JPS6155254U - - Google Patents

Info

Publication number
JPS6155254U
JPS6155254U JP13950884U JP13950884U JPS6155254U JP S6155254 U JPS6155254 U JP S6155254U JP 13950884 U JP13950884 U JP 13950884U JP 13950884 U JP13950884 U JP 13950884U JP S6155254 U JPS6155254 U JP S6155254U
Authority
JP
Japan
Prior art keywords
section
recording amplifier
output signal
smoothing
comparison
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
JP13950884U
Other languages
Japanese (ja)
Other versions
JPH0416286Y2 (en
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 filed Critical
Priority to JP1984139508U priority Critical patent/JPH0416286Y2/ja
Publication of JPS6155254U publication Critical patent/JPS6155254U/ja
Application granted granted Critical
Publication of JPH0416286Y2 publication Critical patent/JPH0416286Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す回路図、及
び第２図は従来のＡＬＣ回路付録音増幅器を示す
回路ブロツク図である。 主な図番の説明、７…録音増幅器、９…ＡＬＣ
回路、１２…比較部、１６…平滑回路、１９…リ
ツプルフイルタ、２２…短絡回路。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit block diagram showing a conventional recording amplifier with an ALC circuit. Explanation of main drawing numbers, 7...Recording amplifier, 9 ...ALC
Circuit, 12 ...Comparison section, 16 ...Smoothing circuit, 19 ...Ripple filter, 22 ...Short circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＡＬＣ回路を備える録音増幅器において、該録
音増幅器の出力信号レベルを検出する比較部と、
該比較部の出力信号を整流平滑する平滑部と、該
平滑部の出力信号に応じて前記録音増幅器の入力
信号を減衰する減衰部と、前記比較部の動作を停
止する為の停止部とから成り、電源投入後一定期
間前記停止部を作動させ、前記比較部の動作を停
止させることにより、前記平滑部のコンデンサが
録音バイアス回路により充電されるのを防止した
ことを特徴とする録音増幅器。 In a recording amplifier equipped with an ALC circuit, a comparison unit detecting an output signal level of the recording amplifier;
A smoothing section that rectifies and smoothes the output signal of the comparison section, an attenuation section that attenuates the input signal of the recording amplifier according to the output signal of the smoothing section, and a stop section that stops the operation of the comparison section. A recording amplifier characterized in that the capacitor of the smoothing section is prevented from being charged by the recording bias circuit by operating the stopping section for a certain period of time after turning on the power and stopping the operation of the comparing section.
JP1984139508U 1984-09-14 1984-09-14 Expired JPH0416286Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984139508U JPH0416286Y2 (en) 1984-09-14 1984-09-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984139508U JPH0416286Y2 (en) 1984-09-14 1984-09-14

Publications (2)

Publication Number Publication Date
JPS6155254U true JPS6155254U (en) 1986-04-14
JPH0416286Y2 JPH0416286Y2 (en) 1992-04-13

Family

ID=30697885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984139508U Expired JPH0416286Y2 (en) 1984-09-14 1984-09-14

Country Status (1)

Country Link
JP (1) JPH0416286Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393208A (en) * 1986-10-07 1988-04-23 Rohm Co Ltd Automatic level control amplifier

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5515653U (en) * 1978-07-13 1980-01-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5515653U (en) * 1978-07-13 1980-01-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393208A (en) * 1986-10-07 1988-04-23 Rohm Co Ltd Automatic level control amplifier

Also Published As

Publication number Publication date
JPH0416286Y2 (en) 1992-04-13

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