JPS55132110A - Power amplifying circuit - Google Patents

Power amplifying circuit

Info

Publication number
JPS55132110A
JPS55132110A JP3863179A JP3863179A JPS55132110A JP S55132110 A JPS55132110 A JP S55132110A JP 3863179 A JP3863179 A JP 3863179A JP 3863179 A JP3863179 A JP 3863179A JP S55132110 A JPS55132110 A JP S55132110A
Authority
JP
Japan
Prior art keywords
current
circuit
amplifying circuit
trq7
trq1
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
JP3863179A
Other languages
Japanese (ja)
Other versions
JPS6212690B2 (en
Inventor
Hiromi Kusakabe
Masahide Nanun
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 JP3863179A priority Critical patent/JPS55132110A/en
Priority to GB8009728A priority patent/GB2050098B/en
Priority to US06/134,303 priority patent/US4366448A/en
Priority to FR8007166A priority patent/FR2453539A1/en
Priority to DE3012439A priority patent/DE3012439C2/en
Publication of JPS55132110A publication Critical patent/JPS55132110A/en
Publication of JPS6212690B2 publication Critical patent/JPS6212690B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback

Abstract

PURPOSE:To stabilize and secure operation even at a low power voltage by providing an arithmetic feedback circuit which outputs a current bearing a fixed relation to the oerating current of PP-connected transistors and then keeps this current constant. CONSTITUTION:The output of signal source 11 is supplied to output circuit 16 composed of PP-connected ransistors TRQ7 and TRQ8 via pre-amplifying circuit 13 and driving circuit 14. Then, the operating crrent of TRQ7 is detected by TRQ9 and arithmetic feeback circuit 18 composed of TRQ11 and Q12 generates current IF, bearing the relation of IFproportional (I1.I2)<1/2> to operating currents I1 and I2, of TRQ1 and Q2, which is fed back to amplifying circuit 13 to keep current IF constant. Thus, the operation can be stabilized and secured even at a low power voltage. Additionally, idle currents of TRQ1 and Q2 can easily be set.
JP3863179A 1979-03-31 1979-03-31 Power amplifying circuit Granted JPS55132110A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP3863179A JPS55132110A (en) 1979-03-31 1979-03-31 Power amplifying circuit
GB8009728A GB2050098B (en) 1979-03-31 1980-03-21 Power-amplifying circuit
US06/134,303 US4366448A (en) 1979-03-31 1980-03-26 Power-amplifying circuit
FR8007166A FR2453539A1 (en) 1979-03-31 1980-03-31 POWER AMPLIFIER CIRCUIT
DE3012439A DE3012439C2 (en) 1979-03-31 1980-03-31 Power amplifier arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3863179A JPS55132110A (en) 1979-03-31 1979-03-31 Power amplifying circuit

Publications (2)

Publication Number Publication Date
JPS55132110A true JPS55132110A (en) 1980-10-14
JPS6212690B2 JPS6212690B2 (en) 1987-03-20

Family

ID=12530579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3863179A Granted JPS55132110A (en) 1979-03-31 1979-03-31 Power amplifying circuit

Country Status (1)

Country Link
JP (1) JPS55132110A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229908A (en) * 1983-05-27 1984-12-24 Rohm Co Ltd Current inverting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229908A (en) * 1983-05-27 1984-12-24 Rohm Co Ltd Current inverting circuit
JPH0526363B2 (en) * 1983-05-27 1993-04-15 Rohm Kk

Also Published As

Publication number Publication date
JPS6212690B2 (en) 1987-03-20

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