ZA739558B - Improvements in electronic equipment - Google Patents

Improvements in electronic equipment

Info

Publication number
ZA739558B
ZA739558B ZA739558A ZA739558A ZA739558B ZA 739558 B ZA739558 B ZA 739558B ZA 739558 A ZA739558 A ZA 739558A ZA 739558 A ZA739558 A ZA 739558A ZA 739558 B ZA739558 B ZA 739558B
Authority
ZA
South Africa
Prior art keywords
electronic equipment
electronic
equipment
Prior art date
Application number
ZA739558A
Inventor
E Moorey
Original Assignee
Western Industries Pty
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 Western Industries Pty filed Critical Western Industries Pty
Priority to ZA739558A priority Critical patent/ZA739558B/en
Priority to DE19742450159 priority patent/DE2450159A1/en
Publication of ZA739558B publication Critical patent/ZA739558B/en
Priority to FR7441506A priority patent/FR2255606A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/163—Detection devices
    • B61L1/165—Electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/167—Circuit details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Amplifiers (AREA)
ZA739558A 1973-12-19 1973-12-19 Improvements in electronic equipment ZA739558B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ZA739558A ZA739558B (en) 1973-12-19 1973-12-19 Improvements in electronic equipment
DE19742450159 DE2450159A1 (en) 1973-12-19 1974-10-22 DEVICE FOR MONITORING AN AC SIGNAL
FR7441506A FR2255606A1 (en) 1973-12-19 1974-12-17 AC signal monitor - has biased op. amp. for constant output signal low

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA739558A ZA739558B (en) 1973-12-19 1973-12-19 Improvements in electronic equipment

Publications (1)

Publication Number Publication Date
ZA739558B true ZA739558B (en) 1974-11-27

Family

ID=25567175

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA739558A ZA739558B (en) 1973-12-19 1973-12-19 Improvements in electronic equipment

Country Status (3)

Country Link
DE (1) DE2450159A1 (en)
FR (1) FR2255606A1 (en)
ZA (1) ZA739558B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL414742A1 (en) * 2015-11-10 2017-05-22 Voestaloine Signaling Sopot Spółka Z Ograniczoną Opdpowiedzialnością Method and the system for detecting the presence of the rail vehicle wheel

Also Published As

Publication number Publication date
FR2255606A1 (en) 1975-07-18
DE2450159A1 (en) 1975-07-03

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