JPS5552608A - Frequency modulation detector circuit - Google Patents

Frequency modulation detector circuit

Info

Publication number
JPS5552608A
JPS5552608A JP12633778A JP12633778A JPS5552608A JP S5552608 A JPS5552608 A JP S5552608A JP 12633778 A JP12633778 A JP 12633778A JP 12633778 A JP12633778 A JP 12633778A JP S5552608 A JPS5552608 A JP S5552608A
Authority
JP
Japan
Prior art keywords
signals
detector circuit
frequency
amplitude
terminal
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
JP12633778A
Other languages
Japanese (ja)
Inventor
Junichi Hikita
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.)
Rohm Co Ltd
Original Assignee
Rohm Co Ltd
Toyo Electronics Industry 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 Rohm Co Ltd, Toyo Electronics Industry Corp filed Critical Rohm Co Ltd
Priority to JP12633778A priority Critical patent/JPS5552608A/en
Publication of JPS5552608A publication Critical patent/JPS5552608A/en
Pending legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE: To realize a non-adjusting detector circuit in a simple constitution by elements which changes impedances according to the change of the frequency on a basis of the center frequency.
CONSTITUTION: Modulation signals applied to terminal A are signals having a fixed amplitude determined by the volage division ratio dependent upon resistances R1 and R2, and output signals m of peak detector circuit 2 have a fixed level. Ceramic filter 6 is an element which changes the impedance according to detuning from center frequency f0. Modulation signals applied to terminal B become signals having the amplitude value increased and reduced according to frequency shift, and output signals n of peak detector circuit 3 have the amplitude increased and reduced according to the frequency shift of modulation signals. Signals m and n are inputted to differential amplifier 4, and their difference signals are desired detection signals.
COPYRIGHT: (C)1980,JPO&Japio
JP12633778A 1978-10-13 1978-10-13 Frequency modulation detector circuit Pending JPS5552608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12633778A JPS5552608A (en) 1978-10-13 1978-10-13 Frequency modulation detector circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12633778A JPS5552608A (en) 1978-10-13 1978-10-13 Frequency modulation detector circuit

Publications (1)

Publication Number Publication Date
JPS5552608A true JPS5552608A (en) 1980-04-17

Family

ID=14932670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12633778A Pending JPS5552608A (en) 1978-10-13 1978-10-13 Frequency modulation detector circuit

Country Status (1)

Country Link
JP (1) JPS5552608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05129261A (en) * 1991-11-06 1993-05-25 M Setetsuku Kk Brush cleaning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05129261A (en) * 1991-11-06 1993-05-25 M Setetsuku Kk Brush cleaning device

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