JPS5577216A - Shock sound preventive circuit - Google Patents

Shock sound preventive circuit

Info

Publication number
JPS5577216A
JPS5577216A JP15332378A JP15332378A JPS5577216A JP S5577216 A JPS5577216 A JP S5577216A JP 15332378 A JP15332378 A JP 15332378A JP 15332378 A JP15332378 A JP 15332378A JP S5577216 A JPS5577216 A JP S5577216A
Authority
JP
Japan
Prior art keywords
circuit
charging
capacitor
shock sound
fixed level
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
JP15332378A
Other languages
Japanese (ja)
Other versions
JPS5937604B2 (en
Inventor
Yasuaki Inoue
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP53153323A priority Critical patent/JPS5937604B2/en
Publication of JPS5577216A publication Critical patent/JPS5577216A/en
Publication of JPS5937604B2 publication Critical patent/JPS5937604B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H03G11/08—Limiting rate of change of amplitude

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To make it possible to prevent a shock sound effectively by charging a charging capacitor by a charging circuit to a fixed level with a fixed time constant and then by making a control circuit stop the charge on detecting it being charged to the fixed level. CONSTITUTION:Capacitor 12, one of constituent elements of LPF10 of an AGC loop including LPF10 and AGC signal generating circuit 14 connected its prior stage, is charged forcibly. Namely, putting a power supply to work let charging circuit 16 charge capacitor 12 to a fixed level with a fixed time constant and control circuit 19, when detecting capacitor 12 being charged to the fixed level, stops circuit 16 from charging. Then, circuit 16 in operation drives circuit 14 to prevent a shock sound effectively.
JP53153323A 1978-12-05 1978-12-05 Shock noise prevention circuit Expired JPS5937604B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53153323A JPS5937604B2 (en) 1978-12-05 1978-12-05 Shock noise prevention circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53153323A JPS5937604B2 (en) 1978-12-05 1978-12-05 Shock noise prevention circuit

Publications (2)

Publication Number Publication Date
JPS5577216A true JPS5577216A (en) 1980-06-10
JPS5937604B2 JPS5937604B2 (en) 1984-09-11

Family

ID=15559975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53153323A Expired JPS5937604B2 (en) 1978-12-05 1978-12-05 Shock noise prevention circuit

Country Status (1)

Country Link
JP (1) JPS5937604B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454716A (en) * 1990-06-25 1992-02-21 Nec Corp Agc circuit
JPH06244767A (en) * 1993-02-17 1994-09-02 Mitsubishi Electric Corp Automatic power amplifier control circuit
US7764119B2 (en) 2007-03-01 2010-07-27 Fujitsu Semiconductor Limited Voltage control circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497854A (en) * 1972-05-12 1974-01-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497854A (en) * 1972-05-12 1974-01-24

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454716A (en) * 1990-06-25 1992-02-21 Nec Corp Agc circuit
JPH06244767A (en) * 1993-02-17 1994-09-02 Mitsubishi Electric Corp Automatic power amplifier control circuit
US7764119B2 (en) 2007-03-01 2010-07-27 Fujitsu Semiconductor Limited Voltage control circuit
KR100983854B1 (en) * 2007-03-01 2010-09-28 후지쯔 세미컨덕터 가부시키가이샤 Voltage control circuit

Also Published As

Publication number Publication date
JPS5937604B2 (en) 1984-09-11

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