JPS55117316A - Frequency discriminating circuit - Google Patents

Frequency discriminating circuit

Info

Publication number
JPS55117316A
JPS55117316A JP2470479A JP2470479A JPS55117316A JP S55117316 A JPS55117316 A JP S55117316A JP 2470479 A JP2470479 A JP 2470479A JP 2470479 A JP2470479 A JP 2470479A JP S55117316 A JPS55117316 A JP S55117316A
Authority
JP
Japan
Prior art keywords
amplifier
circuit
input signal
constitution
supposed
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
JP2470479A
Other languages
Japanese (ja)
Inventor
Ihei Sugimoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2470479A priority Critical patent/JPS55117316A/en
Publication of JPS55117316A publication Critical patent/JPS55117316A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations

Abstract

PURPOSE:To simplify the circuit constitution by securing combination between the IC-formed differential voltage comparating circuit and the phase shifting circuit and thus securing the peculair function for the voltage comparative circuit. CONSTITUTION:Input signal source 1 is connected to the reverse input terminal and nonreverse input terminal each of differential voltage comparison amplifier 9 via resistances 6 and 7. Here amplifier 9 turns into the reverse amplifier featuring the amplification factor of 1 when switching transistor 12 is on. In that case it is supposed that resistance 6 and 8 are equal to each other. On the other hand, amplifier 9 turns into the nonreverse amplifier of amplification factor 1 in case transistor 12 is off. Now it is supposed that the input signal features the rectangular wave along with delay time defined to t for resistance 10 and capacitor 11 which form the phase shifter. Thus the outpt of amplifier 9 generates the pulse of duration t at the time points of rise and fall of the input signal. This output pulse is then integrated to secure the function as the frequency discriminator. In this way, a discriminator can be obtained with the simplified constitution if the circuit.
JP2470479A 1979-03-02 1979-03-02 Frequency discriminating circuit Pending JPS55117316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2470479A JPS55117316A (en) 1979-03-02 1979-03-02 Frequency discriminating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2470479A JPS55117316A (en) 1979-03-02 1979-03-02 Frequency discriminating circuit

Publications (1)

Publication Number Publication Date
JPS55117316A true JPS55117316A (en) 1980-09-09

Family

ID=12145560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2470479A Pending JPS55117316A (en) 1979-03-02 1979-03-02 Frequency discriminating circuit

Country Status (1)

Country Link
JP (1) JPS55117316A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009040181A (en) * 2007-08-08 2009-02-26 Mitsubishi Motors Corp Vehicular deflector mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009040181A (en) * 2007-08-08 2009-02-26 Mitsubishi Motors Corp Vehicular deflector mechanism

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