GB910630A - Electronic proximity swtich - Google Patents

Electronic proximity swtich

Info

Publication number
GB910630A
GB910630A GB4093960A GB4093960A GB910630A GB 910630 A GB910630 A GB 910630A GB 4093960 A GB4093960 A GB 4093960A GB 4093960 A GB4093960 A GB 4093960A GB 910630 A GB910630 A GB 910630A
Authority
GB
United Kingdom
Prior art keywords
frequency
diode
conductive
circuit
swtich
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
GB4093960A
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.)
TAKUZO UEDA
Original Assignee
TAKUZO UEDA
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 TAKUZO UEDA filed Critical TAKUZO UEDA
Priority to GB4093960A priority Critical patent/GB910630A/en
Publication of GB910630A publication Critical patent/GB910630A/en
Expired 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
    • 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
    • H03K17/9545—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator with variable frequency

Landscapes

  • Electronic Switches (AREA)

Abstract

910,630. Transistor circuits. TATEISI, K., YAMAMOTO, M., ABE, A., and UEDA, T. Nov. 29, 1960, No. 40939/60. Class 40 (6). [Also in Group XXXVI] Apparatus for detecting the presence of conductive or magnetic bodies comprises an oscillator, the frequency of which changes when the coil 6 is brought near a conductive or magnetic body, the change in frequency being detected by the resonant circuit 14, 15 (tuned to the normal oscillator frequency) and a diode 20, the trigger circuit comprising transistors 17, 18 energizing relay 4 when the rectified output of diode 20 falls below its normal level. An amplifier may be interposed between transistor 18 and relay 4. The circuit should be operated from a stabilized power supply.
GB4093960A 1960-11-29 1960-11-29 Electronic proximity swtich Expired GB910630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4093960A GB910630A (en) 1960-11-29 1960-11-29 Electronic proximity swtich

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4093960A GB910630A (en) 1960-11-29 1960-11-29 Electronic proximity swtich

Publications (1)

Publication Number Publication Date
GB910630A true GB910630A (en) 1962-11-14

Family

ID=10417341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4093960A Expired GB910630A (en) 1960-11-29 1960-11-29 Electronic proximity swtich

Country Status (1)

Country Link
GB (1) GB910630A (en)

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