GB1242593A - Electronic switching circuit - Google Patents

Electronic switching circuit

Info

Publication number
GB1242593A
GB1242593A GB5287268A GB5287268A GB1242593A GB 1242593 A GB1242593 A GB 1242593A GB 5287268 A GB5287268 A GB 5287268A GB 5287268 A GB5287268 A GB 5287268A GB 1242593 A GB1242593 A GB 1242593A
Authority
GB
United Kingdom
Prior art keywords
oscillatory
inductance
tooth
proximity detector
switching circuit
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
GB5287268A
Inventor
Guido Fiorentino
Alfredo Olivei
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.)
Olivetti SpA
Original Assignee
Olivetti SpA
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 Olivetti SpA filed Critical Olivetti SpA
Publication of GB1242593A publication Critical patent/GB1242593A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/061—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle pick-up devices without mechanical contacts
    • 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
    • H03K17/953—Proximity switches using a magnetic detector using inductive coils forming part of an oscillator
    • H03K17/9535—Proximity switches using a magnetic detector using inductive coils 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K2017/9706—Inductive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electronic Switches (AREA)
  • Sewing Machines And Sewing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1,242,593. Proximity detector circuits. ING. C. OLIVETTI &c. S.p. A. Nov.7, 1968 [Dec.4, 1967], No.52872/68. Heading G1N. In the proximity detector circuit shown in Fig.1, the transistor T assumes oscillatory and non- oscillatory states depending on the value of the inductance L, to produce, after smoothing by capacitor Cu, two well defined D.C. voltage levels at the output M. A further Zener diode K may be connected at M to provide a zero voltage output signal for the non-oscillatory state. The inductance L may comprise an air or ferromagnetic cored winding and may be varied by the approach of a tooth on a toothed wheel, the circuit ceasing to oscillate when a tooth is presented.
GB5287268A 1967-12-04 1968-11-07 Electronic switching circuit Expired GB1242593A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5397667 1967-12-04

Publications (1)

Publication Number Publication Date
GB1242593A true GB1242593A (en) 1971-08-11

Family

ID=11286211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5287268A Expired GB1242593A (en) 1967-12-04 1968-11-07 Electronic switching circuit

Country Status (3)

Country Link
DE (1) DE1812652C3 (en)
FR (1) FR1597622A (en)
GB (1) GB1242593A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156524A (en) * 1984-03-22 1985-10-09 Cambridge Electronic Ind Tachogenerators
GB2222257A (en) * 1988-07-19 1990-02-28 Glacier Metal Co Ltd Displacement sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156524A (en) * 1984-03-22 1985-10-09 Cambridge Electronic Ind Tachogenerators
GB2222257A (en) * 1988-07-19 1990-02-28 Glacier Metal Co Ltd Displacement sensor

Also Published As

Publication number Publication date
DE1812652A1 (en) 1969-08-28
DE1812652C3 (en) 1974-06-12
DE1812652B2 (en) 1973-10-25
FR1597622A (en) 1970-06-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee