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JPS5760716A - Connection system for variable capacity element - Google Patents

Connection system for variable capacity element

Info

Publication number
JPS5760716A
JPS5760716A JP13547280A JP13547280A JPS5760716A JP S5760716 A JPS5760716 A JP S5760716A JP 13547280 A JP13547280 A JP 13547280A JP 13547280 A JP13547280 A JP 13547280A JP S5760716 A JPS5760716 A JP S5760716A
Authority
JP
Japan
Prior art keywords
capacity
varicap diodes
variance
signal voltage
processing signal
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
JP13547280A
Other languages
Japanese (ja)
Inventor
Seiji Mori
Shoichi Minagawa
Takamasa Sakai
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.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co 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 Clarion Co Ltd filed Critical Clarion Co Ltd
Priority to JP13547280A priority Critical patent/JPS5760716A/en
Publication of JPS5760716A publication Critical patent/JPS5760716A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H5/00—One-port networks comprising only passive electrical elements as network components
    • H03H5/12—One-port networks comprising only passive electrical elements as network components with at least one voltage- or current-dependent element

Landscapes

  • Filters And Equalizers (AREA)

Abstract

PURPOSE:To prevent completely the variance of the capacity due to the influence of a signal voltage, by adopting a connection system where to varicap diodes are constituted in parallel with polarities opposite to each other for a processing signal voltage. CONSTITUTION:If DC blocking capacitors 7 and 8 are so selected that their reactance is small sufficiently for a processing signal frequency, processing signal voltages applied to varicap diodes IA and IB are equal to each other, and polarities of the variance of the capacity are opposite to each other because varicap diodes IA and IB are connected in directions opposite to each other. When the combined capacity of varicap diodes IA and IB and a control signal voltage are denoted as C0 and V0 respectively, equation C0=f(V0+ or -DELTAV)+f(V0 DELTAV)=f(V0) is true for the processing frequency. In respect to the function f(V), the capacity is changed linearly approximately for the applied voltage, and f(V)=alpha+beta is true. alpha and beta are constants, and varicap diodes which have such characteristics that capacities are changed linearly approximately for the applied voltage are used as IA and IB, thereby preventing the variance of the capacity due to the influence of the processing signal voltage.
JP13547280A 1980-09-29 1980-09-29 Connection system for variable capacity element Pending JPS5760716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13547280A JPS5760716A (en) 1980-09-29 1980-09-29 Connection system for variable capacity element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13547280A JPS5760716A (en) 1980-09-29 1980-09-29 Connection system for variable capacity element

Publications (1)

Publication Number Publication Date
JPS5760716A true JPS5760716A (en) 1982-04-12

Family

ID=15152507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13547280A Pending JPS5760716A (en) 1980-09-29 1980-09-29 Connection system for variable capacity element

Country Status (1)

Country Link
JP (1) JPS5760716A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61199308A (en) * 1985-02-28 1986-09-03 Shimadzu Corp dynamic filter
JPS6280421U (en) * 1985-11-08 1987-05-22
JPH0292749A (en) * 1988-09-29 1990-04-03 Denki Gijutsu Kaihatsu Kk Energizing device to prevent contact wire from icing, frost and snow
JP2007147419A (en) * 2005-11-28 2007-06-14 Hioki Ee Corp Variable capacitance circuit, voltage measuring device and power measuring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61199308A (en) * 1985-02-28 1986-09-03 Shimadzu Corp dynamic filter
JPS6280421U (en) * 1985-11-08 1987-05-22
JPH0292749A (en) * 1988-09-29 1990-04-03 Denki Gijutsu Kaihatsu Kk Energizing device to prevent contact wire from icing, frost and snow
JP2007147419A (en) * 2005-11-28 2007-06-14 Hioki Ee Corp Variable capacitance circuit, voltage measuring device and power measuring device

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