JPS56120205A - Current output circuit - Google Patents

Current output circuit

Info

Publication number
JPS56120205A
JPS56120205A JP2356380A JP2356380A JPS56120205A JP S56120205 A JPS56120205 A JP S56120205A JP 2356380 A JP2356380 A JP 2356380A JP 2356380 A JP2356380 A JP 2356380A JP S56120205 A JPS56120205 A JP S56120205A
Authority
JP
Japan
Prior art keywords
output
current
input
reference voltage
transistor
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
JP2356380A
Other languages
Japanese (ja)
Other versions
JPS6211811B2 (en
Inventor
Hiroki Aizawa
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP2356380A priority Critical patent/JPS56120205A/en
Publication of JPS56120205A publication Critical patent/JPS56120205A/en
Publication of JPS6211811B2 publication Critical patent/JPS6211811B2/ja
Granted legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To enable to effectively output only Ac signal current to a load with high output impedance with a simple constitution, by supplying DC operating current to the input amplifying means and controlling the operating current with the difference between the DC voltage of output and the reference voltage.
CONSTITUTION: AC input signal Vi to an input amplifying means 1 is fed to the base of a N-P-N bipolar transistor Q1 being an active element. The reference voltage EB is given as the base bias of the transistor Q1, and DC operating current is fed from a current supply means 2. Further, the current supply means 2 is controlled by the output of a high gain differential amplifier 32, taking the collector output of the transistor Q1 as positive phase input via a low-pass filter 31 and the reference voltage ER as reverse phase input. Thus, AC current component only corresponding to the input signal vi is introduced from the output of the input amplifying means 1.
COPYRIGHT: (C)1981,JPO&Japio
JP2356380A 1980-02-27 1980-02-27 Current output circuit Granted JPS56120205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2356380A JPS56120205A (en) 1980-02-27 1980-02-27 Current output circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2356380A JPS56120205A (en) 1980-02-27 1980-02-27 Current output circuit

Publications (2)

Publication Number Publication Date
JPS56120205A true JPS56120205A (en) 1981-09-21
JPS6211811B2 JPS6211811B2 (en) 1987-03-14

Family

ID=12113982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2356380A Granted JPS56120205A (en) 1980-02-27 1980-02-27 Current output circuit

Country Status (1)

Country Link
JP (1) JPS56120205A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0419511U (en) * 1990-06-05 1992-02-19

Also Published As

Publication number Publication date
JPS6211811B2 (en) 1987-03-14

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