JPS568908A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS568908A
JPS568908A JP8538879A JP8538879A JPS568908A JP S568908 A JPS568908 A JP S568908A JP 8538879 A JP8538879 A JP 8538879A JP 8538879 A JP8538879 A JP 8538879A JP S568908 A JPS568908 A JP S568908A
Authority
JP
Japan
Prior art keywords
transistor
supplied
trq9
rsp
speaker
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
JP8538879A
Other languages
Japanese (ja)
Other versions
JPS6224962B2 (en
Inventor
Yamato Okashin
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP8538879A priority Critical patent/JPS568908A/en
Publication of JPS568908A publication Critical patent/JPS568908A/en
Publication of JPS6224962B2 publication Critical patent/JPS6224962B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3081—Duplicated single-ended push-pull arrangements, i.e. bridge circuits

Abstract

PURPOSE:To facilitate IC-implementation by connecting one transistor that connects with an artificial load in parallel to another output transistor and then by providing negative feedback from the transistor to the prior stage. CONSTITUTION:An aural signal, once supplied to transistor (TR) Q1, is amplified successively by TRQ1-Q10 and then supplied to resistor R0. In this case, since the collectors of TRQ9, Q10 are connected direct to the base of TRQ2, 100% negative feedback is considered to be provided, so that the gain of the amplifier viewed from resistor R0 will be once. However, since TRQ9n, Q10n are supplied with base currents (n) times those of TRQ9, Q10, and consequently gain A of the amplifier viewed from speaker Sp increases by A=(Rsp/R0)n times providing that the impedance of speaker Sp is Rsp.
JP8538879A 1979-07-04 1979-07-04 Amplifier Granted JPS568908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8538879A JPS568908A (en) 1979-07-04 1979-07-04 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8538879A JPS568908A (en) 1979-07-04 1979-07-04 Amplifier

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP26615886A Division JPS62115901A (en) 1986-11-08 1986-11-08 Amplifier

Publications (2)

Publication Number Publication Date
JPS568908A true JPS568908A (en) 1981-01-29
JPS6224962B2 JPS6224962B2 (en) 1987-06-01

Family

ID=13857357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8538879A Granted JPS568908A (en) 1979-07-04 1979-07-04 Amplifier

Country Status (1)

Country Link
JP (1) JPS568908A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61145907A (en) * 1984-12-19 1986-07-03 Rohm Co Ltd Negative feedback amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61145907A (en) * 1984-12-19 1986-07-03 Rohm Co Ltd Negative feedback amplifier

Also Published As

Publication number Publication date
JPS6224962B2 (en) 1987-06-01

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