JPS558169A - Multi-step amplifier - Google Patents

Multi-step amplifier

Info

Publication number
JPS558169A
JPS558169A JP8154778A JP8154778A JPS558169A JP S558169 A JPS558169 A JP S558169A JP 8154778 A JP8154778 A JP 8154778A JP 8154778 A JP8154778 A JP 8154778A JP S558169 A JPS558169 A JP S558169A
Authority
JP
Japan
Prior art keywords
amplifier
charging
power source
time
source make
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
JP8154778A
Other languages
Japanese (ja)
Inventor
Hiroyasu Yamaguchi
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 JP8154778A priority Critical patent/JPS558169A/en
Publication of JPS558169A publication Critical patent/JPS558169A/en
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To eliminate the pop noise by accelerating the capacitor charging for the front-step amplifier at the power source make time and then charging the capacitor of the rear-step amplifier after discharging once with a constant charging time which is always slower than the charging time of the front-step amplifier.
CONSTITUTION: The high-speed charging circuit of the serial circuit of minor resistance R2 and diode D is connected to capacitor C3 of pre-amplifier A1 at the power source make time in order to obtain the steady state as soon as possible. On the other hand, switches S3 and S2 which are turned on at the power source make time are connected to capacitors C6 and C7 of main amplifier A2 at the rear step. And thus a constant charging time can by obtained bt charging C6 and C7 after charging them once. Accordingly, amplifier A2 always become steady slower than amplifier A1 at the power source make time, thus always avoiding the pop noise.
COPYRIGHT: (C)1980,JPO&Japio
JP8154778A 1978-07-05 1978-07-05 Multi-step amplifier Pending JPS558169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8154778A JPS558169A (en) 1978-07-05 1978-07-05 Multi-step amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8154778A JPS558169A (en) 1978-07-05 1978-07-05 Multi-step amplifier

Publications (1)

Publication Number Publication Date
JPS558169A true JPS558169A (en) 1980-01-21

Family

ID=13749308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8154778A Pending JPS558169A (en) 1978-07-05 1978-07-05 Multi-step amplifier

Country Status (1)

Country Link
JP (1) JPS558169A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997659A (en) * 1982-11-26 1984-06-05 日本メクトロン株式会社 Artificial tooth
JPS6116618U (en) * 1984-07-04 1986-01-30 松下電器産業株式会社 Vehicle audio equipment
JPS62281605A (en) * 1986-05-30 1987-12-07 Toshiba Corp Voice output amplifier circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997659A (en) * 1982-11-26 1984-06-05 日本メクトロン株式会社 Artificial tooth
JPS6116618U (en) * 1984-07-04 1986-01-30 松下電器産業株式会社 Vehicle audio equipment
JPS62281605A (en) * 1986-05-30 1987-12-07 Toshiba Corp Voice output amplifier circuit

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