JPS5457854A - Fm modulator - Google Patents

Fm modulator

Info

Publication number
JPS5457854A
JPS5457854A JP12428377A JP12428377A JPS5457854A JP S5457854 A JPS5457854 A JP S5457854A JP 12428377 A JP12428377 A JP 12428377A JP 12428377 A JP12428377 A JP 12428377A JP S5457854 A JPS5457854 A JP S5457854A
Authority
JP
Japan
Prior art keywords
voltage
increases
modulation signal
current
relation
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
JP12428377A
Other languages
Japanese (ja)
Inventor
Noriyuki Yamashita
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP12428377A priority Critical patent/JPS5457854A/en
Publication of JPS5457854A publication Critical patent/JPS5457854A/en
Pending legal-status Critical Current

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  • Amplitude Modulation (AREA)

Abstract

PURPOSE: To make the relation, between a modulation signal voltage and modulated frequency, close to a straight line, by providing a correction circuit which increases a voltage-current conversion gain within the range larger than a nearly center value of the variable range of a voltage.
CONSTITUTION: As modulation signal voltage (em) increases, the base potential of transistor 15 increases gradually and its collector potential also increases lineraly, but correction circuit 27 composed of a series circuit of Zener diode 25 and resistance 26 causes a current to flow when the collector voltage exceeds the Zener voltage, so that the relation between current (In) of the modulation signal and frequency (f) of the FM-modulated signal will approximate to a straight line
COPYRIGHT: (C)1979,JPO&Japio
JP12428377A 1977-10-17 1977-10-17 Fm modulator Pending JPS5457854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12428377A JPS5457854A (en) 1977-10-17 1977-10-17 Fm modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12428377A JPS5457854A (en) 1977-10-17 1977-10-17 Fm modulator

Publications (1)

Publication Number Publication Date
JPS5457854A true JPS5457854A (en) 1979-05-10

Family

ID=14881496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12428377A Pending JPS5457854A (en) 1977-10-17 1977-10-17 Fm modulator

Country Status (1)

Country Link
JP (1) JPS5457854A (en)

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