GB776516A - Static electrical code translating apparatus - Google Patents

Static electrical code translating apparatus

Info

Publication number
GB776516A
GB776516A GB2833255A GB2833255A GB776516A GB 776516 A GB776516 A GB 776516A GB 2833255 A GB2833255 A GB 2833255A GB 2833255 A GB2833255 A GB 2833255A GB 776516 A GB776516 A GB 776516A
Authority
GB
United Kingdom
Prior art keywords
potential
lead
current
rise
jumper
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
GB2833255A
Inventor
Maurice Charles Branch
Ronald Gerald Mills
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE551512D priority Critical patent/BE551512A/xx
Priority to NL92456D priority patent/NL92456C/xx
Priority claimed from GB803551A external-priority patent/GB695497A/en
Priority claimed from GB2273953A external-priority patent/GB780831A/en
Priority claimed from GB100554A external-priority patent/GB753357A/en
Priority claimed from GB953755A external-priority patent/GB769617A/en
Priority to GB2833255A priority patent/GB776516A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority claimed from US578823A external-priority patent/US2828365A/en
Priority to US612631A priority patent/US2883469A/en
Priority to FR71357D priority patent/FR71357E/en
Priority to FR71959D priority patent/FR71959E/en
Publication of GB776516A publication Critical patent/GB776516A/en
Priority claimed from GB37/75A external-priority patent/GB1488174A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/007—Sequential discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Rectifiers (AREA)

Abstract

776,516. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. Oct. 5, 1955, No. 28332/55. Addition to 753,357. Class 40 (4). In a code translating apparatus of the magnetic ring and threaded jumper wire type the operation of a device at one end of the wire enables the application of an operating potential to a device at the other end of the wire, so causing a small current to flow in the wire and subsequently a large increase in the current through the wire is produced to pulse the output winding of the magnetic ring. As shown, the jumper determining the code is connected between the anode of a gas valve such as T1 ... T3 and the cathode of a gas valve such as TO1 ... TO4 over a rectifier X1, the trigger electrodes (say of TO1 and T1) being primed in accordance with the code to be translated. When a start potential is applied to lead ST, VI conducts to cut off V2 which conducts again after 1¢ ms. determined by C1, R5. Conduction of V2 cuts off V3 which conducts again in a similar manner after 1¢ ms. When V2 cuts off the anode current of V4 rises steadily under control of circuit C3, R8 and the potential of lead A rises correspondingly. When V3 cuts off, power valve V5 draws heavy current to cause the potential of lead A to rise rapidly. When the potential of lead A (under the influence of V4) reaches the striking potential of TO1 the latter fires and the rise in cathode potential is applied to lead D where it operates on the grid of the cathode follower V7, the resulting rise in cathode potential causing the potential on lead C to rise, so maintaining the rectifier X1 back-biased. The rise in cathode potential of V7 is further communicated to lead B via cathode follower V6. When the potential of lead C reaches a sufficient value T1 strikes and its anode potential drops to cause X1 to conduct and a small current (limited by the anode resistor of V4) to pass through the jumper. Later, when the potential of lead A rises rapidly under the influence of V5 a large current passes through lead A and consequently through the jumper to produce the requisite output pulse. Shortly afterwards V5 and V4 cut off and the current in lead A and the jumper cease. The current in lead A is restricted by a limiter connector to the left-hand winding of transformer TR1. Since with this arrangement the potentials of leads D and C always rise and fall in a similar manner, spurious outputs due to the capacities of rectifiers X1 in other jumpers are avoided.
GB2833255A 1951-04-06 1955-10-05 Static electrical code translating apparatus Expired GB776516A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE551512D BE551512A (en) 1951-04-06
NL92456D NL92456C (en) 1955-10-05
GB2833255A GB776516A (en) 1951-04-06 1955-10-05 Static electrical code translating apparatus
US612631A US2883469A (en) 1955-10-05 1956-09-28 Static electrical code translating apparatus
FR71357D FR71357E (en) 1951-04-06 1956-10-05 Automatic switching system usable in automatic telephony
FR71959D FR71959E (en) 1951-04-06 1957-02-08 Automatic switching system usable in automatic telephony

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
GB803551A GB695497A (en) 1951-04-06 1951-04-06 Improvements in or relating to automatic telecommunication exchange system
GB2273953A GB780831A (en) 1953-08-18 1953-08-18 Improvements in or relating to electrical switches employing bi-directional transistors
GB100554A GB753357A (en) 1954-01-13 1954-01-13 Improvements in or relating to electric code translators
GB953755A GB769617A (en) 1955-04-01 1955-04-01 Improvements in or relating to electronic registering equipment
GB2833255A GB776516A (en) 1951-04-06 1955-10-05 Static electrical code translating apparatus
US578823A US2828365A (en) 1956-04-17 1956-04-17 Relayless line circuit
GB37/75A GB1488174A (en) 1974-01-10 1975-01-02 Electrical penetration assemblies

Publications (1)

Publication Number Publication Date
GB776516A true GB776516A (en) 1957-06-05

Family

ID=27562492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2833255A Expired GB776516A (en) 1951-04-06 1955-10-05 Static electrical code translating apparatus

Country Status (2)

Country Link
BE (1) BE551512A (en)
GB (1) GB776516A (en)

Also Published As

Publication number Publication date
BE551512A (en)

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