079275A JPS5245981A (en) 1975-10-08 1975-10-08 Effective value detecting circuit

Publications (2)

Publication Number Publication Date
JPS5245981A true JPS5245981A (en) 1977-04-12
JPS5632589B2 JPS5632589B2 (en) 1981-07-29

Family

ID=14795101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12079275A Granted JPS5245981A (en) 1975-10-08 1975-10-08 Effective value detecting circuit

Country Status (1)

Country Link
JP (1) JPS5245981A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143483U (en) * 1984-08-24 1986-03-22 株式会社 阪急百貨店 key holder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4510461Y1 (en) * 1969-04-04 1970-05-13
JPS49100571U (en) * 1972-12-20 1974-08-29
JPS50100573U (en) * 1974-06-13 1975-08-20

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4510461Y1 (en) * 1969-04-04 1970-05-13
JPS49100571U (en) * 1972-12-20 1974-08-29
JPS50100573U (en) * 1974-06-13 1975-08-20

Also Published As

Publication number Publication date
JPS5632589B2 (en) 1981-07-29

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