JPS55108923A - Equalizer circuit of tape recorder - Google Patents

Equalizer circuit of tape recorder

Info

Publication number
JPS55108923A
JPS55108923A JP1661479A JP1661479A JPS55108923A JP S55108923 A JPS55108923 A JP S55108923A JP 1661479 A JP1661479 A JP 1661479A JP 1661479 A JP1661479 A JP 1661479A JP S55108923 A JPS55108923 A JP S55108923A
Authority
JP
Japan
Prior art keywords
agc
transistor
rectification
equalizer circuit
circuit
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
JP1661479A
Other languages
Japanese (ja)
Inventor
Mitsuru Shiga
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1661479A priority Critical patent/JPS55108923A/en
Publication of JPS55108923A publication Critical patent/JPS55108923A/en
Pending legal-status Critical Current

Links

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  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE: To obtain an equalizer circuit where the output waveform in the AGC region is not clipped with a simple constitution, by controlling the transistor for AGC through the transistor for AGC rectification.
CONSTITUTION: The low-frequency signal from a microphone or a radio receiving circuit which is inputted from terminal a of an equalizer circuit is amplified by amplifying transistors TR1 and TR2 connected to coupling capacitors C1 and C2 and is not only outputted through coupling capacitor C3 but also applied to transistor TR5 for rectification. Therefore, transistor TR3 for AGC rectification is controlled through transistor TR5 and coupling capacitor C4, and the AGC control dependent upon transistors TR1 and TR2 which are subjected to feedback control is performed. Consequently, the output waveform in the AGC region is not clipped, and the buffer circuit, etc., for clip prevention are needless.
COPYRIGHT: (C)1980,JPO&Japio
JP1661479A 1979-02-14 1979-02-14 Equalizer circuit of tape recorder Pending JPS55108923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1661479A JPS55108923A (en) 1979-02-14 1979-02-14 Equalizer circuit of tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1661479A JPS55108923A (en) 1979-02-14 1979-02-14 Equalizer circuit of tape recorder

Publications (1)

Publication Number Publication Date
JPS55108923A true JPS55108923A (en) 1980-08-21

Family

ID=11921195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1661479A Pending JPS55108923A (en) 1979-02-14 1979-02-14 Equalizer circuit of tape recorder

Country Status (1)

Country Link
JP (1) JPS55108923A (en)

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