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JPS57208711A - Power amplifier having one set inverted output - Google Patents

Power amplifier having one set inverted output

Info

Publication number
JPS57208711A
JPS57208711A JP56093845A JP9384581A JPS57208711A JP S57208711 A JPS57208711 A JP S57208711A JP 56093845 A JP56093845 A JP 56093845A JP 9384581 A JP9384581 A JP 9384581A JP S57208711 A JPS57208711 A JP S57208711A
Authority
JP
Japan
Prior art keywords
amplifying section
stage
output
opposite
signal
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
JP56093845A
Other languages
Japanese (ja)
Inventor
Masayasu Tanimoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56093845A priority Critical patent/JPS57208711A/en
Publication of JPS57208711A publication Critical patent/JPS57208711A/en
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To amplify a large power with a simple constitution, by using a differential output of a one set differential amplifier for voltage amplification as a driving source for two sets of power amplifiers.
CONSTITUTION: A signal from a signal source 20 is amplified with a 1st stage voltage amplifying section 9 of a push-pull differential system. This signal is given to a voltage amplifying section 10 of the 2nd stage. The phase of the collector between a PNP transistor (TR)13 and an NPN TR14 is opposite to that between a PNP TR15 and an NPN TR16. An output stage amplifying section 11 and an output stage power amplifying section 12 connected to each collector are opposite with each other and operated at the same time. Thus, signals outputted at output terminals 17 and 18 are appeared in the opposite phase. When a load is connected between the output terminals 17 and 18, the BTL connection is obtained and a large power can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP56093845A 1981-06-19 1981-06-19 Power amplifier having one set inverted output Pending JPS57208711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56093845A JPS57208711A (en) 1981-06-19 1981-06-19 Power amplifier having one set inverted output

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56093845A JPS57208711A (en) 1981-06-19 1981-06-19 Power amplifier having one set inverted output

Publications (1)

Publication Number Publication Date
JPS57208711A true JPS57208711A (en) 1982-12-21

Family

ID=14093734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56093845A Pending JPS57208711A (en) 1981-06-19 1981-06-19 Power amplifier having one set inverted output

Country Status (1)

Country Link
JP (1) JPS57208711A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913930A2 (en) * 1997-10-31 1999-05-06 Sanyo Electric Co., Ltd. BTL amplifying circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5468142A (en) * 1977-11-11 1979-06-01 Hitachi Ltd Btl amplifying circuit
JPS5469367A (en) * 1977-11-14 1979-06-04 Nec Corp Balanced output differencial amplifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5468142A (en) * 1977-11-11 1979-06-01 Hitachi Ltd Btl amplifying circuit
JPS5469367A (en) * 1977-11-14 1979-06-04 Nec Corp Balanced output differencial amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913930A2 (en) * 1997-10-31 1999-05-06 Sanyo Electric Co., Ltd. BTL amplifying circuit
EP0913930A3 (en) * 1997-10-31 2002-03-20 Sanyo Electric Co., Ltd. BTL amplifying circuit

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