JPS5717207A - Amplifying circuit - Google Patents

Amplifying circuit

Info

Publication number
JPS5717207A
JPS5717207A JP9129180A JP9129180A JPS5717207A JP S5717207 A JPS5717207 A JP S5717207A JP 9129180 A JP9129180 A JP 9129180A JP 9129180 A JP9129180 A JP 9129180A JP S5717207 A JPS5717207 A JP S5717207A
Authority
JP
Japan
Prior art keywords
voltage
constant
constant current
current value
circuit
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
JP9129180A
Other languages
Japanese (ja)
Other versions
JPS6313570B2 (en
Inventor
Kenji Yokoyama
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP9129180A priority Critical patent/JPS5717207A/en
Publication of JPS5717207A publication Critical patent/JPS5717207A/en
Publication of JPS6313570B2 publication Critical patent/JPS6313570B2/ja
Granted legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To increase the gain of the 1st stage and to stabilize it, by setting the current value of a constant current circuit as a load for the 1st stage based on a bias voltage applied between the bases of an output stage amplifier element.
CONSTITUTION: Drains of N-FET21a, P-FET21b are connected respectively to positive and negative power supply terminals 25a, 25b via constant current circuits 24a, 24b and the current value of the constant current circuits 24a, 24b is set based on a terminal voltage across a resistor 28 for bias stabilizatin, through a current value set circuit 32. When a signal applied to an input terminal 22 is zero, the voltage across the resistor 28 is as Vb=Idl.Rb, and a voltage between both the terminals of the constant current circuit 24a is as VDC=Idl.R1+VBE=R1/Rb.Vb+ VBE, and since the voltage VD is almost constant, the voltage VDC is about constant.
COPYRIGHT: (C)1982,JPO&Japio
JP9129180A 1980-07-04 1980-07-04 Amplifying circuit Granted JPS5717207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9129180A JPS5717207A (en) 1980-07-04 1980-07-04 Amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9129180A JPS5717207A (en) 1980-07-04 1980-07-04 Amplifying circuit

Publications (2)

Publication Number Publication Date
JPS5717207A true JPS5717207A (en) 1982-01-28
JPS6313570B2 JPS6313570B2 (en) 1988-03-26

Family

ID=14022357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9129180A Granted JPS5717207A (en) 1980-07-04 1980-07-04 Amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5717207A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113807A (en) * 1984-06-29 1986-01-22 Pioneer Electronic Corp Push-pull amplifier circuit
JPH0536108U (en) * 1991-10-17 1993-05-18 エスエムシー株式会社 Cylinder with built-in air absorber
JPH06232651A (en) * 1993-01-29 1994-08-19 Akai Electric Co Ltd Current-voltage conversion circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113807A (en) * 1984-06-29 1986-01-22 Pioneer Electronic Corp Push-pull amplifier circuit
JPH0536108U (en) * 1991-10-17 1993-05-18 エスエムシー株式会社 Cylinder with built-in air absorber
JPH06232651A (en) * 1993-01-29 1994-08-19 Akai Electric Co Ltd Current-voltage conversion circuit

Also Published As

Publication number Publication date
JPS6313570B2 (en) 1988-03-26

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