JPS56102105A - Dc coupling circuit - Google Patents

Dc coupling circuit

Info

Publication number
JPS56102105A
JPS56102105A JP435280A JP435280A JPS56102105A JP S56102105 A JPS56102105 A JP S56102105A JP 435280 A JP435280 A JP 435280A JP 435280 A JP435280 A JP 435280A JP S56102105 A JPS56102105 A JP S56102105A
Authority
JP
Japan
Prior art keywords
circuit
coupling circuit
current
ics
construct
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
JP435280A
Other languages
Japanese (ja)
Inventor
Shizuo Inohara
Yuichi Shiotani
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 JP435280A priority Critical patent/JPS56102105A/en
Publication of JPS56102105A publication Critical patent/JPS56102105A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To make it easier to construct a DC coupling circuit with ICs and to obtain a required DC level, by setting a DC operating point optionally in the DC coupling circuit and by arranging so that the DC variation at the first half step will not appear at the second half step.
CONSTITUTION: The output of differential amplifier 17 is transmitted to current Miller circuit 33 composed of transistors (TR)28∼30 and resistances 31 and 32. TR29 is grounded through constant-current circuit 36 composed of TR34 and resisttance 35. Since terminal 37 is in a DC float condition by coinciding currents flowing through TR29 and TR34 accurately, the bias voltage generated in the emitter of TR38 becomes the input DC current of amplifying circuit 18 under the same condition through terminal 37 and resistance 39. By setting a DC operating point optionally in the DC coupling circuit and by making arrangement so that the DC variation of amplifier 17 will not appear in amplifying circuit 18, it can be made easily to construct a DC coupling circuit with ICs and to obtain a required DC level.
COPYRIGHT: (C)1981,JPO&Japio
JP435280A 1980-01-17 1980-01-17 Dc coupling circuit Pending JPS56102105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP435280A JPS56102105A (en) 1980-01-17 1980-01-17 Dc coupling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP435280A JPS56102105A (en) 1980-01-17 1980-01-17 Dc coupling circuit

Publications (1)

Publication Number Publication Date
JPS56102105A true JPS56102105A (en) 1981-08-15

Family

ID=11582015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP435280A Pending JPS56102105A (en) 1980-01-17 1980-01-17 Dc coupling circuit

Country Status (1)

Country Link
JP (1) JPS56102105A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107224A (en) * 1987-10-30 1992-04-21 North American Philips Corporation Wideband single-ended voltage-to-current converter and gain-control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107224A (en) * 1987-10-30 1992-04-21 North American Philips Corporation Wideband single-ended voltage-to-current converter and gain-control circuit

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