JPS645767B2 - - Google Patents

Info

Publication number
JPS645767B2
JPS645767B2 JP8462081A JP8462081A JPS645767B2 JP S645767 B2 JPS645767 B2 JP S645767B2 JP 8462081 A JP8462081 A JP 8462081A JP 8462081 A JP8462081 A JP 8462081A JP S645767 B2 JPS645767 B2 JP S645767B2
Authority
JP
Japan
Prior art keywords
circuit
oscillation
amplitude
detected
transistor
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.)
Expired
Application number
JP8462081A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57199331A (en
Inventor
Masahei Akasu
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 JP8462081A priority Critical patent/JPS57199331A/ja
Publication of JPS57199331A publication Critical patent/JPS57199331A/ja
Publication of JPS645767B2 publication Critical patent/JPS645767B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/952—Proximity switches using a magnetic detector using inductive coils
    • H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
    • H03K17/9542—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator
    • H03K17/9547—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator with variable amplitude

Landscapes

  • Electronic Switches (AREA)
JP8462081A 1981-06-02 1981-06-02 Proximity switch circuit Granted JPS57199331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8462081A JPS57199331A (en) 1981-06-02 1981-06-02 Proximity switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8462081A JPS57199331A (en) 1981-06-02 1981-06-02 Proximity switch circuit

Publications (2)

Publication Number Publication Date
JPS57199331A JPS57199331A (en) 1982-12-07
JPS645767B2 true JPS645767B2 (en:Method) 1989-01-31

Family

ID=13835725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8462081A Granted JPS57199331A (en) 1981-06-02 1981-06-02 Proximity switch circuit

Country Status (1)

Country Link
JP (1) JPS57199331A (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9178361B2 (en) * 2012-09-27 2015-11-03 ConvenientPower, Ltd. Methods and systems for detecting foreign objects in a wireless charging system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588227A (en) * 1978-12-26 1980-07-03 Omron Tateisi Electronics Co Proximity switch

Also Published As

Publication number Publication date
JPS57199331A (en) 1982-12-07

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