ZA792478B - Logic circuits - Google Patents

Logic circuits

Info

Publication number
ZA792478B
ZA792478B ZA792478A ZA792478A ZA792478B ZA 792478 B ZA792478 B ZA 792478B ZA 792478 A ZA792478 A ZA 792478A ZA 792478 A ZA792478 A ZA 792478A ZA 792478 B ZA792478 B ZA 792478B
Authority
ZA
South Africa
Prior art keywords
logic circuits
logic
circuits
Prior art date
Application number
ZA792478A
Inventor
A Cook
D Norton
Original Assignee
Westinghouse Brake & Signal
Signal 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 Westinghouse Brake & Signal, Signal Co Ltd filed Critical Westinghouse Brake & Signal
Publication of ZA792478B publication Critical patent/ZA792478B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
    • H03K5/26—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being duration, interval, position, frequency, or sequence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
    • B66B5/125—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack electrical

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
ZA792478A 1978-06-17 1979-05-22 Logic circuits ZA792478B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7827197A GB2027301B (en) 1978-06-17 1978-06-17 Detecting interruption of signals

Publications (1)

Publication Number Publication Date
ZA792478B true ZA792478B (en) 1980-06-25

Family

ID=10498015

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA792478A ZA792478B (en) 1978-06-17 1979-05-22 Logic circuits

Country Status (2)

Country Link
GB (1) GB2027301B (en)
ZA (1) ZA792478B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525230A1 (en) * 1991-07-30 1993-02-03 Anglo American Corporation of South Africa Limited Method of and apparatus for monitoring a winding rope
AU639816B2 (en) * 1991-07-31 1993-08-05 Anglo American Corporation Of South Africa Limited Method of and apparatus for monitoring a winding rope
CN113934134B (en) * 2021-11-02 2024-04-02 浙江大丰实业股份有限公司 Loose and messy rope safety control circuit and system

Also Published As

Publication number Publication date
GB2027301B (en) 1982-07-14
GB2027301A (en) 1980-02-13

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