JPS58152012U - Overmodulation prevention circuit - Google Patents

Overmodulation prevention circuit

Info

Publication number
JPS58152012U
JPS58152012U JP4776082U JP4776082U JPS58152012U JP S58152012 U JPS58152012 U JP S58152012U JP 4776082 U JP4776082 U JP 4776082U JP 4776082 U JP4776082 U JP 4776082U JP S58152012 U JPS58152012 U JP S58152012U
Authority
JP
Japan
Prior art keywords
output voltage
prevention circuit
transmitter
detecting
overmodulation prevention
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
JP4776082U
Other languages
Japanese (ja)
Other versions
JPH021939Y2 (en
Inventor
亀山　義典
Original Assignee
八重洲無線株式会社
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 八重洲無線株式会社 filed Critical 八重洲無線株式会社
Priority to JP4776082U priority Critical patent/JPS58152012U/en
Publication of JPS58152012U publication Critical patent/JPS58152012U/en
Application granted granted Critical
Publication of JPH021939Y2 publication Critical patent/JPH021939Y2/ja
Granted legal-status Critical Current

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Landscapes

  • Amplitude Modulation (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図はＡＭ送信波の無変調時と１００％変調時の波形
例、第２図は本考案の実施回路例を示す。 １・・・変調器、２・・・変調信号制御段、３・・・減
衰器、１０・・・平均値検波回路、２０・・・尖頭値検
波回路。FIG. 1 shows an example of the waveform of an AM transmission wave when it is not modulated and when it is 100% modulated, and FIG. 2 shows an example of a circuit implementing the present invention. DESCRIPTION OF SYMBOLS 1... Modulator, 2... Modulation signal control stage, 3... Attenuator, 10... Average value detection circuit, 20... Peak value detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＡＭ送信機出力の一部を平均値検波した出力電圧と尖頭
値検波した出力電圧を比較して、尖頭値出力電圧が平均
値出力電圧のほぼ２倍を越える状態を検出して該送信機
の変調度を低減させるべくしたＡＭ送信機の過変調防止
回路。The output voltage obtained by detecting the average value of a part of the AM transmitter output and the output voltage obtained by detecting the peak value are compared, and a state in which the peak value output voltage exceeds approximately twice the average value output voltage is detected and transmitted. AM transmitter overmodulation prevention circuit designed to reduce the modulation degree of the AM transmitter.
JP4776082U 1982-04-01 1982-04-01 Overmodulation prevention circuit Granted JPS58152012U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4776082U JPS58152012U (en) 1982-04-01 1982-04-01 Overmodulation prevention circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4776082U JPS58152012U (en) 1982-04-01 1982-04-01 Overmodulation prevention circuit

Publications (2)

Publication Number Publication Date
JPS58152012U true JPS58152012U (en) 1983-10-12
JPH021939Y2 JPH021939Y2 (en) 1990-01-18

Family

ID=30058712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4776082U Granted JPS58152012U (en) 1982-04-01 1982-04-01 Overmodulation prevention circuit

Country Status (1)

Country Link
JP (1) JPS58152012U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113989A (en) * 1974-07-24 1976-02-03 Tokyo Printing Ink Mfg Co Ltd KAKUSHUDENKIBUTSUPINNI PURASUCHITSUKUSUHIFUKUO HODOKOSUHOHO
JPS54115012A (en) * 1978-02-24 1979-09-07 Rockwell International Corp Rf transmitter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113989A (en) * 1974-07-24 1976-02-03 Tokyo Printing Ink Mfg Co Ltd KAKUSHUDENKIBUTSUPINNI PURASUCHITSUKUSUHIFUKUO HODOKOSUHOHO
JPS54115012A (en) * 1978-02-24 1979-09-07 Rockwell International Corp Rf transmitter

Also Published As

Publication number Publication date
JPH021939Y2 (en) 1990-01-18

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