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JPS5789332A - Tone squelch circuit - Google Patents

Tone squelch circuit

Info

Publication number
JPS5789332A
JPS5789332A JP16478480A JP16478480A JPS5789332A JP S5789332 A JPS5789332 A JP S5789332A JP 16478480 A JP16478480 A JP 16478480A JP 16478480 A JP16478480 A JP 16478480A JP S5789332 A JPS5789332 A JP S5789332A
Authority
JP
Japan
Prior art keywords
output
pass filter
band pass
control circuit
gain control
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
JP16478480A
Other languages
Japanese (ja)
Inventor
Yuji Nishi
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP16478480A priority Critical patent/JPS5789332A/en
Publication of JPS5789332A publication Critical patent/JPS5789332A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/005Control by a pilot signal

Landscapes

  • Noise Elimination (AREA)

Abstract

PURPOSE:To make the operation high-speed and stable, by providing a gain control circuit, a band pass filter, a detecting circuit, and a switch circuit in series and by controlling the gain of the gain control circuit by the output of this filter. CONSTITUTION:A gain control circuit GC is provided in the input side of a band pass filter BPF, and the gain of the gain control circuit GC is controlled by the output obtained by rectifying and smoothing the output of the band pass filter BPF by a detecting circuit REC2. Thus, the output of the band pass filter BPF is always held in a constant level. However, it means a stationary level, and the delay of an automatic level control loop is utilized positively in the rise part to make the output large.
JP16478480A 1980-11-22 1980-11-22 Tone squelch circuit Pending JPS5789332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16478480A JPS5789332A (en) 1980-11-22 1980-11-22 Tone squelch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16478480A JPS5789332A (en) 1980-11-22 1980-11-22 Tone squelch circuit

Publications (1)

Publication Number Publication Date
JPS5789332A true JPS5789332A (en) 1982-06-03

Family

ID=15799877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16478480A Pending JPS5789332A (en) 1980-11-22 1980-11-22 Tone squelch circuit

Country Status (1)

Country Link
JP (1) JPS5789332A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650845A (en) * 1984-07-10 1987-03-17 Minnesota Mining And Manufacturing Company Ultra-violet light curable compositions for abrasion resistant articles
US7304465B2 (en) 2002-09-24 2007-12-04 Mitsumi Electric Co., Ltd. Power supply circuit capable of efficiently supplying a supply voltage
JP2009267545A (en) * 2008-04-22 2009-11-12 Icom Inc Tone signal detector, tone signal detection method, and program
JP2009267544A (en) * 2008-04-22 2009-11-12 Icom Inc Tone signal detector, tone signal detection method, and program
JP2015046725A (en) * 2013-08-27 2015-03-12 株式会社五洋電子 Tone squelch circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650845A (en) * 1984-07-10 1987-03-17 Minnesota Mining And Manufacturing Company Ultra-violet light curable compositions for abrasion resistant articles
US7304465B2 (en) 2002-09-24 2007-12-04 Mitsumi Electric Co., Ltd. Power supply circuit capable of efficiently supplying a supply voltage
JP2009267545A (en) * 2008-04-22 2009-11-12 Icom Inc Tone signal detector, tone signal detection method, and program
JP2009267544A (en) * 2008-04-22 2009-11-12 Icom Inc Tone signal detector, tone signal detection method, and program
JP2015046725A (en) * 2013-08-27 2015-03-12 株式会社五洋電子 Tone squelch circuit

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